Skip to content

Trek 370 Series


Precision, Non-Contact Electrostatic Voltmeter

The Trek® 370 employs an electrostatic field-nulling technique to achieve high DC stability and high measurement accuracy — regardless of probe-to-measured surface spacing changes. This permits highly accurate stationary or moving-surface measurement without fixed-spacing. An automatic gain feature eliminates the need for manual adjustment when changing probes or probe-to-surface distance. A precision voltage monitor provides low voltage representation of the measured electrostatic voltage for external monitoring purposes, or use as a feedback signal in a closed-loop system.


  • Automatic gain
  • Zero control
  • Voltage monitor output
  • Electrostatic field-nulling technique


  • Eliminate the need for manual adjustment with automatic gain feature
  • Operate on a benchtop or, with optional hardware, in a standard 19-inch rack
  • Utilize one-step, push-button zeroing


Operational temperature range (°C): 0 to 40
Measurement Range: 0 to ±3000 V
Measurement Accuracy (%): ±0.05%
Speed of Response (ms): <0.050

Technical Documentation


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.


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​.

Agreement Term Options

24/5 Support Available

Get Expert Advice From Our Engineers

We are committed to providing excellent customer service and technical support to our customers. With live chat and phone support, you can reach out to a qualified engineer for help at any time.
Get Support Now