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Monroe 177A Series


Accurate, Dependable Continuous Monitoring for Electrostatic Charge Build-Up Detection

The Monroeᵀᴹ 177A serves as a full-time, plant-wide automatic static build-up monitor. As static levels surpass a preset value, beyond which there may be a danger to personnel or possible disruption or destruction to the process or product, an initial warning is triggered and the process is allowed to continue. If the problem is rectified, the warning returns to a normal state. If the condition persists and the static level exceeds a second more crucial value, an alarm is activated and terminates the process until corrective action is taken and the system is reset.


  • Intrinsically safe sensor operation (with optional barriers) in explosive atmospheres
  • Accurate and drift-free measurement including in ionized environments
  • Provides analog outputs and control via RS232/485 and front panel PLC compatible using Modbus protocol fail-safe relay configuration


  • Detect static levels in as many as four locations up to 1000 feet away
  • Configure built-in dual level alarms programmable via front panel, PC, or PLC
  • Cascade up to 32 units via RS485 providing 128 sensor locations
  • Use the simple GUI interface for set-up and control Increase dependability with password security


Operational temperature range (°C): 15 to 45
Measurement Range: ±10000 V
Measurement Accuracy (%): ± 3%
Speed of Response (ms): 1000
Communications Interface: RS232/485


Monroe Fieldmeter Accessories

Accessories compatible with Monroe fieldmeters.

Monroe 177A Software

PC software and related documents for the Monroe 177A


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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