National torque standard available for calibration
A
National Physical Laboratory product story
Edited by the Engineeringtalk editorial team
Feb 7, 2006
NPL's 2kNm torque machine - the UK's first national torque standard - is now available for use.
NPL's 2kNm torque machine - the UK's first national torque standard - is now available for use.
The machine will be used to calibrate transducers and to disseminate the unit of torque within industry.
The 2kNm lever-deadweight torque machine is designed with a vertical torque axis and generates a symmetric pure torque via identical weight stacks located at either end of a lever arm.
Both clockwise and anticlockwise torques can be applied in the range 1Nm to 2kNm, with an uncertainty of +/-0.002%.
The machine makes use of several novel and innovative subassemblies including boron fibre tapes and a twin beam carbon fibre lever arm both developed within NPL's Materials area.
A turnaround time of two weeks is offered for all torque calibrations.
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