Torque Transducer Calibration Services:
Accredited calibration services are available for torque transducers of virtually any manufacture (subject to ability to mount the unit into our calibration stands); within the ranges of 10 ozf-in to 4,000,000 lbf-in. Different types of calibrations are offered as described below:
- 3 point calibration
Unit is loaded and data taken at three points (zero, half full scale and full scale) in increasing load direction, and one point (half full scale) in the decreasing load direction. Loading and data are taken in both clockwise (CW) and counterclockwise (CCW) directions.
- 10 point calibration
Transducer is loaded and data taken at ten points in both increasing and decreasing load directions. (Actual number of points may vary based upon available weight increments). Loading and data will be both in the CW and CCW directions.
- 3 point calibration, as found/as left
Three point calibration as described above, performed twice – first with the unit in as received condition. Any necessary repairs or adjustments are made to the unit and then a second, as left, three point calibration is performed. Data is provided for both the as found and as left conditions.
- 10 point calibration, as found/as left
Two ten point calibrations are performed, first with the unit as received, the second after any repairs, adjustments or modifications are performed. Both as found and as left data are provided.
For torque transducers of S. Himmelstein and Company manufacture only:
- 3 point calibration with temperature compensation
Prior to calibration, the unit is cycled through elevated temperatures, +75 to +175 deg F, to verify temperature performance of the strain gage bridge. If necessary, compensation techniques will be applied to bring results into acceptable criteria. Transducer will also be run at its’ maximum rated speed for 30 minutes to confirm no output variations caused by speed. Finally, the three point calibration will be performed as described above.
- 10 point calibration with temperature compensation
Temperature testing and speed run and described above and then a complete ten point dead weight calibration.
- 3 point calibration, as found/as left with temperature compensation
Three point calibration is performed with the unit in the as received condition. Temperature compensation and speed running are then performed. After any changes/modifications, an as left calibration is performed.
- 10 point calibration, as found/as left with temperature compensation
Initial as received ten point calibration performed, then temperature testing and speed run. After changes and modifications, as left ten point dead weight calibration is completed.
Speed (rpm) Calibration Services:
Accredited speed calibrations are available for speeds from 900 rpm to 10,000 rpm. Measured speed is compared to that from a precision/high resolution encoder. For the standard speed calibration, three data points are taken; 900 rpm, maximum rated rpm of the transducer, and one point halfway between.
Load Cell Calibration Services:
The Himmelstein laboratory scope of accredited services includes force calibrations from 5 lbf to 500 lbf. For universal load cells, unit is loaded 10 points up and 10 points down in both tension and compression.
mV/V Calibration Services:
Precision calibration of mV/V output devices is available from 0.5 mV/V to 5.0 mV/V.
Sample Calibration Certificates:
Various samples of calibration certificates/data are available for download as follows: