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  • Measure and read DC voltages
  • Calibrate recorders in live loops
  • Ranges: Up to 20V
  • Accurate to ±0.02%
  • Simulate pH probes into transmitters & analyzers
  • Measures up to 60 VDC
  • EZ-DIAL double click menu
  • Backlight easy-to-read display

The PIE 235 Process Voltage Calibrator checks, calibrates and measures voltage instruments. The 20V range has an extended span of up to 24V giving you a portable source for powering your loops. The PIE 235 has a pH simulator used to verify proper operation of pH devices before you place a probe into a calibrated buffer.

The PIE 235 can easily set any value with the adjustable DIAL plus store any three output settings for instant recall with the EZ-CHECK switch. 2, 3, 5 & 11 steps automatically increment output in 100%, 50%, 25% or 10% of span plus continuous ramp. Set step/ramp time to 5, 6, 7, 8, 9, 10, 15, 20, 25, 30 & 60 seconds.

PIE 020-0236 Magnet and Hanging Strap
Hang your PIE calibrator from racks, cabinets, and from pipes
In Stock

Application Notes

Here's how some of our customers used this product.

Calibrating Data Recorders

The Background: Our customer is a manufacturing facility that currently uses a number of data recorders to monitor processes throughout their facility. They seek a means to perform annual calibrations on these recorders.

The Problem: They currently have an older calibrator that is bulky and not reliable.

The Solution: We recommended the PIE 235 process voltage calibrator for this application. The PIE 235 allows the customer to preset three output settings, enabling them to verify 0, 50 and 100% of the recorder’s input. This allows the customer to quickly calibrate the recorders they have at a much faster rate.