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Trek P0865 Series


High-Sensitivity, DC Stable, Precision Electrostatic Voltmeter

The Trek® P0865 employs a field-nulling technique for non-contacting voltage measurement. It achieves DC stability and high accuracy even if the probe-to-surface spacing changes. This permits accurate measurements of either stationary or moving surfaces without the need for fixed spacing. A precision voltage monitor provides a low-voltage replica of the measured electrostatic potential for monitoring, or use as a feedback signal in a closed-loop system. And probe assembly includes a sensitive electrode and preamplifier, which is driven to the same potential as the measured value to eliminate arcing therebetween. A three-meter cable permits remote probe positioning. 


  • Precision voltage monitor output
  • Zero control for offset nulling
  • Easy-to-read LED display
  • High temperature probes available
  • Field nulling technique


  • Utilize patented probe design to eliminate the need for close tolerance components
  • Improve noise and drift performance
  • Operate on a benchtop, or, with optional hardware, in a standard 19-inch rack
  • Use for various research and industrial applications
  • Accurately measure stationary or moving surfaces


Operational temperature range (°C): 0 to 40
Measurement Range: 0 to ±10000 V
Measurement Accuracy (%): ±0.1%
Speed of Response (ms): <200, <5


Trek Non-Contacting Voltmeter Probes

We offer an assortment of probes with multiple views, shapes, and aperture sizes available. You can also choose from high temperature and resolution probes for extreme temperatures and critical measurements.

Technical Documentation


Calibration and Alignment

Advanced Energy has the tools and processes to ensure your equipment continues to meet its original specifications.  Our products are calibrated at global AE service sites with proprietary technology designed to exceed industry standards​.

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