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Frequently Asked Questions

Tensitron Product FAQ

Tensitron manufactures precision tension meters since 1935.

Our instruments accurately measure tension in cables, wires, ropes, straps, bands, webs, filaments, yarns, fibers, films, tapes, and more — not soil moisture devices. Trusted in aviation, manufacturing, and industrial applications worldwide, Tensitron meters deliver repeatable, NIST-traceable results that improve safety, quality, and process control.

Mechanical vs. Digital Tension Meters

Tensitron manufactures both mechanical and digital tension meters. The best choice depends on your application, required accuracy, documentation needs, and working environment.

Feature Mechanical Digital
Typical Models ACM ACX, CX, STX-Plus, BTX, TX, WX, LX
Display Analog dial Digital LCD display
Power No batteries required Rechargeable battery
Accuracy Typically ±4–8% FS Typically ±1–2% FS
Multiple Calibrations No Yes
Data Output None Optional analog or RS-232 output on supported models
Best For Simple field verification Production, QA, maintenance, and documentation
Industries Aircraft maintenance and field service Aviation, manufacturing, wire, cable, web, strapping, fiber, textiles, and utilities

A tension meter, also called a tensiometer, is a precision handheld instrument that measures pulling force in flexible materials such as cables, wires, ropes, straps, filaments, yarns, and webs. Tensitron offers reliable mechanical and digital models for these materials, helping manufacturers and maintenance teams ensure safety and quality since 1935. View all Tensitron models

Tensitron tension meters primarily work using the three-roller deflection principle. The material passes over three rollers; the center roller deflects it slightly, and the instrument converts the measured force into an accurate tension reading. Specialized models for straps, webs, and fine filaments use adapted sensors. This provides quick, non-destructive measurements. See how Tensitron meters work

To use a Tensitron tension meter, select the correct calibration for your material, position the material in the rollers or sensing area, engage the instrument, and read the tension value. Most models allow simple one-handed operation. Take multiple readings and average them for best accuracy.

View ACX Cable Meter | View STX Strap Meter

 Accuracy varies by model and is generally expressed as a percentage of full scale (FS). For example, the TX-1 is rated at ±1% FS, while many other Tensitron digital meters are rated at ±2% FS. The correct meter depends on the material, tension range, and required accuracy. Get the Tension Fundamentals Guide to learn more.

Tensitron recommends annual factory calibration for optimal accuracy and safety. The service includes mechanical inspection, software updates, NIST-traceable recalibration, and replacement of worn parts. Basic field checks are possible with known weights. Provide material samples for custom calibrations.

Learn about Tensitron calibration services

Choose a Tensitron tension meter based on your material type, size, tension range, and usage needs. For aircraft cables use ACX/ACM; for heavy wire rope use CX; for straps use STX; for fine filaments use TX. Contact Tensitron with your material samples for expert recommendations and custom calibration. Browse all products

Tensitron meters measure tension in cables, wires, ropes, straps, bands, webs, filaments, yarns, fibers, films, tapes, and more. This includes aircraft cables, poly/metal strapping, nylon tie-downs, fine wires, textile fibers, fence wire, and saw blades. Custom calibrations are available for your specific material.

View STX for straps | View TX for filaments

ACX / ACM

Aircraft cables
1/16″–1/4″+
Up to 1,200+ lb

CX

Heavy cable & wire rope
1/16″–3/4″
Up to 2,000+ lb

STX

Straps & webs
Up to 4″ wide
1–2,000 lb

TX

Fine wire & filament
Ultra-fine diameters
Grams to several kg

Need a different range? Contact Tensitron for the correct model and custom calibration.

Tensitron mechanical models (e.g., ACM) are rugged, battery-free analog instruments ideal for basic field use. Digital models (e.g., ACX, CX, STX, TX) provide direct readings, data storage, multiple calibrations, higher accuracy, and export options — better for frequent use and documentation.
Proper tension measurement with a Tensitron meter prevents breakage, slack, vibration, or damage across materials. It ensures safety in aircraft cables, load security with straps, production quality with filaments and fibers, and overall reliability in manufacturing and structural applications.

What is the Tensitron STX-Plus?

The STX-Plus is Tensitron’s next-generation digital strap tension meter, built to measure the tension in strapping and other stationary banding materials so you can confirm loads are secured correctly. It is a smart, connected, handheld instrument designed for one-handed operation, with a multi-screen color display and built-in data storage. It builds directly on the proven STX-1 platform, adding faster operation, Wi-Fi data transfer, and USB-C charging.
Tensitron STX Plus digital strap tension meter for accurate strap tension measurement
It measures the static (stationary) tension in straps, bands, twine, wire, and similar materials, the holding force that keeps a load tight. Readings are taken on materials that are not moving, making it ideal for verifying strap tension on finished pallets and shipments or checking band saw blade tension before cutting. It is purpose-built for quick, accurate static tension verification on the production floor and during routine inspections.
Yes. Tensitron has manufactured precision tension measurement instruments in the USA since 1935, and the STX-Plus is a Made-in-USA instrument backed by that heritage. The same experienced technicians who build the instruments also calibrate and service them in-house.
The STX-Plus is used across packaging, shipping, warehousing, agriculture, and general industrial operations. Common uses include verifying strap tension on truck, rail, and warehouse shipments, checking pallet and carton strapping to prevent crushed or loose loads, confirming baling twine and wire tension in agricultural packaging, and checking band saw blade tension to protect cutting accuracy and blade life. Companies such as American Woodmark and Kingspan use Tensitron STX meters to standardize strap tension and reduce product damage.
Yes. Checking band saw blade tension is a core STX-Plus application; proper blade tension helps maintain cutting accuracy, reduces blade wear, and prevents premature blade failure. Because it handles stiff, stationary materials, it works well for fence wire and saw blades in addition to conventional strapping.

The STX-Plus measures from 1 lb to 2,000 lb on stationary materials. For the full specification set, download the STX-Plus Data Sheet from the product page.

What units of measurement does the STX-Plus display?

The STX-Plus offers selectable units of pounds (lb), kilograms (kg), or decanewtons (daN), so you can match your existing quality documentation and work instructions without manual conversion.

The STX-Plus offers selectable units of pounds (lb), kilograms (kg), or decanewtons (daN), so you can match your existing quality documentation and work instructions without manual conversion.

The STX-Plus is accurate to ±2% of full scale for custom-calibrated models; pre-configured STXM models are ±3% to ±4% of full scale depending on the model. Because accuracy is full-scale based, choosing a range close to your working tension keeps absolute error as small as possible. Each meter ships with a NIST-traceable calibration certificate from Tensitron’s in-house, ISO/IEC 17025-accredited calibration. The meter also ships with an operating manual, available for download from the Tensitron software page.

The STX-Plus is a lightweight, portable instrument in a durable, industrial-grade housing, designed for one-handed use. It accommodates straps up to 4 in wide and 1/4 in thick. What strap and band materials does the STX-Plus work with? The STX-Plus is designed for versatility across poly (plastic) and metal strapping, woven materials, nylon tie-down straps, and stiff stationary materials such as fence wire and saw blades. It accommodates straps up to 4 in wide and 1/4 in thick.
Yes. The meter can be custom-calibrated for your specific straps, or set up using a standard menu of commonly used strap sizes. Custom configurations for specific straps and materials are a standard STX-Plus feature, which keeps readings accurate to the exact material you run.
The STX-Plus is built for quick, intuitive, one-handed operation; you engage the strap and read the tension directly on the multi-screen color display. A tolerance bar on the display gives operators an at-a-glance pass/fail indication against your target range, so even non-technical staff can verify tension reliably. Each unit ships with a carrying case, a NIST-traceable calibration certificate, and an operating manual (available for download from the Tensitron software page).
The STX-Plus charges over USB-C with a universal charger and offers extended battery life with a customizable sleep mode to conserve power between readings. Contact a specialist if you need exact battery specifications for your duty cycle.
The STX-Plus is a smart, connected instrument that stores up to 60,000 readings, transfers data over Wi-Fi for fast integration with your quality system, and provides automated calibration and verification reminders plus maintenance reminders. It has a multi-screen color display with a tolerance bar, selectable units, and customizable sleep mode, all aimed at faster results and instant traceability for audits.
Readings transfer either over Wi-Fi or through a data cable connected directly to your computer, using the Tensitron Data Transfer Application (TDTA), a Windows software package you download from the Tensitron software page. After installing, you register the device using the serial number from the meter’s startup screen and a registration code provided by Tensitron, which then lets you pull stored readings and statistics for traceability and audit records.
Both are on the Tensitron software page. You can download the STX-Plus software (Tensitron Data Transfer Application, a Windows installer) and the STX-Plus operating manual there; the same page contains step-by-step device registration instructions.
The STX-Plus builds on the trusted, proven STX-1 platform and delivers a faster, simpler digital tension-testing experience. Key additions over the STX-1 include Wi-Fi data transfer, USB-C charging with a universal charger, storage for up to 60,000 readings, a multi-screen color display with tolerance bar, automated calibration/verification and maintenance reminders, and a customizable sleep mode. If you run an STX-1 today, the STX-Plus is the direct upgrade path.
Yes. Tensitron periodically runs an STX Trade-Up Program that gives you trade-in credit toward the next-generation STX-Plus, with the goal of a simple, no-disruption upgrade. Trade-in availability and deadlines vary, so check the current STX Trade-Up Program page or contact a specialist for the latest terms.
Choose the STX-Plus when your job is strapping and banding tension: poly/metal strap, woven and nylon tie-down straps, twine, fence wire, and band saw blades up to 4 in wide and 1/4 in thick. Other Tensitron meters target different jobs: the BTX is for flat drive belts and wide tape, the LX for coil winding and fiber optic, and the ACX for aircraft and stationary cables. If you are unsure which fits your material and range, a Tensitron specialist can confirm the right model.
Confirm three things: your strap material (poly, metal, woven, nylon, twine, wire, or blade), its width and thickness (the STX-Plus handles up to 4 in wide and 1/4 in thick), and your target tension (the STX-Plus range is 1 lb to 2,000 lb on stationary material). Share those details with a Tensitron specialist and they will confirm fit and recommend a custom calibration or a standard strap-size menu setup.
Yes. The STX-Plus can be custom-calibrated for your exact straps, or delivered configured with a standard menu of commonly used strap sizes. Specify your strap details when you request a quote so the unit arrives ready to use for your application.

