Expert, Precise Torque Calibration Services

What We Do

S. Himmelstein and Company provides accredited ISO/IEC 17025:2017 torque transducer calibration from 10 ozf-in to 4 million lbf-in (0.07 Nm to 452,000 Nm). The 4,000,000 lbf-in stand is one of only four worldwide that are accredited for calibrations above 1,000,000 lbf-in (113 kNm) and it has the lowest measurement uncertainty of any.

We have nine accredited stands that provide optimal measurement uncertainty and avoid queuing delays if using fewer stands. Torque calibrations are made for Himmelstein transducers as well as those from HBM, Honeywell, Lebow, Futek, AKO, Manner, Magtrol, Interface, GIF, Kistler, Lorenz, ETH, Sensor Developments, Sensor Data, Omega, Datum, Norbar, PCB and more.

Torque transducer calibration certificates summarizing results and certifying ISO/IEC 17025:2017 accreditation are always provided.  With our torque calibration services you get the best results from your torque sensors while complying with International Standards.

What Is Torque Calibration?

It is recommended that torque transducers be calibrated periodically to ensure their accuracy. This process involves comparing the measurement values of the equipment against a universally recognized standard of accuracy that has been predetermined. The purpose of this procedure is to make sure the instruments you use are performing within the manufacturer’s recommended tolerance. Without proper calibration, your equipment may not provide the accurate readings you need to keep your equipment running at its most effective and efficient. 

The Torque Calibration Process

There can be variations in the defined procedures for performing the actual calibration. They may be based on the manufacturers’ recommendations, relevant ANSI/ASME standards, federal requirements or customer requests. Regardless, they all require the application of a precise, known torque load to the sensor.  This loading can be generated through the use of a lever arm of defined length and the hanging of precise weights off of this lever arm.  Alternatively, the load can be applied to a lever arm using a hydraulic cylinder.  In this case, a precise reference standard transducer is required to accurately measure the applied load.  The specific process to calibrate these instruments may be different from case to case, the end result is the same — greater accuracy from the specified equipment. 

Our Accreditation

Himmelstein’s Torque Calibration Laboratory is accredited to ISO 17025:2017 by NVLAP, an arm of the NIST, lab code 200487-0. Select the links below for a copy of the NVLAP Certificate and Accreditation Scope.

Certificates of Conformance are available upon request from the factory.

Our Torque Tester and Calibration Capabilities

Calibration Services for Torque Transduces from Virtually Any Manufacturer

  • 10-point calibration
  • 10-point calibration, as found/as left

Calibration Services for Torque Transducers from S. Himmelstein and Company Only

  • 10-point calibration with temperature compensation
  • 10-point calibration, as found/as left with temperature compensation

Speed (RPM) Calibration Services

mV/V Calibration Services

Learn More About Our Capabilities

Torque Calibration Tools and Fixtures

  • Full-Scale Range 10 ozf-in to 400 ozf-in
    • Lever arm length: 4 inches
    • Best uncertainty: +/- 0.032%
    • Loads applied using dead weights
  • Full-Scale Range 25 lbf-in to 200 lbf-in
    • Lever arm length: 12.5 inches
    • Best uncertainty: +/- 0.032%
    • Loads applied using dead weights
  • Full-Scale Range 200 lbf-in to 2,000 lbf-in
    • Lever arm length: 25 inches
    • Best uncertainty: +/- 0.026%
    • Loads applied using dead weights
  • Full-Scale Range 2,000 lbf-in to 20,000 lbf-in
    • Lever arm length: 40 inches
    • Best uncertainty: +/- 0.029%
    • Loads applied using dead weights
  • Full-Scale Range 20,000 lbf-in to 100,000 lbf-in
    • Lever arm length: 100 inches
    • Best uncertainty: +/- 0.017%
    • Loads applied using dead weights
  • Full-Scale Range 100,000 lbf-in to 349,000 lbf-in
    • Lever arm length: 720 inches
    • Best uncertainty: +/- 0.087%
    • Loads applied using dead weights
  • Full-Scale Range 350,000 lbf-in to 4,000,000 lbf-in
    • Lever arm length: 50 inches
    • Best uncertainty: +/- 0.081%
    • Loads applied hydraulically, measured using high-precision load cell 

The Importance of Torque Transducer Calibration

The only valid way to verify operation and efficiency of motors, generators, compressors, pumps, transmissions and virtually any rotating machine is to accurately evaluate them when new and periodically verify performance thereafter. That can only be done with a properly sized and calibrated Torque transducer.  As a leader in torque calibration, sensor design and manufacture Himmelstein has the expertise and experience to correctly and expeditiously calibrate your torque sensors.  Fill out our Request for RMA (Return Material Authorization) form, including a description of the problem, before sending your equipment to Himmelstein for calibration or call today (1-800-MEASURE).