• Trek Model 520 Series Hand-Held Non-Contacting Electrostatic Voltmeters

    Trek Model 520 Series Hand-Held Non-Contacting Electrostatic Voltmeters


    The Trek Model 520 (±2kV) and Model 523 (±20kV) Hand-Held Electrostatic Voltmeters provide accurate, noncontacting measurements of electrostatic surface voltage for ESD applications in either ionized or non-ionized environments.
    These two voltmeters utilize a measurement technique that overcomes the disadvantage of the typical hand-held field-meter by providing surface voltage measurements which are essentially independent of the sensor probe-tomeasured surface spacing.
    Model 520 is available in two versions. The 520-1 has a digital meter to display the measured voltage. The 520-2 has an analog output monitor in addition to the digital display. This analog output monitor can be used to record the measured voltage or to view it on an oscilloscope.

    • Features and Advantages
    • Specifications
    • Applications

    ◆ Characteristic and Advantage


    ○ Accurately measures surface voltage at a wide range of spacings

    ○ No need to maintain a fixed spacing

    ○ Chopper stabilized for drift-free operation in ionized environments

    ○ NIST-traceable Certificate of Calibration provided with each unit

    ○ CE compliant


    Trek Model 520/523
    Measurement Range 0 to ± 2 kV DC
    Measurement Accuracy Better than ± 5% of full scale over the entire recommended probe-to-surface separation range of 5 mm to 25 mm
    Speed of Response (10% - 90%) (520-2 Voltage Monitor Output) Less than 25 ms for a 0 to ± 2 kV input step change

    Model 523
    Measurement Range 0 to ± 20 kV DC
    Measurement Accuracy: Better than ± 5% of full scale over the entire recommended probe-to-surface separation range of 30 mm to 60 mm
    Sampling Rate 2.5 readings per second

    ◆ Applications



    • Measurement of electrostatic surface charge build up
    • Manufacturing processes
    • Electronic assembly testing
    • Semiconductor material testing
    • Dissipative material testing
    • Automotive electronics testing
    • ESD Auditing and troubleshooting