Request a quote through the Tensitron contact form, call (303) 702-1980, or email sales@tensitron.com. You can also order through an authorized Tensitron reseller. Provide your strap type, dimensions, and target tension so the team can quote the correct configuration and any custom calibration.

Standard lead time is typically within two weeks, depending on configuration and whether a custom calibration is required. Confirm the current estimate for your build when you request a quote at (303) 702-1980 or sales@tensitron.com.

Tensitron service includes annual calibration, so a yearly recalibration cycle is the standard recommendation, and the STX-Plus has built-in automated calibration and verification reminders to keep you on schedule. Your required interval may be tighter depending on your quality system or audit requirements.
Yes. Every STX-Plus ships with a NIST-traceable calibration certificate. Tensitron performs all calibration in-house under its ISO/IEC 17025 accreditation, with NIST-traceable standards and documented procedures, and a NIST-traceable certificate is provided with each serviced instrument.
Complete the online service form on the Tensitron Calibration & Service page (no RMA number is required), then package the meter and ship it to Tensitron at 135 Industry Drive, Pittsburgh, PA 15275. Standard digital tension meter service starts at $299; request a current quote, as pricing for your specific meter should be confirmed with Tensitron. Service includes completely dismantling, cleaning, rebuilding, calibrating, and certifying your meter, with expedited service available for an additional fee; special services, such as before-and-after readings, are also available for an additional fee. Note that additional parts or documents may increase the charge, and a storage fee applies if the meter sits more than 30 days after an estimate has been provided, awaiting approval. For service questions, contact service@tensitron.com or (303) 702-1980.
Tensitron stands behind its instruments and provides factory service and calibration directly. A one-year limited warranty is standard for all Tensitron meters.
Because the same experienced technicians who build Tensitron instruments also service and calibrate them, you get specialized expertise, thorough cleaning and diagnosis, fast turnaround, and a NIST-traceable certificate with every instrument. Expedited service is available on request, and routine annual service keeps your STX-Plus accurate and audit-ready.
The STX-Plus ships with a NIST-traceable certificate from Tensitron’s in-house, ISO/IEC 17025-accredited calibration, and stores up to 60,000 readings with Wi-Fi transfer so results drop straight into your quality system for instant traceability and audit confidence. For full details on Tensitron’s accreditation and traceability program, see the Certifications & Traceability page. Tensitron tension meters are also CE and RoHS compliant.

What is the Tensitron ACX?

The Tensitron ACX is a handheld digital cable tension meter built to verify the static tension of aircraft control cables and other stationary cables up to 1/4″ in diameter. It is used worldwide by MROs and manufacturers to support aircraft maintenance and manufacturing, giving technicians a fast, repeatable way to confirm cable tension during installation, inspection, and routine maintenance. Tensitron has manufactured precision tension measurement instruments in the USA since 1935, and the ACX is made in the USA and backed by in-house, NIST-traceable calibration under Tensitron’s ISO/IEC 17025 accreditation. Tensitron tension meters are also CE and RoHS compliant.
Tensitron ACX aircraft cable tension meter for accurate aircraft cable tension measurement
The ACX measures static (steady-state) tension in a cable — the force the cable is carrying — by reading the deflection of the cable as it passes through the meter’s measuring head. Tension is reported on a digital display, typically in pounds (lb) for aircraft and stationary-cable work. Confirm the exact displayed units and full tension range per model on the ACX Data Sheet.
The ACX is designed for aircraft cables and other stationary cables up to 1/4″ (0.25″) in diameter. Tensitron calibrates each meter for specific cable sizes within that range, and calibrations for additional cable sizes are available upon request. For specialized or non-standard cable, Tensitron offers custom calibrations.
The ACX is accurate to ±2% of full scale for all models except the ACX-1200-SCB, which is ±3% of full scale. Accuracy is maintained against standards that are fully traceable to NIST, and the meter is calibrated for the specific cable sizes you intend to measure. For the tightest results, always use the meter on the cable size(s) it was calibrated for.
Cable tension meters read tension indirectly by deflecting the cable, so the relationship between deflection and tension depends on the cable’s diameter and construction. Because of that, the ACX is calibrated for specific cable sizes and cable construction, and using the correct calibration for the cable you’re measuring is essential for an accurate reading. If you work with several cable sizes, Tensitron can calibrate the meter across those sizes, and additional or custom calibrations are available on request.
Select the calibration for the cable size you’re measuring, place the meter onto the cable so the cable seats in the measuring head, and engage the meter to deflect the cable; the digital display then shows the tension. Because the ACX measures static tension, take the reading with the system at rest and in its normal operating configuration. Confirm the exact engagement sequence and any zeroing procedure on the ACX Data Sheet or user manual.
The ACX is widely used in aviation and related fields, including military aviation (control cables and structural cable systems), private/general aviation, and commercial aviation MRO operations, as well as automotive cable systems. It is also used for non-aircraft stationary cables — Anduril uses the ACX-250-1 to measure support-cable tension on surveillance towers, and PSA Airlines uses the ACX-250-1 to inspect flight-control-cable tension. Anywhere a static cable up to 1/4″ needs verified tension, the ACX fits.
The ACX is designed for the static aircraft-control-cable tension verification that cable rigging and maintenance require, and it is used by MROs and airlines such as PSA Airlines for flight-control-cable inspection. Its NIST-traceable, ISO/IEC 17025-based calibration supports the documentation and traceability expectations of aviation maintenance programs. Tensitron’s pages do not explicitly cite a specific FAA advisory circular, so confirm applicability with Tensitron before relying on the ACX for a regulated task.
Both the ACX and the ACM measure static tension on aircraft and stationary cables up to 1/4″ diameter, but the ACX is a digital meter with a digital readout, while the ACM is a mechanical/analog cable tension meter. The digital ACX is generally faster and easier to read, supports data output options, and removes the interpolation a mechanical dial can require; the mechanical ACM needs no battery. Service pricing also differs — standard digital tension meter service starts at $299, while standard ACM mechanical service starts at $329; request a current quote, as pricing should be confirmed with Tensitron.
The ACX is Tensitron’s digital meter purpose-built for aircraft and stationary cables up to 1/4″. Other Tensitron digital meters target different materials and ranges — the CX for tower-rigging and elevator cable, the WX for fabric and plastic film, the TX for small wire/fiber and sutures, and the STX-Plus for strapping and band-saw blades. If your application is aircraft control cables or similar stationary cable up to 1/4″, the ACX is the right family; for heavier structural cable or different materials, a specialist can point you to the correct model.
Tensitron is the original manufacturer and performs all calibration in-house — the same experienced instrument makers who build the meters also calibrate and service them. Calibrations follow documented internal procedures certified to ISO/IEC 17025:2017, and all measurements are fully traceable to NIST; a NIST-traceable certificate is provided with each serviced instrument. Calibration weights are third-party certified every 5 years, and cables used in calibration are inspected at least annually for dimensional tolerance per MIL-DTL-83420N, Table 1.
The ACX carries a one-year warranty against factory defects. The instrumentation is RoHS-compliant (EU Directive 2011/65/EU with amendment 2015/863/EU) and covered by a CE Declaration of Conformity and FCC emissions/immunity testing, with documentation available on Tensitron’s certifications page. Combined with ISO/IEC 17025:2017 calibration practices and NIST traceability, this supports use in regulated maintenance and quality programs.
If you send a meter for service or calibration and choose not to proceed, Tensitron assesses a $100 evaluation fee, which (with the return shipping fee) must be paid before the meter is returned. A storage fee also applies if a meter remains at the facility more than 30 days from the estimate date — $25 initially, then $10 per week thereafter — and meters with no customer communication within six months of the estimate are considered abandoned and discarded. Approving the estimate promptly via PO or payment avoids these fees.
Tensitron recommends annual calibration to keep the ACX measuring accurately. To send a meter in, complete the online service form (no RMA number required) and ship the meter to 135 Industry Drive, Pittsburgh, PA 15275. Standard digital tension meter service starts at $299 (certain specialty ACX meters are $339); request a current quote to confirm the price for your model. Service includes annual calibration plus completely dismantling, cleaning, rebuilding, calibrating, and certifying the meter, with expedited service available for an additional fee. For service questions, contact service@tensitron.com or (303) 702-1980.
Request pricing through Tensitron’s contact/quote form, by calling (303) 702-1980, or by emailing sales@tensitron.com; a specialist will confirm the model, cable-size calibrations, and output option for your application. Because each ACX is calibrated to your specified cable sizes, providing those details up front speeds the quote. Standard lead time is typically within two weeks.
Specify the cable size(s) you measure (up to 1/4″), the tension range/capacity you need, and the data-output option (Analog “A” or RS-232 “E”); these determine the model and measuring-head width. If you handle multiple cable sizes or non-standard cable, ask about additional and custom calibrations. The fastest path is to talk with a Tensitron tension meter specialist, who can match the model to your application requirements.
The ACX is a compact handheld instrument. Its measuring-head width depends on capacity: models up to 250 lb are about 3.4″ wide, and models above 250 lb are about 5.2″ wide. Combined with its rechargeable battery and worldwide charger, the ACX is built to be durable, repeatable, and easy to transport in demanding maintenance environments. Confirm overall dimensions, weight, and kit contents from the ACX Data Sheet.
The ACX uses a rechargeable NiMH (nickel-metal-hydride) battery — not lithium-ion — that provides up to 8 hours of use per charge. The included power supply accepts 100–240V input and ships with interchangeable adapters for US, European, Australian, and other plug configurations, so the same meter can be charged worldwide. This makes the ACX practical for MRO teams and field technicians who travel.

