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Model 22W with Display Active Gauge by DigiVac

Active gauge can easily be popped off included 531 sensor and switched out/no tools required

  • Includes RS232 and 5 Volt Analog output
  • Bright LCD display for local reading of vacuum pressure
  • Applications: freeze dryers, refrigeration systems, assembly lines, vacuum ovens, laboratory

Range: 0.001 – 760 Torr

0 to 0.009 Torr +/-0.002 Torr

0.010 – 2.00 Torr +/-15% of reading

2.00 Torr to 5 Torr  +/- 1 Torr

5 – 760 Torr – Continuous and monotonic


  • 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 an available option 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

There is no need to take up valuable benchtop or panel space!

Simple Set-Up of Vacuum Process Telemetry:

  • Plumb the vacuum gauge tube into your vessel
  • Plug in the Model 22W active gauge on top of the gauge tube
  • Run the low voltage power wire (provided) to the gauge
  • Connect the digital signals

Options:  Agilent 536 or 531 equivalent tube    |     Measurement Units

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


User Manual Data Sheet Quick Start Guide Supplemental Guide

For more documentation, please visit DigiVac’s folder.

Technical Specifications

Units Torr or Millibar
Control 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

DigiVac Model 22w active gauge
Model 22W LCD | Active Gauge and Vacuum Transmitter with Display