Hand-Held Electrostatic Voltmeter

  • Product No:821HH
  • Manufacturer:Trek, Inc.

Trek’s Model 821HH Infinitron Hand-Held Electrostatic Voltmeter represents the next generation of contacting precision surface voltage measuring instruments, providing input characteristics far beyond the limits of any currently available hand-held voltmeter product.

The Model 821HH can easily measure the voltage level of both conductive and insulative objects and surfaces with virtually zero charge transfer to the measurement probe. This results in stable high accuracy voltage measurement capability for ESDsensitive devices.

Probe tip assumes the voltage level of the measured object’s surface as the tip approaches resulting in no current flow at the time of contact.

Battery or line operation

Easy to read LCD display

Records voltage, temperature and humidity with included sensor

Data graphing capabilities

NIST-traceable Certificate of Calibration provided with each unit

CE compliant


  • Measurement Range 0 to ±2 kV DC or peak AC

  • Accuracy

  • At the Voltage Monitor Output: Better than ±1% of full scale

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

  • Bandwidth (-3 dB): 1000 V p-p sine wave: better than 700 Hz

  • Input Characteristics Resistance: greater than 1 x 1014 W

                                      Capacitance less than 1 x 10-14 F

                                      Current less than 1 x 10-14 A

  • Stability Drift with Time (probe in free air): Less than 2 V/second

  • USB Data Rate: 300 ms