What is the Tensitron CX and what does it measure?

The Tensitron CX (CX-1) is a heavy-duty digital tension meter that measures the tension in cables, wire rope, and other flexible materials. It is designed to safely install or monitor cables so you can achieve consistent tension, avoid mechanical stress, and minimize the risk of cable damage. Tensitron has manufactured precision tension measurement instruments in the USA since 1935.
Tensitron CX-1 cable and wire rope digital tension meter for accurate cable tension measurement
Yes. The CX is a digital meter that measures both static and dynamic tension, allowing you to quickly install, test, and monitor cables, wire rope, and other materials. This makes it suitable both for one-time installation checks and for ongoing condition monitoring.
The CX is available with either an Analog Output (Option A) or an RS-232 Serial Output (Option E). The RS-232 option is useful when you want to log readings or feed data into software or a SCADA-type monitoring system. Specify the output option you need at the time of order.
The CX is built for tower rigging and structural cable work, including catenary systems, elevator maintenance, telecommunications cables, guy wire, zip lines, and theater/stage rigging. In structural and rigging systems, accurate tension keeps support cables within safe operating limits and maintains stability. The CX lets technicians quickly verify tension during installation, inspection, and routine maintenance.
Yes. Communication towers and structural rigging systems depend on properly tensioned cables to maintain structural stability, and the CX is intended for exactly this work. In a published Tensitron case study, the Toho Water Authority used a Tensitron CX to measure tower guy-wire tension and maintain stability across its SCADA infrastructure.
Yes. Elevator systems depend on precisely tensioned cables for safe, smooth operation, and measuring cable tension helps maintain system balance, reduce wear, and ensure reliable performance in commercial and industrial elevators. The CX is one of the meters Tensitron lists for elevator-maintenance tension checks.
The CX checks the tension on flexible cables from 1/16 inch up to 3/4 inch in diameter. This wider diameter capacity is a key reason the CX is chosen for heavier structural, rigging, and elevator cables rather than thin aircraft control cables.
The CX is custom-calibrated to each material it measures, so its tension range is set to match the specific cable and load you specify rather than a single fixed range. Confirm your required maximum load and the units you need (for example lb or N) with a Tensitron specialist when ordering. Confirm the exact tension range and display units for your configuration.
The CX is accurate to ±2% of full scale. Tensitron notes that accuracy may differ depending on the material being measured, which is one reason each unit is custom-calibrated to the specific cable.
The CX is a digital tension meter, so readings are shown on a digital readout rather than an analog dial. Confirm the exact display type, resolution, and backlighting on the CX Data Sheet.
Because the CX is custom-calibrated for each material, Tensitron needs a 10-foot sample of each cable to be measured, and up to 10 calibrations can be loaded onto a single meter. Tensitron maintains an extensive library of cables. Providing the samples promptly helps avoid delays. Standard lead time is typically within two weeks once samples are received.
The CX is a portable, handheld digital meter intended for field use. Confirm the exact battery type and runtime for the CX before quoting; Tensitron’s related ACX model uses a NiMH rechargeable battery rated up to 8 hours per charge, but the CX figure should be verified.
Standard CX-1 rollers are flanged, with a 7/8-inch outside diameter and a 3/4-inch working length. For flat materials, 2-inch or 3-inch cylindrical rollers are available as Option R. Choose the roller configuration that matches the cable or material profile you measure.
Yes — the CX is designed as a durable, easy-to-transport instrument for demanding field work such as tower rigging, structural cable, and elevator maintenance. Its durable construction is highlighted as a way to save time and cost while improving safety and performance in the field. Confirm any specific IP/environmental rating or operating-temperature spec on the CX Data Sheet.
The CX measures cable tension by engaging the cable across its three rollers, so the meter reads the deflection that corresponds to tension; you then read the value directly from the digital display. Because each CX is custom-calibrated to your specific cable, you must use the meter with the same material and roller setup it was calibrated for to get accurate results. Confirm the exact step-by-step measurement procedure in the CX manual or Data Sheet.
Choose the CX for heavy-duty cable and wire-rope work — tower rigging, structural cable, guy wire, catenary, and elevator cable — where diameters run up to 3/4 inch. The ACX is purpose-built for aircraft and other stationary cables up to 1/4 inch in diameter, so it is the better fit for flight-control cable and lighter stationary cable. In short: pick the CX for larger structural/rigging cable, and the ACX for thin aircraft-grade cable.
Tensitron makes a family of meters for different materials — for example the WX for fabric and plastic film, the TX for small wire/fiber and sutures, the STX-Plus for strapping and band-saw blades, and the LX for coil and fiber optic. The CX is the model dedicated to tower rigging and elevator/structural cable. If your material falls outside cable and wire rope, a different model in the lineup is likely the better match.
Specify the cable type and material, the diameter (within the 1/16-inch to 3/4-inch range), your maximum expected tension and preferred units, the data output you want (analog Option A or RS-232 Option E), and your roller needs (standard flanged or Option R cylindrical for flat materials). Because the CX is custom-calibrated, sharing these details up front ensures it arrives calibrated for your exact application. A Tensitron specialist can confirm the configuration before you order.
Request a quote through the Tensitron contact form or by speaking with a tension meter specialist, who can confirm the right configuration for your cable type, industry, and application. You can reach the team at (303) 702-1980 or sales@tensitron.com. Have your cable details ready (type, diameter, expected tension, output, and rollers) to speed up the quote.
Each CX-1 is custom-calibrated for the specific material it will measure, and up to 10 calibrations can be stored on one meter. A 10-foot sample of each material may be required for calibration. This per-material calibration is what allows the CX to hold ±2% of full-scale accuracy across different cables.
Tensitron recommends annual calibration to maintain measurement accuracy and reliability, and a standard service includes that annual calibration. Tensitron also publishes guidance on calibrating your tension meter annually to protect what’s on the line. Build a yearly recalibration cycle into your maintenance schedule to keep readings trustworthy.
Yes. Tensitron performs all calibration in-house under its ISO/IEC 17025 accreditation, with NIST-traceable standards and documented procedures, and a NIST-traceable certificate is provided with each instrument. For full accreditation scope and certificate details, see Tensitron’s Certifications & Traceability page. Tensitron tension meters are also CE and RoHS compliant.
Complete the online service form, then package and ship the meter to Tensitron at 135 Industry Drive, Pittsburgh, PA 15275 — no RMA number is required. Standard digital tension meter service starts at $299; request a current quote, as pricing should be confirmed with Tensitron. Service includes annual calibration plus completely dismantling, cleaning, rebuilding, calibrating, and certifying the meter, with expedited service available for an additional fee. Additional parts, services, or documents may increase the charge, and a storage fee applies if the meter sits more than 30 days awaiting approval. For service questions, contact service@tensitron.com or (303) 702-1980.
The CX carries a one-year warranty against factory defects. For questions about coverage or service, contact Tensitron at (303) 702-1980 or service@tensitron.com.
The same experienced technicians who build Tensitron instruments are the ones who service and calibrate them, which Tensitron highlights alongside fast turnaround and optional expedited service for an additional fee. This in-house, build-and-service model is intended to keep your meter accurate and reliable over its life.

What is the Tensitron LX-1 tension meter?

The LX-1 is a digital, handheld tension meter designed to accurately measure tension on a wide range of flat or round materials, whether they are moving or stationary. It is built for manufacturing, inspection, and quality-control environments where tension consistency matters, delivering reliable, repeatable readings. Tensitron has manufactured precision tension measurement instruments in the USA since 1935.
Tensitron LX-1 cable and wire tension meter for measuring wire, cable, tape, and bands
The LX-1 measures copper wire from 1 to 19 AWG, tape or bands up to 1 inch wide, steel wire up to 0.08 inch, and braided cable up to 1/4 inch. This versatility makes it suitable for coil winding, EDM wire, textile manufacturing, and other industrial applications. Because it reads both moving and stationary material, you can use it during setup and during active production.
Yes. The LX-1 provides digital static and dynamic tension measurement, so operators can monitor tension during initial setup as well as during active production runs on moving wire or cable. Measuring tension on running material helps catch drift before it turns into scrap.
Accurate tension control is critical during coil winding for electronics, transformers, and electrical components, where proper tension ensures consistent winding and a higher-quality finished coil. The LX-1 lets winders verify and document the tension being applied to the wire rather than relying on machine settings alone. It covers copper wire from 1 to 19 AWG, the range typical of many coil-winding operations.

