p i c l t d .c o m
5
principles of operation
The SPY
®
Model PJM Pocket JeepMeter (voltmeter) is an instrument
designed to provide accurate and reliable measuring of the crest value
of high voltage non-sinusoidal waveforms. The output wave form
of holiday detectors typically has this type of shape and therefore
prevents the use of conventional RMS voltmeters.
The SPY
®
Model PJM enables the operator to measure pulse up to
20 kV.
The SPY
®
785 and 790 holiday detectors have pulse only output used
for inspecting tapes, extruded coatings, coal tar enamels and
sometimes thin film epoxy coatings and has a voltage range of
1 to 15 kV (785) and 5 to 35 kV (790) respectively.
