Skip to Main Content
  • Instrumart
Instrumart logo
  • Products
  • Brands
  • Applications
  • Lab
  • Blog
  • Account
  • Email Us
  • 1-800-884-4967
  • What can we help you find?

    Can’t find what you’re looking for? Contact one of our engineers today. We’re open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
    • 1-800-884-4967
    • Email Us
    • Live Chat
  1. Multifunction Process Calibrators

PIE 235 Process Voltage Calibrator

Measure and read DC voltages, calibrate recorders in live loops, EZ-DIAL double click menu.

PIE 235 Process Voltage Calibrator
PIE 235 Process Voltage Calibrator
$1,209.00 $1,148.55

View Company Reviewsby Trustpilot
Part Number
  • PIE 235
Manufactured
  • By PIE Practical Instrument Electronics
Includes
  • FREE Ground Shipping
  • FREE Lifetime Tech Support
Availability
  • 1 in stock
Product Manual Product Specs
Questions?
Call 1-800-884-4967 or email sales@instrumart.com. Open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET.
Trustpilot

Overview

Features

  • 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
Instrumart logo

This is the recommended replacement for the following Altek Calibrators:

  • Altek 135 Process Voltage Calibrator
  • Altek 235 Process Voltage Calibrator

What's in the Box

  • NIST calibration certificate (no data)

Description

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.

Documents

Spec Sheets

  • PIE 235 Process Voltage Calibrator Datasheet PDF (470 KB)

Manuals

  • PIE 235 Process Voltage Calibrator Manual PDF (880 KB)

Application Notes and White Papers

  • Troubleshooting pH Instruments with PIE Calibrators PDF (209 KB)

Accessories

PIE 020-0236 Magnet and Hanging Strap
PIE 020-0236 Magnet and Hanging Strap

Hang your PIE calibrator from racks, cabinets, and from pipes.

In Stock
$24.00

Applications

Here's how some of our customers use 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.

Need Help? Call a Calibration engineer at 1-800-884-4967

We're open Mo-Th 8am to 5:30pm. Fr 8am to 5pm ET

Brynn O.S. headshot Brynn O.S.
Applications Engineer
3 years at Instrumart
Mike C. headshot Mike C.
Senior Applications Engineer
24 years at Instrumart
Shawn S. headshot Shawn S.
Senior Applications Engineer
30 years at Instrumart
Angelo S. headshot Angelo S.
Cal & Pressure Engineering Lead
6 years at Instrumart
Fabian M. headshot Fabian M.
Applications Engineer
Liam W. headshot Liam W.
Applications Engineer
2 years at Instrumart
Nate H. headshot Nate H.
Applications Engineer
Mark D. headshot Mark D.
Applications Engineer
13 years at Instrumart
John A. headshot John A.
Senior Applications Engineer
19 years at Instrumart
Brynn O.S. headshot Brynn O.S.
Applications Engineer
3 years at Instrumart
Mike C. headshot Mike C.
Senior Applications Engineer
24 years at Instrumart
Shawn S. headshot Shawn S.
Senior Applications Engineer
30 years at Instrumart
Angelo S. headshot Angelo S.
Cal & Pressure Engineering Lead
6 years at Instrumart
Fabian M. headshot Fabian M.
Applications Engineer
Liam W. headshot Liam W.
Applications Engineer
2 years at Instrumart
Nate H. headshot Nate H.
Applications Engineer
Mark D. headshot Mark D.
Applications Engineer
13 years at Instrumart

Recently Viewed

PIE 235 Process Voltage Calibrator
PIE 235 Process Voltage Calibrator
United States Canada Mexico
Shop
Products
Brands
Applications
Support
Customer Service
Ask a Question
Live Chat
Track Order
Fraud Prevention
Financing
Our Company
Blog
About Us
Contact Us
Jobs
Travel Information
Our Team
Privacy Policy
Accessibility Statement
Connect
1-800-884-4967
sales@instrumart.com
Instrumart
35 Green Mountain Dr
S Burlington, VT 05403 US
Mo-Th 8:00am to 5:30pm ET
Fr 8:00am to 5:00pm ET
Join Us on Facebook
Follow Us on X

Instrumart is a member of a family of industrial stores

Instrumart Compressor World Pump World BioPharm World Filtration World Motion World Qualitrol Engineered Solutions Wholesale Air Pipe
© Instrumart 2025

Family of Industrial Stores

Welcome to our family of stores, your go-to source for a wide selection of commercial and industrial products in the flow control and automation sectors. Each store features a curated range of specialized industrial solutions, with many items designed to complement each other, ensuring you can find everything you need for your specific application. Explore the stores below to discover our extensive product offerings for your business needs.

  • Instrumart

    Shop Industrial and Laboratory Instruments.

    Shop Now!
  • Compressor World

    Shop Compressed Air Equipment.

    Shop Now!
  • Pump World

    Shop Industrial, Water, and Waste Water Pumps.

    Shop Now!
  • BioPharm World

    Shop Sanitary Process Solutions and Products.

    Shop Now!
  • Filtration World

    Shop Industrial Filters.

    Shop Now!
  • Motion World

    Shop Motion Control and Process Automation Systems.

    Shop Now!
  • Qualitrol

    Shop Remanufactured or Repair Automation Products.

    Shop Now!
  • Engineered Solutions

    Shop Custom Engineered and Manufactured Systems.

    Shop Now!
  • Wholesale Air Pipe

    Shop Air Piping.

    Shop Now!