Knick has extended its range of high-voltage isolators, adding devices capable of True RMS voltage measuring. VariTrans P 40000 TRMS (true root mean square) units correctly measure even distorted AC signals at high voltage levels. While simple AC/DC transmitters measure mean values calibrated to purely sinusoidal quantities, VariTrans P 40000 TRMS measures true effective values, and can therefore correctly analyse even distorted sinusoidal and pulse-shaped signals. Due to a maximal crest factor of 5, the series has a much wider measuring range than conventional amplifiers. The units process all common power frequencies. The calibrated switching of measuring ranges is a unique feature of VariTrans P 40000 TRMS: 16 input/output signal combinations can be selected using a rotary coding switch on the device front.
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