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Monroe 257D Series


Portable, Battery-Operated Fieldmeter for Performing Static Surveys

The MonroeTM 257D is a portable, battery-operated fieldmeter for performing static surveys or for use as a diagnostic tool when troubleshooting problems caused by static build-up. The instrument offers a chopper-stabilized measurement technique that is drift-free, even in ionized environments. An AC adapter is provided to recharge the batteries and to operate the Monroe 257D during longer-term tests.


  • Intrinsically safe sensors approved for use in hazardous locations with approved IS barriers
  • Unmatched accuracy, stability, and versatility
  • Loop control for consistency in electrostatic tacking of materials
  • Included AC adapter for recharging batteries or using during longer-term tests


  • Use the remote probe for easy monitoring of hard-to-reach locations (up to 1000 ft)
  • Utilize the recorder output for unattended monitoring
  • Select either battery or line operation (with AC power module included)
  • Measure drift-free with chopper stabilization in ionized environments


Operational temperature range (°C): 25, ±10
Measurement Range: ±20000 V
Measurement Accuracy (%): 0.05
Speed of Response (ms): 250


Monroe Fieldmeter Accessories

Accessories compatible with Monroe fieldmeters.

Technical Documentation

Title Type
Monroe 257D Data Sheet (146 KB) Data Sheet


Calibration and Alignment

Advanced Energy has the tools and processes to ensure your equipment continues to meet its original specifications.  Our products are calibrated at global AE service sites with proprietary technology designed to exceed industry standards​.

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