PIE 850 Multifunction Process Calibrator

The PIE 850 Multifunction Process Calibrator is far more than a standard calibrator—it is a complete loop diagnostic and troubleshooting platform. Designed for technicians who need to find problems others cannot, the PIE 850 combines eight single-function calibrators, transmitter power supply, and patented Loop Diagnostic technology into one rugged handheld instrument.

With support for 4–20 mA and 10–50 mA loops, the PIE 850 is uniquely suited for industrial control systems, valve positioners, and legacy applications that demand higher loop currents. Its LoopScope™ feature allows technicians to simultaneously view current, voltage, and resistance, making hidden wiring, power, and loading problems instantly visible.

Features and Performance

• Patented Loop Diagnostic Technology
  Detects hidden ground faults, moisture intrusion, corrosion bridges, and current leakage that standard calibrators and multimeters cannot identify.

• LoopScope™ – See the Entire Loop at Once
  Simultaneously displays loop current, DC voltage, and total resistance to diagnose power supply limitations, overloaded loops, or failing devices.

• True 10–50 mA Loop Support
  Internal 40 V loop supply drives high-current transmitters and valve positioners that 24 V calibrators cannot power correctly.

• High Accuracy Calibration
  Accuracy of ±0.02% of reading + 0.01% full scale, suitable for demanding process environments.

• Comprehensive Signal Coverage

  • mA (4–20 & 10–50 mA)

  • DC volts & millivolts

  • Frequency up to 20.000 kHz / 2000 CPM

  • Thermocouples (14 types)

  • RTDs (9 types)

  • Resistance & continuity

  • pH simulation (0–14 pH)

  • Optional pressure modules

• RTD & Thermocouple Calibration in Temperature Units
  Direct °C/°F calibration—no tables, no decade boxes, no conversions.

• EZ-DIAL & EZ-CHECK™ Controls
  Instantly set precise values or recall three stored outputs, with automatic stepping and ramping.

• Transmitter Power & Measurement
  Powers and measures 2-wire transmitters simultaneously, including HART® transmitters (4–20 mA).

• Backlit Display & Field-Ready Design
  Easy visibility in dark plant environments with clear connection diagrams shown on screen.

Why You Should Buy It

• Diagnoses hidden loop problems before replacing instruments

• One tool replaces multiple single-function calibrators

• Ideal for 4–20 mA and 10–50 mA industrial loops

• Saves time during commissioning, maintenance, and shutdowns

• Includes calibration certificate and 3-year warranty

FAQ – PIE 850

Q: What makes the PIE 850 different from other multifunction calibrators?
A: The PIE 850 includes patented Loop Diagnostics and LoopScope, allowing it to find leakage, ground faults, and loop loading issues that other tools cannot detect.

Q: Does it support 10–50 mA control loops?
A: Yes. The PIE 850 is specifically designed to source, measure, and power 10–50 mA loops with an internal 40 V supply.

Q: Can it power 2-wire transmitters while measuring output?
A: Yes, it can power and measure transmitters simultaneously, including HART® transmitters in 4–20 mA loops.

Q: Is it suitable for legacy and modern instruments?
A: Absolutely. It is compatible with PLCs, DCS, smart transmitters, and legacy devices.