PIE 901 Wireless Diagnostic Calibrator Practical Instrument Electronics


SKU: PIE 901


PIE 901 Wireless Diagnostic Calibrator Practical Instrument Electronics

PIE 901 Datasheet (PDF)

New PIE 901 milliamp, voltage & pressure calibrator – Find Hidden Loop Problems!

PIE 901 Features:

  • Calibrate Milliamp Instruments
    Source 0.000 to 24.000 mA & -25.00 to 125.00% of 4-20 mA
    Read 0.000 to 24.000 mA & -25.00 to 125.00% of 4-20 mA
    Simulate 2-Wire Transmitter, Power & Read Transmitters
    Accurate to ±(0.01% of Reading + 0.002 mA)


  • Calibrate Voltage Instruments
    Source 0.000 to 24.000 VDC
    Read -60.000 to 60.000 VDC
    Accurate to ± (0.02% of Reading + 0.01% Full Scale)


  • Calibrate pressure instruments with optional pressure modules
    Dual display of milliamp and pressure for calibration of I/P or  P/I transducers and pressure gauges
    Choose from a wide selection of pressure modules along with hand pumps and tubing kits


  • Blue tooth functionality (for use with future PIE wireless pressure modules)


  • Large Color Display with color coded menus for simplified setup


  • Locate Loop Current Leakages
    Automatic indication of Loop Current and Leakage Current. Measure ground current leakage from faulty wiring, flooded conduit and corrosion bridges. Leakage typically appears as a Zero Shift and helps you decide if the transmitter needs calibration or if there is a problem in the loop wiring.


  • Faster Calibrations
    Three output EZ-CHECK switch
    2 speed EZ-DIAL
    Stepping & Ramping


  • Includes Rubber Boot, Deluxe Hands Free Carrying Case & Test Leads


  • Optional Accessories
    USBC charger (020-0104)
    NiMh Rechargeable AA Batteries 4 pack (020-0105)
    Magnetic hanging strap (020-0236)

Find Hidden Loop Problems with Ground Leak Detection

If you find a loop where the transmitter is calibrated correctly but all the readings elsewhere in the loop have a fixed offset this is due to a Zero Shift. This zero shift is typically caused by some current in the loop bypassing the transmitter. This might be caused by ground faults, moisture or corrosion.

Turn on Ground Leak Detection and use the PIE 901 to power up the loop. Any current that isn’t controlled by the transmitter or other current control element will be indicated as leakage on the calibrator’s display.

Typical problem found with Loop Diagnostics

 Here is a loop where a technician has just recalibrated the transmitter but the control room still sees a problem. The problem started just after a rainstorm.

Using a PIE 901 to power the loop the technician detects a leakage of 0.51 mA – the same offset seen in the control room. He walks the loop and opens a junction box releasing a stream of water. The loop is again in control. Clink on the link below to see a video demonstration of Loop Diagnostics in action.

Additional information

Weight 3 lbs
Dimensions 10 × 7 × 8 in

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