Contact Us:
(732) 765-0900



DigiVac Model 22W | Ideal Vacuum Gauge for Transmitting Vacuum Readings to PLC

  • PLC Vacuum Transmitter | Active gauge ideal for assembly line, manufacturing, or systems with PLCs.
  • Field replaceable vacuum sensor: can easily be switched out/no tools required
  • Includes RS232 and 5 Volt Analog output
  • For higher resolution at lower range, contact us for the added Linear by decade option.
  • Not included: Bright LCD display for local reading of vacuum pressure. If you need an in-line display on your vacuum gauge transmitter then choose the Model 22W-LCD
  • Applications: freeze dryers, refrigeration systems, assembly lines, vacuum ovens, laboratory
  • This Vacuum Gauge is available with multiple sensor options: Agilent 531 NPT, Agilent 536 KF16, Agilent 536 NPT, Agilent 536 KF25
  • The Agilent 536 Vacuum Sensor is a thermocouple sensor with an integrated baffle. It is a welded 304 steel version of the 531 sensor with an additional baffle to greatly extend the sensor life when exposed to condensable gases.


  • Active Gauge—vacuum transmitter measures full range of rough vacuum pinpointing either gross or fine process errors or leaks |Measures from 1 micron to 760,000 microns (760 Torr) or atmosphere| Includes RS232 and  5 Volt analog output
  •  Efficient—designed with no moving parts for durability and reliability/ No mounting is required
  •  Replaceable sensor—field-replaceable allowing for longer transmitter life
  •  Calibrated—Every Model 22W is calibrated and pretested under actual vacuum against a NIST standard. NIST certification is available for an additional fee
  •  Applications—freeze dryers, refrigeration systems assembly lines, vacuum ovens, laboratory, and foreline gauge solution

Model 22W has a compact electronic package that fits right on top of the vacuum tube

RS232 output: can be used to graph and plot historical data with the DigiVac plotting software, and as a PLC vacuum transmitter.


User Manual Data Sheet Quick Start Guide Supplemental Guide

For more documentation, please visit DigiVac’s folder.

Technical Specifications

Units Torr or Millibar
Range .001-760 Torr
Range with Accuracy .001-5 Torr
Sensor Type Agilent 531-NPT, Agilent 536-NPT
Dimensions 1.6″ x 1.8″ x 2.4″
Certifications CE

Product Inquiry

Model 22W PLC Vacuum Transmitter
Model 22W Vacuum Gauge | PLC Vacuum Transmitter