Electrostatic Products

Trek Infinitron 821HH

Contacting Hand-Held Electrostatic Voltmeter

Advanced Energy's handheld Trek Infinitron 821HH electrostatic voltmeter offers next-generation contacting-precision, surface-voltage measuring capabilities.

  • Battery or line operation
  • Easy-to-read LCD display
  • Records voltage, temperature, and humidity
  • Data graphing capabilities
  • No current flow at time of contact
  • Overview
  • Technical Specs
  • Documents
  • Accessories
  • Service & Support
  • Distributors


The Trek® Infinitron® 821HH hand-held electrostatic voltmeter offers far-reaching input characteristics, data graphing capabilities, and easy-to-read LCD. It can easily measure the voltage level of conductive and insulative objects surfaces with virtually zero charge transfer to the measurement probe. And this enables stable, highly accurate voltage measurements for ESD-sensitive devices.


  • Use in semiconductor, LED, MR head sensor, and other ESD sensitive applications
  • Operate using a battery or a line
  • Easily record voltage, temperature, and humidity
  • Set automatic shutoff for 5, 10, or 15 minutes


  • No current flow at time-of-contact, probe tip assumes the voltage level object’s surface
  • Voltage monitor output provides low voltage replica of the measured voltage
  • Less than 500 µS for an input step change of 1 kV
  • NIST-traceable calibration certificate provided with each unit
  • Easy-to-read LED display

Select specifications are shown below. Please see product data sheet for additional specifications.

  • Performance

    Measurement Range

    0 to ±2 kV DC or peak AC

    Measurement Accuracy

    • At the Voltage Monitor Output: Better than ±1% of full-scale
    • At the Voltage Display: Better than ±1% of full-scale, ±1 digit
  • Mechanical

    H x W x D

    240 x 140 x 52.5 mm  (9.5 x 6 x 2 in)


    1.13 kg (2.5 lb)

  • Electrical

    Power Requirements

    Internal NiMH battery or external 15 V @ 1 A supply / charger

    Battery Operating Time

    Greater than six hours of continuous operation

  • Typical Applications

    • Semiconductors
    • Materials research
    • Photovoltaics
    • LEDs
    • MR head sensors
    • Other ESD sensitive devices

Specifications are subject to change without notice. Not all options and accessories are available for all models and configurations. Dimensions listed generally refer to standard configurations and module bodies only. Please confirm technical specifications and customizations with a sales representative. Advanced Energy is not responsible for errors or omissions.


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Trek Infinitron 821HH Software

Trek Infinitron 821HH Installer and Firmware for Windows

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Product Support

U.S.: +1 800 446 9167
Asia: +86 29 8874 1895
China: 400 8899 130
EMEA: +44 800 032 1546
U.K.: 08000 321 546

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