Products > ESD > Electrostatic Voltmeters for ESD

Trek Model 541A
Non-Contacting Electrostatic Voltmeter

  • Measurement Range:
    • Model 541A-1:
    • Model 541A-2:
  • Measurement Accuracy:
  • Alphanumeric LCD Display:
    ±1 kV DC or peak AC
    ±100 V DC or peak AC
    Better than ±1% of full scale over a probe-
    to-surface separation of 2.5 mm ±1 mm
  • 20 x 4 characters

The Trek Model 541A Electrostatic Voltmeter (pictured with the Model 541PR-S probe) provides accurate non-contacting measurements of the electrostatic surface voltage associated with EOS/ESD processes. The instrument is configured with a miniature electrostatic field chopper probe that can be remotely located and easily positioned within process equipment to provide highly accurate, non-contacting, DC-stable, spacing-independent voltage measurements in either ionized or non-ionized environments. A 20x4 alphanumeric LCD screen displays the present measured voltage, the positive peak voltage, the negative peak voltage and additional menu information.

Typical Applications Include
  • Semiconductor
  • LCD
  • Electronic assembly
  • ESD-sensitive processes
Features and Benefits
  • Chopper probe is DC-stable with or without incident air flow
  • Drift-free measurements
  • LCD screen displays present voltage and holds the most positive and negative values
  • Visual and audible alarms activate when the preset voltage threshold levels are reached
  • Voltage monitor output for remote monitoring or control
  • USB and RS-232 serial ports
  • NIST-traceable Certificate of Calibration provided with each unit
  • Optional Walking Test Adapter Kit available

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