RTSX-A Rotary Torque & Angle Sensors

The RTSX-A rotary torque and angle sensor is an instrument for measuring dynamic torque with fastening applications. The rotary torque sensor is ideal for torque auditing programs and verification processes when paired with a torque analyzer. Angle monitoring sensors can be used to measure the rotation angle, joint rate & breakaway torque directly on the fastener.

Connect a rotary torque sensor between an electric or pneumatic tool, and the assembly application. The sensor quickly attaches to a power tool's drive without interfering with its ability to fasten a screw or bolt. The sensor measures torque under joint conditions, returning the most accurate results possible. The sensor is also compatible with measuring hand tools like torque wrenches and screwdrivers.

RTSX-A sensors must be used with a torque analyzer and easily connect to Mountz LTT and PTT torque analyzers via cable using plug-and-play ARC II technology.

Companies must control torque to ensure product quality, safety, and reliability. Regularly auditing and validating tooling calibration is essential for reducing errors in your assembly process and preventing product defects for all manufacturers.

Measuring Torque for Quality Control

  • Test and validate power and hand tools to ensure proper torque is applied and reduce manufacturing errors on your assembly line.
  • The sensor has encoders for measuring the rotation angle when a fastener is turned.
  • Easily verify that a tool’s in calibration or setting to validate tool performance.
  • Conduct a torque auditing program to detect loose fasteners or any signs of joint relaxation.
  • Plug & Play with Mountz torque analyzers. Features ARCII technology, an instant auto-recognition system of the sensor connected to the LTT or PTT.
  • ISO 17025 calibration certificate included with analyzer purchase.


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Select the model with the correct input and output drive for the application. Models ending with "-H" are 1/4" hex drive models.

This is the stand-alone accuracy statement for the RTSX-A torque and angle sensor. There is system accuracy when the torque sensor is coupled with a Mountz torque analyzer. Review the system accuracy listed with each torque analyzer (PTT or LTT).

WARNING! Not recommended for impact wrenches.