The LX-1 may be suitable for fiber-optic cable applications depending on the cable construction, dimensions, flexibility, and operating tension. Tensitron can review the application before recommending a configuration.

Yes. The LX-1 has a lightweight, portable, and durable design and is described as user-friendly and easy to transport, making it convenient to carry between machines or to a customer site. It runs on a rechargeable NiMH battery rated for up to 8 hours of continuous use per charge, so it does not need to be tethered to power on the floor.
Typical applications include coil winding, communications and electrical cable, fiber optic cable, rope and cord, and flexible tubing for industrial and medical use. Manufacturers such as Whitney Blake and BizLink use Tensitron LX-series meters to verify wire and cable tension during production and maintain consistent quality. If you tell a specialist your material and tension target, they can confirm fit.

LX-1 models are available with full-scale ratings of 25, 50, 100, 250, and 500 lb, with selectable display units of lb, kg, and daN.

The LX-1 has a published accuracy of ±2% of full scale. Accuracy may vary with the material being measured, so the material calibration and selected range should match the application.

The LX-1 has a digital readout and offers two data-output options: Analog Output (Option A) or RS-232 Serial Output (Option E), so readings can be logged or fed to other equipment. Specify the output option you need when ordering. The exact display type and resolution are detailed on the LX Data Sheet.
You route the wire, cable, or band through the meter’s three-roller head, then read the tension directly on the digital display while the material is held or running. Because the LX-1 reads both static and dynamic tension, you can capture a value on stationary material during setup or on moving material during production. For best repeatability, follow the threading and zeroing steps in the LX manual and use a meter that is within its calibration interval.
A compact, durable, battery-powered meter lets one operator check tension at multiple stations or machines without moving the work or running cables to a power source. With up to 8 hours of continuous use per NiMH charge, the LX-1 supports a full shift of spot checks and audits. Portability also makes it practical for field-service technicians who need to verify tension at a customer site.
Choose the LX-1 for medium wire and cable work — copper wire 1 to 19 AWG, tape or bands up to 1 inch, steel wire up to 0.08 inch, and braided cable up to 1/4 inch — especially in coil winding, EDM wire, fiber optic, and textile manufacturing. For smaller wire, fine fiber, or sutures, look at the TX; for heavier cable, wire rope, tower rigging, or elevator cable, look at the CX; for aircraft cable, look at the ACX or ACM. A specialist can match the meter to your material diameter and tension target.

Specify three things: the material type and dimension (AWG, width, or diameter), your target tension and its acceptable tolerance, and whether the material will be moving or stationary. Also choose your data-output option — Analog (Option A) or RS-232 (Option E). Sharing these details with a Tensitron specialist, or referencing the LX Data Sheet, ensures the model and full-scale range fit your process.

Use the Get a Quote / Contact Us form on the LX page, call (303) 702-1980, or email sales@tensitron.com to reach a specialist. Tell them your material, tension target, and required output option so they can quote the correct LX configuration. Standard lead time is typically within two weeks.
Yes. Tensitron performs all calibration in-house under its ISO/IEC 17025 accreditation, with NIST-traceable standards and documented procedures, and a NIST-traceable certificate is provided with each instrument. The same experienced technicians who build the instruments also service and calibrate them. For full accreditation scope and certificate details, see Tensitron’s Certifications & Traceability page. Tensitron tension meters are also CE and RoHS compliant.
Tensitron’s service includes annual calibration, so a yearly recalibration interval is the standard recommendation; many quality systems require it. Each service includes completely dismantling, cleaning, rebuilding, calibrating, and certifying your meter. Your own ISO or customer quality program may dictate a shorter interval.
Complete the online service form on the Calibration & Service page — no RMA number is required — then package the meter and ship it to Tensitron at 135 Industry Drive, Pittsburgh, PA 15275. Standard digital tension meter service starts at $299; request a current quote, as pricing should be confirmed with Tensitron. Expedited service is available for an additional fee. Note that a storage fee applies if the meter sits more than 30 days awaiting approval, and a $100 evaluation fee applies if you decline the recommended service. For service questions, contact service@tensitron.com or (303) 702-1980.
The LX-1 carries a one-year warranty against factory defects. Routine annual calibration and service are handled directly by Tensitron’s in-house technicians, who also build the instruments, ensuring specialized support over the life of the meter. For warranty or service questions, contact (303) 702-1980 or service@tensitron.com.

Tensitron provides in-house calibration and service for the LX-1, with a standard turnaround time of within two weeks. Expedited service is also available upon request.

What is the Tensitron ACM?

The Tensitron ACM is a mechanical (analog) aircraft cable tension meter used to quickly and accurately verify the tension in flexible cables. It reads tension directly on an analog dial with no batteries or power required, and it has built-in cable selection so you do not have to fumble with loose risers. Tensitron has manufactured precision tension measurement instruments in the USA since 1935, and the ACM is its field-proven analog verification tool for aircraft and automotive cable work.
Tensitron ACM mechanical cable tension meter for accurate cable tension measurement
The ACM measures the static tension in a flexible cable — the pulling force carried along the cable, expressed in pounds (lb). It does this by deflecting the cable a known amount between three contact points and translating that deflection into a tension reading on the dial. This lets technicians confirm a control or structural cable is rigged within its correct tension range during installation, inspection, and routine maintenance.
ACM instruments are designed to measure flexible cables with diameters from 1/16″ up to 1/4″, CWT (cable size) numbers from 5 to 25, and tension from 5 to 600 pounds. Specific models cover sub-ranges — for example 5–100 lb up to 40–600 lb, plus CWT-marked models at 10–150 lb and 40–300 lb. Calibrations for other cable sizes are available upon request.
The ACM is fully mechanical, so its analog dial requires no power and there are no batteries to die in the field, in tight spaces, or on the flight line. That makes it durable, simple, and dependable for technicians who want a rugged verification tool that is always ready to read. It is the right pick when you value no-battery reliability, simplicity, and a proven analog instrument over digital data capture.
The ACM uses durable mechanical construction designed to hold up to repeated field use, which Tensitron positions as a way to save time and cost over the life of the instrument. Because it has no electronics or power source, there is less to fail in hangars, shops, or vehicle bays. It is also compact and easy to transport for on-aircraft and on-vehicle work.
The ACM is used to verify aircraft control-cable and structural-cable tension during installation, inspection, and routine maintenance — the core task of keeping aircraft flying safely. Tensitron lists it across military aviation (control and structural cable systems), private/general aviation (routine tension verification), and commercial aviation MRO (maintenance, repair, and overhaul). It is ideal for aircraft cables or other stationary cables up to 1/4″ in diameter.
Yes. Tensitron lists automotive cable systems — the testing and verification of control cables used in vehicle mechanisms — as a primary ACM application. The same one-handed, no-power reading process that suits aircraft control cables applies to automotive control-cable verification.
Yes. Tensitron describes its tension meters as letting technicians and maintenance teams quickly verify cable tension during installation, inspection, and routine maintenance. The ACM’s compact, one-handed operation is built for repeated checks in tight spaces over the service life of the equipment.
Tensitron states ACM accuracy of ±4% to ±8% of full scale, depending on the model. As an analog instrument, the exact figure depends on the specific model and range you select; it is recorded on the calibration certificate supplied with the meter. The meter also ships with an operating manual, available for download from the Tensitron software page.

The ACM uses an analog dial and calibration chart to determine cable tension in pounds (lb). The dial reading is converted using the chart for the selected cable size.

CWT refers to standardized cable-size numbers (the site cites CWT sizes from 5 to 25) commonly used for aircraft control cables. Some ACM models are calibrated and marked specifically for CWT cable sizes — for example the 10–150 lb and 40–300 lb CWT models — so the meter matches the cable callouts a technician works with. If your cables are specified by CWT number, choose a CWT-marked ACM.
The ACM has built-in cable selection, so there are no loose risers to swap, lose, or fumble with — a key practical advantage over meters that use separate riser sets. You select the cable size on the meter itself, then take the reading. Both inch and CWT sizes are supported by the built-in selection.
Operation is quick, easy, and one-handed, and the meter is compact enough for tight spaces. You set the built-in cable selection for your cable size, position the meter on the cable, and read the tension directly off the analog dial. A Memory Lock Pointer holds the reading so you can read it after withdrawing the meter from a hard-to-reach area, and the calibration chart attached to the meter helps you convert the reading for your specific cable.
The Memory Lock Pointer is a feature that holds the dial reading in place, which is especially useful when measuring in hard-to-reach areas where you can’t see the dial during the measurement. The calibration chart is attached directly to the meter so the reference you need to interpret the reading travels with the instrument. Each ACM also ships with a NIST-traceable calibration certificate.
The ACM is the mechanical/analog meter and the ACX is Tensitron’s digital meter; both are aimed at aircraft cables and other stationary cables up to 1/4″ in diameter. The ACM gives you no-power, no-battery analog reliability with a simple direct dial reading, while the ACX adds digital features. Choose the ACM when durability, simplicity, and battery-free operation matter most; choose the ACX when you want digital readout or data capabilities.

