The Trek Model 368A High-Speed Electrostatic Voltmeter provides precision noncontacting measurement of the surface voltages associated with electrostatic imaging processes as employed by the electrophotographic reproduction and laser printing industries. Highly accurate electrostatic voltage measurements are also associated with applications such as photoreceptor research and semiconductor processing. The Model 368A is used in research and development applications and to measure electrostatic potentials on objects or surfaces such as polymer, film, fabric, and paper.
The miniature sensor probes utilize a patented dual chopper design. This design provides high-speed, DC stable measurements with exceptional low noise and drift performance in wide temperature range conditions, under high humidity, and even in the presence of contaminating particulates. Sensor probe options include standard or high-temperature probes with either an end-viewing or side-viewing orientation.
The voltage of moving or stationary surfaces can be easily measured with high accuracy over a wide range of sensor probe to measured surface spacings. The noncontacting measurement ensures that no charge transfer will take place to modify or destroy the actual data.
A user selectable dual range precision voltage monitor provides a low-voltage replica of the measured electrostatic voltage for external monitoring purposes or for use as a feedback signal in a closed loop control system.
Rack mount options are available to permit up to four independent measurement channels in a standard full rack or for compact bench top operation.
All specifications are with a probe to surface separations of 2 mm, ±1mm.
Speed of Response (10% to 90%)
Voltage Monitor Output
Model Ordering Information
Item /Part Number (Add the suffix L for 90 to 127 V AC operation and the suffix H for 180 to 250 V AC operation.)
Probe-to-Surface Separation (recommended)
Standard Resolution Probes
High Temperature (to 60 °C)
Probe Ordering Information
Voltage Monitor Connector
AC Line Cord Receptacle
TREK, INC. certifies that each Model 368A is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards. A Certificate of Calibration accompanies each instrument when it is shipped from the factory.
All specifications are subject to change.