Calibration unit for hand torque wrenches - SCHATZ - #1

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SCHATZ AG Tel. +49 (0)2191/698-0 www.schatz.ag 2003 EQS 5366_e P. O. Box 11 06 69 Fax +49 (0)2191/60023 info@schatz-mail.de D-42866 Remscheid Calibration unit for torque wrenches SCHATZ®CALITEST • calibration range 0.5 N·m.....3000 N·m • produces calibration certificates, tool histories and reminder lists • automatic calibration according to ISO 6789 • internationally recognised calibration standard for torque wrenches • multi-range sensor for rapid calibration Applications The test stand is equipped with the necessary technical measuring capabilities and drive methods for the conduct of tests to ISO 6789 or others. The user can also program his own test procedures as desired and conduct tests and calibrations automatically. The ISO 6789 test procedure distinguishes between torque wrenches with pre-set release and those with torque indicator and calculates a tolerance of 4 % or 6 % according to class, type and range. Calibration must be undertaken after every 5000 measurements and the measurement uncertainty of the calibration unit may only be max. 1 % of the reading. The ambient temperature is specified at 18°C to 28°C and the test comprises five measurements on 80% of the target data which must be obtained within 1 to 4 seconds. Calibration is carried on approx. 20 %, approx. 60 % and 100 % of the measurement range with increasing force and the adjustable wrench may only be adjusted upward from the lower setting. Description The core of the test stand is the multi-range sensor. Specially developed for the calibration of torque wrenches, it provides for testing in the range of 5 N·m to 1000 N·m (or 2 N·m to 300 N·m, 0.5 N·m to 30 N·m or 100 N·m to 3000 N·m) using one sensor. The deviations are less than 1 % of the reading shown. The calibration unit thus fulfils the requirements of ISO 6789 without the tester having to change the sensor for the relevant measurement range. The drive units can be supplied in four different sizes and up to two drive units can be connected to one measuring and control unit. This provides a maximum test range of 0.3 N·m to 1000 N·m or 5 N·m to 3000 N·m. The CEUS 8.0 PC software can be supplied as a stand-alone or network version. Torque tools are monitored automatically in the test scheme and calibration certificates are produced according to the client's wishes.