Choose the ACM when battery-free mechanical operation is preferred. The ACX provides a direct digital reading, higher specified accuracy, and optional data output. Use the Aircraft Cable Meter Selector to compare options and find the best fit for your application.

Match three things: your cable diameter (1/16″–1/4″) or CWT size (5–25), your required tension range (model ranges run from 5–100 lb up to 40–600 lb, plus CWT 10–150 lb and 40–300 lb), and whether your cables are called out in inch or CWT sizes. Pick the model whose range brackets your working tension for the best reading resolution. If your cable size isn’t standard, note that calibrations for other cable sizes are available upon request.
Tensitron invites you to talk with a tension meter specialist for guidance and a quote via the Contact Us page, by phone at (303) 702-1980, or by email at sales@tensitron.com; Tensitron also sells through resellers. Standard lead time is typically within two weeks.
Yes. Each ACM includes a calibration certificate, and a calibration chart is attached to the meter for field reference. Tensitron performs all calibration in-house under its ISO/IEC 17025 accreditation, with NIST-traceable standards and documented procedures. Tensitron tension meters are also CE and RoHS compliant.

Tensitron recommends recalibrating your tension meter annually to protect measurement accuracy. Standard TR and ACM mechanical tension meter service starts at $339; request a current quote, as pricing should be confirmed with Tensitron. Service includes annual calibration plus completely dismantling, cleaning, rebuilding, calibrating, and certifying your meter; additional parts, services, or documents may increase the charge. No RMA number is required — complete the online service form and ship the meter to 135 Industry Drive, Pittsburgh, PA 15275. For service questions, contact service@tensitron.com or (303) 702-1980.

Tensitron’s service is performed by the same experienced technicians who build the instruments, offers fast turnaround (with expedited service available for an additional fee), and provides a NIST-traceable certificate with each instrument. Note the service policies effective 2/1/24: a $25 storage fee applies after 30 days (then $10/week), a $100 evaluation fee applies if you decline required service, and meters are considered abandoned after six months without communication.
The ACM carries a one-year warranty against factory defects. For service or warranty questions, contact Tensitron service at service@tensitron.com or (303) 702-1980.
Yes — Tensitron performs all calibration in-house under its ISO/IEC 17025 accreditation, with NIST-traceable standards and documented procedures, and each instrument ships with a NIST-traceable certificate. The ACM is made in the USA. Tensitron also positions the ACM specifically for verifying aircraft control-cable tension in aviation maintenance, including military, private, and commercial MRO work where technicians follow FAA cable-rigging practices. Confirm acceptance of the specific instrument and certificate against your own quality system, OEM maintenance manual, and applicable FAA guidance.

What is the Tensitron TX-1 tension meter?

The TX-1 is a handheld digital tension meter built for measuring tension in fine wire and filaments during manufacturing, quality control, and R&D. It provides quick, one-handed verification of tension on delicate materials where consistency is critical, with an easy-to-read digital display and a color-bar graphic for a fast visual of tension. Tensitron has manufactured precision tension measurement instruments in the USA since 1935.
Tensitron TX-1 digital tension meter for wire, fiber, and filament tension measurement

Applications include fine copper and magnet wire, yarn, thread, filaments, fiber-optic strands, film, tape, and ribbon.

The material is routed across three rollers on the meter head, and the deflection of the center roller is converted to a tension reading shown on the digital display. The instrument can measure both static and dynamic (moving) tension, and a built-in data-averaging function smooths readings in fast-moving applications. Built-in material/diameter selection lets operators measure efficiently without manual charts or complex setup.
Yes. Medical manufacturing — surgical sutures, bandages, and other medical fibers — is a core application Tensitron calls out for this material class, where reliable tension measurement helps ensure material strength, consistency, and product safety. The TX-1 is designed for delicate and precision materials including flexible medical materials, fine wire, yarn, and narrow fabrics. For suture work, the right model is typically the lowest-range TX-125-1 (0–125 g); confirm your exact tension window with a specialist.
Yes — coil winding of fine wire used in electronics, transformers, coils, and micro-components is a primary TX-1 application, and proper tension helps prevent wire stretching, breakage, and uneven coil formation. Real customers use it this way: Climco Coil improved coil production consistency with the TX-5000-1, and Endicott Coil uses Tensitron meters to monitor magnet-wire tension during winding. A mounting bracket (Part No. TR-700, with magnetic base) is available for hands-free use on a winding line.
Yes. Wire EDM machining requires extremely consistent wire tension to maintain cutting accuracy and prevent wire deflection and breakage; there is a dedicated TX-5EDM-1 model calibrated for 0.10, 0.15, 0.20, 0.25, and 0.30 mm EDM wire. For textiles, the TX-1 supports accurate tension monitoring of delicate fibers during spinning, weaving, and processing to maintain fiber integrity and uniform fabric quality.

The TX-1 provides selectable units of g, lb, and N. TX-1 has a standard accuracy of ±1% of full scale.

Repeatability depends on correct material selection, zeroing, positioning, engagement, and selecting a model suited to the intended tension range.

The TX-1 provides a digital tension reading and color-bar graphic. Data storage and statistics are included, while speed and length measurement are optional.

Select the appropriate material and size from the TX-1 menu, then hold the meter in the same position you will use for the measurement and press ZERO. Squeeze the trigger to separate the rollers, place the material between the rollers, and slowly release the trigger until the material is fully engaged. The tension reading will then appear on the digital display.

For best results, take several readings by disengaging and re-engaging the meter on the material.

The TX-1 runs on a rechargeable NiMH battery (nickel-metal hydride — not lithium-ion) that delivers up to 8 hours of continuous use per charge. The included power supply accepts 100–240V input and ships with interchangeable adapters for US, European, Australian, and other plug configurations, so it works on international lines.

Yes. Analog output and RS-232 serial output are available as options.

Start with the expected tension range, then confirm the material size and calibration requirements. Use the TX Tension Meter Selector to narrow down the right configuration for your application.

The TX-1 is intended for finer wires, fibers, and delicate materials. The LX-1 is better suited to larger materials or higher tensions outside the TX-1 range.

With custom calibration, the TX-1 can accommodate a range of materials beyond its standard wire and filament calibrations. Example maximum sizes include:

  • Solid copper wire: 20 AWG (0.8 mm)

  • Stranded steel wire: 0.04 in. (1 mm)

  • Solid steel wire: 0.02 in. (0.5 mm)

  • Tubing: 0.2 in. (5 mm)

  • Tape and bands: up to 1.5 in. (38 mm) wide

Up to 10 custom material calibrations can be added. For larger materials, more rigid materials, or higher tension ranges, contact Tensitron to confirm whether the TX-1 or another meter such as the LX-1 is the better fit.

Use the TX Tension Meter Selector to narrow down the appropriate meter for your application.

To request a quote or order a TX-1, provide the material type, dimensions, expected tension, measurement conditions, and any output requirements. This information helps Tensitron confirm the appropriate configuration for your application.

Request a TX-1 quote 

Each TX-1 includes a carrying case and a NIST-traceable calibration certificate, along with the rechargeable NiMH battery and a 100–240V power supply with interchangeable international adapters. Options such as the TR-700 mounting bracket, alternate rollers, and output configurations are added per order. Confirm the exact kit contents for your configuration when you order. The meter also ships with an operating manual, available for download from the Tensitron software page.

Yes. TX-1 calibration is traceable directly to NIST and is performed in-house under Tensitron’s ISO/IEC 17025:2017-accredited calibration system. Calibration follows documented procedures using traceable standards, and a NIST-traceable calibration certificate is provided with the instrument.

For more information, visit Tensitron Certifications & Traceability.

Tensitron recommends recalibrating your tension meter annually to protect measurement accuracy.

Standard TR/TX tension meter service starts at $339; request a current quote, as pricing should be confirmed with Tensitron.

Service includes annual calibration plus completely dismantling, cleaning, rebuilding, calibrating, and certifying your meter; additional parts, services, or documents may increase the charge.

No RMA number is required — complete the online service form and ship the meter to 135 Industry Drive, Pittsburgh, PA 15275.

For service questions, contact service@tensitron.com or (303) 702-1980.

Tensitron calibration and service is performed by the same experienced technicians who build our instruments. Standard calibration turnaround is within two weeks, with expedited service available within one week for an additional fee. Each calibrated instrument also includes a NIST-traceable calibration certificate.

Note the service policies effective 2/1/24: A $25 storage fee applies after 30 days (then $10/week), a $100 evaluation fee applies if you decline required service, and meters are considered abandoned after six months without communication.

The TX-1 carries a one-year warranty against factory defects, subject to the applicable warranty terms.

For service or warranty questions, contact Tensitron service at service@tensitron.com or (303) 702-1980.

The TX-1 is calibrated using standards traceable to NIST, with calibration performed in-house under Tensitron’s ISO/IEC 17025:2017 accreditation. A NIST-traceable calibration certificate is available with the TX-1.

For additional information on calibration standards, traceability, and compliance, visit Tensitron Certifications & Traceability.

What is the Tensitron WX tension meter?

The WX is a portable digital tension meter built to measure the running or static tension of wide, flat materials such as fabric, paper, plastic film, plastic sheet, metal foil, and conveyor belts. It is designed for web-handling and converting environments where consistent tension is critical to process control and product quality. Like all Tensitron instruments, it is made in the USA; Tensitron has manufactured precision tension measurement instruments in the USA since 1935.
Tensitron WX fabric and web tension meter for measuring wide flat materials and conveyor belt tension

The WX measures the tension force in wide, flat materials such as fabric, paper, film, plastic sheets, metal foils, and conveyor belts. It can measure both moving and stationary materials and displays tension in selectable units of pounds (lb), kilograms (kg), or decanewtons (daN).

