Test benches for the automatic calibration of torque wrenches

Key Benefits Tests according to ISO 6789 Test range 0.5 Nm - 3000 Nm (0.4 ft.lb. - 2211 ft.lb.)  Modular system Calibrated, traceable to national standards Fully automatic test procedures

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Centerpiece of the test bench is the multi range transducer. Especially designed for testing torque wrenches, this bench makes
it possible to test over the range from 0.5 - 30 Nm (0.4 - 22 ft.lb.), 2 - 300 Nm (1.5 - 221 ft.lb.), 5 - 1000 Nm (3.7 - 737 ft.lb.) or
500 - 3000 Nm (370 - 2211 ft.lb.) with one transducer. The maximum tolerances are less than +/- 1% of the indicated measurement.
Hence the test bench satisfies the requirements of ISO 6789 without the tester having to change the transducer for the particular
measurement range.

The drive units are available in four different sizes. Up to two drive units can be connected to one measurement and control unit.
The measurement and control unit operates with or without PC connection. Only the target value required is entered via the
keyboard in direct operation, i.e. without PC connection. The unit itself automatically determines all other parameters such as
limits, overload, rotational speed measurement range etc.
When connected to a PC it is also possible to manage the torque tools and compile test certificates automatically. 
The test procedure can be stored individually for each torque wrench. The test data is recorded automatically so that reminder
lists of tools due for testing can be produced.

The automated test sequences and procedures offer all possibilities:
- continuous testing (e.g. for supplier appraisal)
- testing to ISO 6789
- compiling documentation meeting the requirements of ISO 9000
- rapid and efficient testing without incurring changeover times.

Mobile version of a test bench for torque wrenches up to 300 Nm.   Torque wrenches can be calibrated on-site, according to ISO 6789.

Drive units with multi-range transducers

Measurement and control units