The DCM R series of digital clamp meters have a four digit L.C.D. and are available in different versions for maximum currents of 200 A, 1000 A and 2000 A. They feature autoranging and auto-zeroing and can measure a.c., d.c., pulsed and mixed currents. Additional functions include the measurement of voltage, resistance, continuity and a diode test. The overall accuracy of 1,3% of the measured value has been achieved by utilising the latest microprocessor technology, plus the use of a true RMS measuring technique. This accuracy even applies when harmonics or complex waveforms are present.

The clampmeters have additional ranges of 400 V, 600 V, 400 ohm, 4 k-ohm and allow diode tests as well as continuity tests with an integrated buzzer. Simply by pushing a button, it is possible to freeze the last value measured or to display the peak value on the four digit 12 mm high liquid crystal display. The analog outputs of this DCM series can be connected to an oscilloscope, chart recorder, datalogger or other measuring/recording equipment. A true RMS output is also available.

Advanced jaw design means that the clampmeters’ accuracy is not actually affected by external magnetic fields or off-center conductor positioning. Utilisation of Hall Effect technology ensures a broad flat frequency response resulting in optimum accuracy even when harmonics are present.

The compact size of the instruments gives the user access to constricted locations. The jaw has a large aperture of 55 mm and is able to accommodate conductors with diameters up to 50 mm. The tactile barrier indicates to the operator a safe working distance for his hand to be from the live uninsulated conductors, providing added confidence when making measurements in hazardous voltage areas.