In many applications where the Clavis belt tension gauging equipment is employed it is demanded by the Quality Assurance procedure that all the gauges used should have a calibration check performed at periodic intervals. Although all Clavis equipment may be returned to the manufacturers for the issue of a certificate of calibration, many Q.A. procedures require that a daily or weekly check be made.
The Clavis calibrator is a portable unit which drives a vibrating transducer at precise frequencies within the range of 30 to 600Hz. The transducer is inserted between the sensing head of the belt tension meter and a comparison between the measured frequency and the driving frequency is made. The calibrator automatically steps through the frequency range in 50Hz intervals. All Clavis calibrators are issued with a certificate of calibration traceable to National standards.
The calibrator and vibration transducer are supplied in a leather type carrying case. The unit is powered by 4 standard AA size alkaline batteries.