The material is routed across three rollers on the meter head, and the deflection of the center roller is converted to a tension reading shown on the digital display. The instrument can measure both static and dynamic (moving) tension, and a built-in data-averaging function smooths readings in fast-moving applications. Built-in material/diameter selection lets operators measure efficiently without manual charts or complex setup.

The WX is best suited for wide, flexible, flat materials, typically 8 inches wide or more and up to 1/8 inch thick. Common materials include fabric, paper, film, plastic sheets, metal foils, and conveyor belts. It can be used on both moving and stationary materials, making it well suited for production, converting, web-handling, and process-control applications.

Not sure whether the WX or BTX fits your application? Use the Flat Material Meter Selector to narrow down the right meter based on your material and operating tension.

The WX is designed to measure tension in materials such as plastic film and metal foil, including thin, flexible webs. Because delicate materials can respond differently to contact and tension, the correct WX configuration should be selected based on the material, dimensions, and expected operating tension.

WX meters can also be calibrated to the specific material being measured for more reliable readings.

Not sure whether your film or foil is a good fit? Use the Flat Material Meter Selector or contact Tensitron to review the application.

Consistent web tension helps keep material tracking properly, feeding smoothly, and maintaining its shape throughout the process. Too much or too little tension can contribute to wrinkles, stretching, web breaks, registration problems, uneven winding, and inconsistent finished products.

Maintaining stable tension can help converters reduce material waste, improve product quality, and avoid production interruptions.

Yes. The WX can measure tension on moving or stationary materials, allowing operators to check tension during active production as well as during setup or maintenance.

For help choosing the appropriate configuration for your material and tension range, use the Flat Material Meter Selector.

The WX series offers tension measurement ranges from 0.5 lb up to 1,000 lb, depending on the model selected. Available ranges include:

  • WX-25-1: 0.5–25 lb

  • WX-50-1: 5–50 lb

  • WX-100-1: 5–100 lb

  • WX-250-1: 5–250 lb

  • WX-500-1: 25–500 lb

  • WX-1000-1: 50–1,000 lb

The appropriate range depends on the material and normal operating tension. Use the Flat Material Meter Selector to narrow down the right meter and range for your application.

Standard accuracy is ±2% of full scale. Tensitron notes that actual accuracy may vary depending on the properties of the material being measured, which is why the meter is calibrated to your specific materials. Each WX ships with a NIST-traceable calibration certificate documenting its performance. The meter also ships with an operating manual, available for download from the Tensitron software page.

The WX features a backlit digital display with a color-bar graphic and selectable units in lb., kg, or daN. It is powered by a rechargeable NiMH battery with up to 8 hours of continuous use per charge.

For data output, the WX can be configured with an optional Analog Output (Option A) or RS-232 Serial Output (Option E).

View the WX Data Sheet

Each WX ships with a carrying case and a NIST-traceable calibration certificate. The meter is also powered by a rechargeable NiMH battery for portable use.

Select the correct material calibration on the WX, then position the meter so the material is properly engaged with the contact rollers. Hold the meter steady and read the tension directly on the digital display. The WX can be used on both moving and stationary materials.

For a closer look at proper setup and measurement technique, watch the BTX & WX On-Demand Webinar.

A single WX can be calibrated for up to 10 different user-specified materials. You select the active material on the meter so each reading reflects the correct calibration. If you later add a new material, the meter can be recalibrated to include it through Tensitron service.

Choose the WX for wide, flat web or sheet materials such as fabric, paper, film, plastic sheets, metal foils, and conveyor belts. Choose the BTX for narrower flat materials such as belts, bands, webbing, straps, and wide tape. Both can measure moving or stationary materials.

Not sure which fits your application? Use the Flat Material Meter Selector to compare BTX and WX options based on your material and operating tension.

The WX is designed specifically for wide, flat materials, typically 8 inches wide or more, such as fabric, paper, film, plastic sheets, metal foils, and conveyor belts.

Tensitron’s cable meters are designed for cable and wire-rope applications, while the TX series is intended for fine wire, filament, fiber, yarn, and other narrow materials. Each meter family uses a measurement setup suited to the material it is designed to handle.

View All Tensitron Tension Meters

Start with the material type, width, thickness, and expected tension range. Also consider whether the material will be measured moving or stationary and whether data output is required.

Use the Flat Material Meter Selector to narrow down the appropriate WX configuration for your application.

To request a quote or order a WX, provide the material type, width, thickness, expected tension range, measurement conditions, and any data output requirements. This information helps Tensitron confirm the appropriate WX configuration for your application.

Request a WX Quote

To calibrate a WX to your materials, provide a 10-foot-long sample of each material the meter will measure. For WX calibration, each sample should be 10 inches wide. The WX can store calibrations for up to 10 user-specified materials.

It is also helpful to provide your expected operating tension range, since the meter can be scaled to improve accuracy around those tension levels.

Tensitron recommends recalibrating the WX once a year to maintain measurement accuracy and reliability. Meters used heavily, in demanding environments, or for quality-critical measurements may require more frequent calibration based on the application or quality system requirements.

Tensitron provides in-house calibration and service to restore the meter to factory specifications. Learn more about Tensitron Calibration & Service.

Tensitron’s calibration and service includes dismantling, cleaning, rebuilding, calibrating, and certifying the WX, along with a NIST-traceable calibration certificate. Standard digital tension meter service starts at $299; additional parts, special services, or documentation may increase the final cost.

Standard turnaround is within two weeks. Expedited service within one week is also available for an additional fee.

For current pricing and service details, visit Tensitron Calibration & Service.

Complete the online service form on Tensitron’s Calibration & Service page — no RMA number is required — then package the meter and ship it to 135 Industry Drive, Pittsburgh, PA 15275.

Note the posted policies: a storage fee applies if the meter sits more than 30 days awaiting approval, a $100 evaluation fee applies if you decline recommended service, and meters with no customer communication for six months are considered abandoned.

The WX includes a one-year warranty against factory defects. For warranty questions, repairs, or service support, contact Tensitron directly.

Contact Tensitron Service

Yes. WX measurements are supported by NIST-traceable calibration, with calibration performed in-house under Tensitron’s ISO/IEC 17025:2017-accredited calibration system. Tensitron uses documented procedures and standards that are traceable directly to NIST, and each WX is supplied with a NIST-traceable calibration certificate.

For additional information, visit Tensitron Certifications & Traceability.

The WX is designed, built, calibrated, and serviced in the USA by Tensitron, which has manufactured precision tension measurement instruments in the USA since 1935. That long track record — plus in-house manufacturing and calibration — means the people who build your meter are the same people who stand behind it.

What is the Tensitron BTX-1 and what does it measure?

The WX is a portable digital tension meter built to measure the running or static tension of wide, flat materials such as fabric, paper, plastic film, plastic sheet, metal foil, and conveyor belts. It is designed for web-handling and converting environments where consistent tension is critical to process control and product quality. Like all Tensitron instruments, it is made in the USA; Tensitron has manufactured precision tension measurement instruments in the USA since 1935.
Tensitron BTX-1 band tension meter for measuring strap, belt, webbing, and tape tension

The BTX-1 uses an easy-to-read backlit digital display that shows the measured tension directly. A color-bar graphic provides a quick visual indication of the tension level, and readings can be displayed in selectable units of lb, kg, or daN.

Yes — Tensitron has manufactured precision tension measurement instruments in the USA since 1935, giving the BTX nearly a century of engineering heritage behind it. That experience is reflected in the meter’s durable construction and the fact that the same technicians who build the instruments also service and calibrate them.
The BTX-1 is ideal for narrow, flat materials including nylon straps, seat belts, narrow poly web, flat drive belts, small V belts (up to 1/8 inch, stationary), wide tape, and pallet-securing straps. It is the right choice within the Tensitron line for flat drive belts, wide tape, and label/web-type materials. If your exact material or width is not listed, Tensitron can advise on suitability.
Yes. The BTX-1 is purpose-built for flat drive belts and also handles small V belts up to 1/8 inch in a stationary measurement. For belt-drive maintenance and setup, this lets you verify tension is within target rather than relying on feel or deflection guesswork.
Yes. The BTX-1 is suited to wide tape and narrow poly web, which makes it applicable to tape, label, and web-handling lines where consistent web tension drives print registration, lamination, and converting quality. For specific tape or label web widths and materials, confirm the exact configuration with Tensitron.

The BTX can measure both moving and stationary materials, so it can be used while a line is running as well as during setup or maintenance. Tensitron specifically lists the BTX for narrow, flat materials in motion or at rest.

One exception is small V-belts up to 1/8 inch thick, which are specified for stationary measurement.

The BTX-1 measures tension ranges from 3 lb. to 500 lb. This span covers light web and tape applications at the low end through heavier straps and pallet-securing bands at the upper end.

Tension is specified in pounds (lb.), with the published range running from 3 lb. to 500 lb. If you require metric units (such as Newtons) or a different display configuration, confirm availability with Tensitron.

The BTX-1 has a standard accuracy of ±2% of full scale. Actual accuracy can vary depending on the properties of the material being measured, which is why BTX-1 meters are custom-calibrated to the specific materials they will be used with.

