Electrostatic Products

Monroe Isoprobe 244AK

Non-Contacting Electrostatic Voltmeter for Measuring Surface Potential in the Range of ±2600 Volts

Advanced Energy's Monroe 244AK Isoprobe® electrostatic voltmeter measures surface potential in the range of ±2600 volts without contacting the measured surface.

  • 200:1 output ratio 
  • High-accuracy (0.1%)
  • Specialty high-resolution probes

 

  • Overview
  • Technical Specs
  • Documents
  • Service & Support
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Overview

The Monroe Isoprobe® 244AK electrostatic voltmeter measures surface potential in the range of ±2600 volts without contacting the measured surface. It features a 200:1 output ratio and high-accuracy (0.1%), drift-free measurements that are almost fully independent of probe-to-surface separation.

Side- and end-viewing probes accommodate various mounting requirements. Specialty high-resolution probes allow the 244AK to resolve spot diameters as small as 1 mm. Probes include air purge capability to prevent ingress of particulate.

Benefits

  • Measure surface potential without physical contact
  • Obtain drift-free measurements that are almost fully independent of probe-to-surface separation
  • Use side- or end-viewing probes for various mounting requirements

Features

  • Features a 200:1 output ratio
  • Accuracy better than 0.1% at almost any probe-to-surface spacing
  • Specialty high-resolution probes to resolve spot diameters as small as 1 mm
  • Performance

    Measurement Range

    ±2600 volts, auto polarity

    Measurement Accuracy

    0.1%, ±0.003%/°C over +20 to +40°C range (at recorder output). Useable to +50°C.
    See datasheet for additional notes regarding accuracy.

    Speed of Response

    For typical input step

    < 3 ms (10% to 90%)

    For 1 kV step

    < 2½ ms (10% to 90%)

    For 2kV step

    < 3½ ms (10% to 90%)

    For 3kV step

    < 4 ms (10% to 90%)

    Settling Time

    Less than ±2 V

  • Mechanical

    H x W x D

    10 x 21.8 x 35.6 cm (4 x 8½ x 14 in)

    Weight

    3.2 kg (7 lb)

    Output Filter

    Bessel low pass filter with 0.7 ms constant delay

  • Electrical

    Power Requirement

    100, 115, 230 VAC, ±10%, 50/60Hz, 15 watts

    Recorder Output

    Compressed analog output is input divided by 1000 (optional Model 244AK has divide by 200) for external loads greater than 1KΩ. Output connector is BNC.

  • Typical Applications

    • Electrophotographic measurements
    • Radiation effect studies
    • Electret research
    • Electric field studies
    • Process monitoring and control
    • Integrated circuit manufacturing and handling

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Product Support

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Inside the U.S.: 1.800.446.9167 (option 2)
Outside the U.S.


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