Trek Model PD06078 4-channel electrostatic voltmeter

Trek Model PD06078 electrostatic voltmeter (ESVM) is a 4-channel voltage measuring instrument that is suitable for monitoring critical operations associated with semiconductor, LCD, electronic assembly and other processes where static charge accumulation poses a threat to production yields or product quality.

The device contains four electrostatic voltmeters in a single enclosure. Each channel features a measurement range of 0 to ±10 kV and accuracy better than 5% reading plus ±0.2% of full scale over the probe to surface separation distance of 15 to 30 mm.

Each channel utilises a DC stable electrostatic field chopper probe which can be remotely located and easily positioned within process equipment to provide highly accurate, non-contacting, spacing-independent voltage measurements in either ionised or non-ionised environments.

Two types of probes are available with the device: a side viewing-type probe and a 45° orientation-type probe. One digital panel meter display (DPM) provides monitoring of individual channels through a switchable rotary switch. A holding fixture is used to position the probe’s sensing aperture relative to the measured surface. The instrument’s design improves noise and drift performance, both in the presence of contaminating particulates and under conditions of high humidity and wide temperature ranges. A voltage output monitor and a 4-20 mA current loop output can provide additional signal interfacing to facility monitoring equipment.