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PIE Model 134 Milliamp Loop Calibrator


The Model 134 Milliamp Loop Calibrator from Practical Instrument Electronics (PIE), brings full size capability to a pocket sized instrument.

You can check, calibrate and measure all your current signal instruments in a 4 to 20 milliamp DC loop and easily calibrate recorders, digital indicators, stroke valves or any instruments that get their input from a 4 to 20 mA loop.

  • Calibrate Milliamp Instruments
    Source & Read 0.00 to 24.00 mA & -25.00 to 125.0% of 4-20 mA
    Simulate 2-Wire Transmitters; Power & Read 2-Wire Transmitters
    Selectable 250 Ω resistor for HART compatibility
  • Calibrate with Confidence
    Accurate to ±(0.05% of reading at 0.01 mA)
  • Compact & Affordable
    Pocket sized with built-in belt clip & attached test leads
    Includes two “AA” batteries
  • Faster Calibrations
    Instantly select three outputs with EZ-CHECK switch & two speed EZ-DIAL knob



An experienced manufacturer of calibration
equipment for the process industry.