Within the meter’s range, Tensitron can also scale the calibration to your expected operating tension levels to improve accuracy around those points.

Each BTX-1 includes a carrying case and a NIST-traceable calibration certificate, and custom rollers and calibrations are available for other materials and diameters. The display is a backlit digital readout with a color-bar graphic. The specific power source (battery type or charging method) is listed on the BTX Data Sheet.
The BTX-1 uses a three-roller measuring head: the flat material or belt is placed across the rollers so the meter deflects the band a known amount and converts that into a tension value, shown instantly on the backlit display. Built-in band selection and onboard calibration data let you select the correct material profile before reading, so results are consistent. For best results, follow the band-selection and measurement steps in the BTX manual.

Not always. The BTX-1 comes standard with 2-inch Delrin rollers, which work for many common belts, bands, webbing, and tape applications.

For materials that require a different roller size or surface, Tensitron offers custom rollers, including 3-inch rollers and options in stainless steel or aluminum. The BTX-1 is also custom-calibrated to the specific materials being measured.

Not sure what configuration your material requires? Use the Flat Material Meter Selector or contact Tensitron for application review.

Choose the BTX for narrow, flat materials such as belts, bands, webbing, straps, and tape. Choose the WX for wider web and sheet materials such as fabric, paper, film, plastic sheets, metal foils, and conveyor belts.

If you are unsure which meter fits your material, use the Flat Material Meter Selector to narrow down the right option for your application.

The BTX is designed for narrow, flat materials such as belts, bands, webbing, straps, and wide tape. Other Tensitron meter families are designed for different material types:

  • WX: wide web and sheet materials such as fabric, film, paper, foil, and conveyor belts

  • TX: fine wire, filament, fiber, yarn, and other narrow materials

  • ACX / ACM: aircraft and other stationary cables

  • CX: larger cable, wire rope, and rigging applications

  • STX-Plus: strapping, band saw blades, and similar tension applications

The best meter depends on the material, dimensions, and expected tension range.

View All Tensitron Tension Meters

To request a quote or order a BTX-1, provide the material type, width, thickness, expected tension range, measurement conditions, and any data output requirements. This information helps Tensitron confirm the appropriate BTX-1 configuration and calibration for your application.

Request a BTX-1 Quote

Standard BTX-1 lead time is typically within two weeks. Lead times may vary for configurations requiring custom rollers, special materials, or custom calibration requirements.

For the most accurate estimate for your application, contact Tensitron.

Yes. Every BTX-1 is custom-calibrated to the specific material or materials it will measure and ships with a NIST-traceable calibration certificate.

Tensitron performs calibration in-house under its ISO/IEC 17025:2017-accredited calibration system, using documented procedures and standards traceable directly to NIST.

For more information, visit Tensitron Certifications & Traceability.

Tensitron recommends recalibrating the BTX-1 once a year to maintain measurement accuracy and reliability. More frequent calibration may be appropriate for meters used heavily, in demanding environments, or in applications with stricter quality requirements.

For calibration or service, visit Tensitron Calibration & Service.

BTX calibration and service includes inspection, dismantling, cleaning, rebuilding, calibration, and certification, with a NIST-traceable calibration certificate provided after service.

Standard digital tension meter service starts at $299. Additional parts, repairs, special services, or documentation may increase the final cost.

Standard turnaround is within two weeks, with expedited service within one week available for an additional fee.

For current pricing or service questions, Contact Tensitron

To send a BTX in for calibration or service:

  1. Complete the Tensitron Calibration Service Request and provide the instrument details.

  2. Package the BTX securely.

  3. Ship it to: 135 Industry Drive, Pittsburgh, PA 15275

No RMA number is required. Tensitron performs calibration and service in-house and includes a NIST-traceable calibration certificate with the completed service.

The BTX-1 comes with a one-year warranty against factory defects.

For warranty or service questions, Contact Tensitron.

The BTX-1 is supplied with a NIST-traceable calibration certificate. Tensitron performs calibration in-house under its ISO/IEC 17025:2017-accredited calibration system, using documented procedures and standards that are traceable directly to NIST.

This traceability helps support quality-system documentation and audit requirements.

For more information, visit Tensitron Certifications & Traceability.

What is a tension transducer and how is it different from a handheld tension meter?

A tension transducer is a sensor that is permanently mounted inline on a machine to continuously measure the tension of material as it runs through the process. Unlike a handheld meter, which a person uses to take spot checks by hand, a transducer converts tension into a reliable electrical signal that can be sent to a remote display, a high-speed recorder, or an automatic tension control system. This makes transducers ideal for continuous, measurable quality control and process traceability rather than periodic manual readings.
Tensitron mechanical tension transducer measuring wire tension

Choose a tension transducer when tension needs to be measured continuously or built directly into a machine or production line. Transducers are well suited for process monitoring, automation, control systems, and applications where tension data needs to be sent to a PLC, display, or data-acquisition system.

Choose a handheld Tensitron meter for portable spot checks, setup, troubleshooting, maintenance, or measurements at multiple locations.

For help determining which approach fits your application, Contact Tensitron.

The tension signal can be output for remote display, high-speed recording, or automatic tension control, giving you continuous, real-time tension data for process control and traceability. This lets you monitor a running process, capture data for quality records, and feed a control loop that holds tension to target. This applies to both the Fiber & Wire and Web & Belt lines.

The Fiber & Wire transducer line measures continuous tension in fiber, wire, cable, and other narrow materials. The sensors are permanently mounted in the process and convert tension into a signal that can be used for remote display, high-speed recording, or automatic tension control.

Typical applications include coil winding, fiber processing, wire production, and other manufacturing processes where tension needs to be monitored continuously rather than checked periodically with a handheld meter.

For help selecting a transducer for your application, Contact Tensitron

The Fiber & Wire transducer line covers a wide range of tensions depending on the model:

  • Fiber transducers: 5 to 5,000 g

  • Low-force load cells: 1 to 100 lb

  • Notched-beam transducers: 10 to 1,000 lb

Different sensor configurations are available to match the material, tension range, and installation requirements. Tensitron can also customize transducers for specific applications.

For help selecting the appropriate range, Contact Tensitron.

The Web & Belt transducer line measures continuous tension in webs, belts, and other wider running materials, including textile, film, paper, tape, and label stock.

These transducers are permanently mounted in the process, making them well suited for continuous monitoring, quality control, high-speed recording, and automatic tension control in web-handling and belt applications.

For help selecting the right transducer for your application, Contact Tensitron.

The Web & Belt transducer line is available in several tension ranges depending on the sensor configuration:

  • Small Space Transducer: 5–5,000 g

  • Cantilever Transducer: 1–25 lb

  • Low Force Cell: 1–100 lb

  • Single Roller Web Transducer: 2–100 lb

  • S-Column Transducer: 5–250 lb

  • Notched Beam Transducer: 25–1,000 lb for web applications

  • Pillow Block Load Cell: 25–1,000 lb

Transducers can also be customized for specific tension ranges, materials, rollers, and installation requirements.

For help selecting the appropriate range and configuration, Contact Tensitron.

Tensitron transducers generate a tension signal that can be used for remote display, high-speed recording, or automatic process control.

The transducer is typically connected to a signal conditioner, which provides the excitation, amplification, calibration, and output needed to interface with a display, data-acquisition system, PLC, or other control equipment. Tensitron offers the OMEGA DP25B Series signal conditioner, with options including analog output and relay outputs.

Customers may also use their own compatible signal conditioner, and Tensitron can provide wiring instructions for the connection.

For help matching the transducer and output configuration to your control system, Contact Tensitron.

Yes. Both lines are described as supporting automatic process control in addition to remote display and high-speed recording, and the sensors are characterized as precise, high-speed sensors permanently mounted for stable readings. That combination is what enables a continuous control loop. The specific controller, amplifier/conditioner, or PLC interface required for your setup should be confirmed with a Tensitron specialist.

Across Tensitron’s currently listed transducer models, available tension ranges extend from 5 g up to 1,000 lb, depending on the sensor design and application.

Lower-force transducers are available for fiber, wire, and lightweight web applications, while higher-capacity load cells support heavier web, belt, cable, and process applications. Transducers can also be customized to match specific materials, tension ranges, rollers, and installation requirements.

For help selecting the appropriate transducer, Contact Tensitron.

Tensitron transducers are designed to be permanently mounted within the machine or production line for continuous tension measurement. Depending on the model, the material runs across one or more sensing rollers so the transducer can continuously monitor tension.

Available configurations include single-roller, 3-roller, low-profile, cantilever, S-column, notched-beam, and pillow-block designs to accommodate different machine layouts and available space. Tensitron can also customize the roller type, roller dimensions, and mounting configuration for the application.

For help determining the best mounting arrangement for your equipment, Contact Tensitron.

Yes. Tensitron transducer rollers can be changed or customized to match your material and machine requirements. Roller type and dimensions can be modified, and in some applications, your own rollers can be incorporated into the transducer design.

The transducer can also be customized for the required tension range, calibration, mounting arrangement, and installation environment.

For help configuring a transducer for your equipment, Contact Tensitron.

Tensitron transducers are designed for precise, repeatable tension measurement, but accuracy depends on the specific transducer, tension range, material, roller configuration, and installation.

Each transducer system can be customized and calibrated for the application to provide reliable continuous tension monitoring. For applications with a specific accuracy requirement, Tensitron can help select and configure the appropriate sensor.

