Tool Repair, Calibration, and Certification
Advanced Witness Series, Inc. maintains a torque tool repair, calibration,
and certification lab at its facility in San Jose, California. Our
calibration lab is equipped to work with all types of torque tools,
starting at 0.1 ozf.in. through large multipliers and hydraulic wrenches
at 25,000 Lbf.ft.
In addition, we are able to recalibrate and certify all types of
torque testers, including both mechanical and electronic units. AWS
also maintains a Quality Assurance Program which meets or exceeds
the requirements of MIL-STD 45662. All testers are returned with
certificates traceable to NIST, with as-found and as-left data. Upon
request, NIST certification on torque wrenches can be provided.
Our Primary Standards are designed and manufactured to exacting specifications.
Our arms are radiused to eliminate cosine error. The total measurement
uncertainty of our primary standards, weights, and arms is ±0.025%. This makes them accurate enough to certify analyzers with accuracies of ±0.1% in both clockwise and counterclockwise directions.
Although primarily designed for electronic torque transducers with
female square drives, these arms and weights can be used to test
all types of torque analyzers, such as mechanical testes, flange
mounted electronic transducers, and rotary transducers.
In addition to arms and weights, we maintain a full range of torque
transducers for any use, and a full repair facility. From a simple
calibration, to strain gauge placement or board-level repairs, we
can help with your calibration needs.