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Electrostatic Voltmeter
Model 347 - TREK, INC. (TREK)
The Trek Model 347 is a precision DC stable electrostatic voltmeter for making noncontacting surface voltage measurements in the range of 0 to 3 kV DC or peak AC. Industrial applications include surface voltage measurements of photoconductors or dielectric surfaces, charge monitoring in semiconductor production, or measuring electrostatic potentials on film, polymers, and paper.