Contact Tensitron to discuss your accuracy and application requirements.

Choose the Fiber & Wire transducer line for narrow materials such as fiber, filament, wire, cable, and similar strand-type products.

Choose the Web & Belt transducer line for wider, flat materials such as film, paper, fabric, tape, labels, webs, and belts.

The best choice also depends on the tension range, material dimensions, available mounting space, roller requirements, and control-system needs.

For help selecting the right transducer line and configuration, Contact Tensitron.

Tensitron transducer systems can be customized around the material, machine layout, and measurement requirements of the application. Available custom options can include:

  • Roller type and dimensions

  • Customer-supplied rollers

  • Calibration for the specific material and tension range

  • A transducer design suited to the available installation space

  • Signal conditioning options, including analog output and relay outputs

  • Integration with a compatible customer-supplied signal conditioner

Tensitron offers a variety of sensor designs and can configure the transducer system around the requirements of the application.

For help specifying a custom transducer, Contact Tensitron.

To request a quote or place an order for a transducer, provide details about your material, material dimensions, expected tension range, machine layout, mounting requirements, roller requirements, and any signal or control-system needs. This information helps Tensitron determine the appropriate transducer type and configuration for your application.

Request a Transducer Quote

Lead time for a Tensitron transducer depends on the transducer type, tension range, roller configuration, calibration, and any application-specific customization.

For the current lead time for your configuration, Contact Tensitron.

Yes. Tensitron transducers are factory-calibrated, with calibration traceable directly to NIST. Calibration is performed in Tensitron’s ISO/IEC 17025:2017-accredited laboratory using documented procedures and traceable standards.

A NIST-traceable calibration certificate is included to document the calibration and support quality and traceability requirements.

For more information, visit Tensitron Certifications & Traceability.

Tensitron transducers do not require routine recalibration. Each transducer is verified at the time of purchase based on the customer’s specified tension range and material.

If a transducer is later returned to Tensitron for repairs, its performance is verified again before it is returned to the customer.

For transducer repair or service questions, Contact Tensitron.

Warranty coverage for Tensitron transducers may depend on the specific transducer and configuration. For warranty terms or support for your transducer, Contact Tensitron.

Tensitron services its transducers in-house. If a transducer is returned for repair, Tensitron can evaluate the unit, complete the necessary repairs, and verify its performance against the customer’s specified material and tension range before returning it.

Using Tensitron for service helps ensure the transducer is checked against the original application requirements rather than treated as a generic sensor.

For transducer service or repair questions, Contact Tensitron.

Why does my tension meter need to be recalibrated?

Tension meters are precision instruments, and normal handling, wear, and use can cause measurement drift over time, putting your readings out of tolerance. Recalibration verifies your meter still reads accurately against NIST-traceable standards and, at Tensitron, includes completely dismantling, cleaning, rebuilding, calibrating, and certifying the meter. This protects product quality, safety, and your own quality-system compliance, since out-of-spec tension can mean rejected parts, failed audits, or field failures.
Technician servicing a Tensitron tension meter during calibration and repair

Tensitron recommends having most tension meters calibrated every 12 months to help maintain measurement accuracy and reliability.

Meters used heavily, exposed to demanding environments, or used for quality-critical measurements may require more frequent calibration. Your internal quality system, customer requirements, or audit procedures may also specify a different interval.

For calibration and service, visit Tensitron Calibration & Service.

An overdue meter may have drifted out of tolerance without any visible sign, so you could be accepting or rejecting work based on inaccurate readings. In regulated environments such as aerospace, medical, and ISO 9001 or AS9100 quality systems, an expired calibration sticker can also trigger audit findings and force you to quarantine or re-inspect prior work. Sending the meter in on schedule is far cheaper than discovering a measurement problem after the fact.

ISO/IEC 17025:2017 is an international standard for the competence of testing and calibration laboratories. Accreditation means the laboratory has been independently assessed for its calibration methods, technician competence, equipment, procedures, and quality controls.

For Tensitron customers, this provides confidence that calibration is performed using a controlled, documented process. Tensitron also uses standards traceable to NIST, providing a documented chain of measurement traceability.

Together, ISO/IEC 17025 accreditation and NIST traceability help support reliable measurements, quality-system requirements, and audit documentation.

Learn More About Tensitron Certifications & Traceability

Yes. All Tensitron calibrations are NIST-traceable and performed according to established, documented procedures using standards that are fully traceable directly to NIST. The calibration weights used range from zero to 4,000 pounds and are certified by a third party every five years, and the cables used are inspected at least annually against MIL-DTL-83420N, Table 1, with measuring equipment checked against traceable standards every 12 months. This unbroken traceability chain is what makes your readings defensible in audits and with customers.

Tensitron performs calibration in-house at its Pittsburgh facility. The work is handled by Tensitron’s own experienced technicians, with factory knowledge of how the instruments are designed, built, and serviced.

Calibration is performed under Tensitron’s ISO/IEC 17025:2017-accredited laboratory system using documented procedures and standards traceable directly to NIST.

Learn More About Tensitron Calibration & Service

A Tensitron calibration certificate provides documented evidence that the instrument was calibrated using standards traceable directly to NIST and according to Tensitron’s documented calibration procedures. The certificate provides a record of the calibration that can be retained for quality-system and audit documentation.

For more information about Tensitron’s calibration standards and traceability, visit Certifications & Traceability

There are three simple steps:

  1. Complete the online service form on the Calibration & Service page.

  2. Package your meter securely.

  3. Ship it to Tensitron, 135 Industry Drive, Pittsburgh, PA 15275.

No RMA number is required. Be sure to include your contact and return-shipping details so the service team can reach you with the estimate.

No. An RMA number is not required before shipping your Tensitron meter for calibration or service.

Complete the online service form on the Calibration & Service page before sending your meter so the service team has the necessary contact and instrument inform

Place the meter in its carrying case, if available, and pack it inside a sturdy shipping box with enough cushioning to prevent movement during transit.

Make sure the meter is protected from impact and include your contact information and return-shipping details with the shipment. Before sending it, complete the online service form on the Calibration & Service page.

Standard calibration and service turnaround is within two weeks. Expedited service is available within one week for an additional fee.

Turnaround time may vary if the meter requires additional repairs or replacement parts.

For service details, visit Tensitron Calibration & Service.

Standard calibration and service starts at $299 for digital tension meters and $329 for TR and ACM mechanical meters. Additional repairs, replacement parts, special services, or documentation may increase the final cost.

For pricing on your specific meter, Contact Tensitron to request a quote.

If a meter is sent to Tensitron and you choose not to proceed with the required service, the following policies apply:

  • Evaluation Fee: A $100 evaluation fee will be charged. The evaluation fee and return shipping must be paid before the meter is returned.

  • Storage Fee: A $25 storage fee applies if approval, either by purchase order or payment, is not received within 30 days of the estimate date. An additional $10 per week, partial or full, will apply after that.

  • Abandoned Meters: If no communication is received within six months of the customer receiving the estimate, the meter will be considered abandoned and may be discarded.

Recalibration checks the meter’s measurement accuracy and restores it to the required specifications before certification. Repair addresses physical damage, worn components, or other problems affecting the meter’s operation.

Tensitron’s standard service includes dismantling, cleaning, rebuilding, calibrating, and certifying the meter, so many issues can be corrected as part of the normal service.

If the meter is out of tolerance and requires additional parts or repairs beyond the standard service, Tensitron will provide the additional cost for approval before proceeding.

Yes. Tensitron calibrates and services many older and discontinued Tensitron models that are still in use. In most cases, technicians can evaluate, calibrate, and often repair legacy instruments, depending on the model, condition, and availability of service parts.

Before shipping an older meter, complete the Calibration & Service request or contact Tensitron with the model and serial number so the service team can confirm support.

Tensitron calibration and service are performed in-house at the Tensitron factory, not by a third-party calibration provider. The work is completed by the same team that designs, builds, and supports the instruments, using Tensitron’s documented procedures and NIST-traceable standards.

Authorized resellers can help coordinate service and shipping, especially for customers outside the U.S., but the instrument is ultimately serviced by Tensitron.

To start a calibration or service request, visit the Calibration & Service page.

No. Tensitron provides calibration and service only for Tensitron-manufactured tension meters. We do not calibrate or service tension meters made by other manufacturers.

For Tensitron meter calibration and service, visit the Calibration & Service page.

Yes. Tensitron maintains history logs of the instruments it calibrates and sells, and provides a NIST-traceable certificate with each serviced instrument that you can retain for your quality system. Because the work is performed under ISO/IEC 17025-certified procedures with traceability to NIST, these certificates are well-suited to support ISO 9001, AS9100, and similar audits.

Calibration and warranty coverage serve different purposes. Tensitron meters include a one-year warranty against factory defects, while Tensitron calibration and service work also carries a one-year service warranty.

Routine calibration helps maintain and verify measurement accuracy. If a meter is serviced by Tensitron, the completed service is covered for one year from the date of service.

For warranty or service questions, Contact Tensitron.

Yes. Tensitron sends automated email reminders before your meter’s calibration due date.

Reminders are sent:

  • 6 months before

  • 3 months before

  • 1 month before

  • On the calibration due date

These reminders help customers plan service in advance and avoid missed calibration intervals.

When your meter is due, visit Tensitron Calibration & Service to submit a service request.