Our new Sentinel Digital Vacuum Gauge, the DVG-1, is a wall mounted digital vacuum gauge to monitor vacuum. 



  • Visible from a distance
  • Accurate vacuum readings
  • Water resistant with water proof electrical connection
  • Eliminate the hazards of mercury gauges


  • Size: 4" x 3" x 1 3/4"

  • 9 Volt DC - Wall transformer with 6' of cord ending with a watertight connector

  • Read to .01" Hg

  • Monitor vacuum from 0 to 19.99" Hg

  • Water resistant enclosure

  • LED display 9/16" digits for easy readability

  • Accurate ± .25% FS

  • Watertight electrical connection

  • Gold plated contacts

  • Filter protected - comes with filter and 6' of 1/8 inch tubing

  • American made

  • Mercury free

The Sentinel Digital Vacuum Gauge Model DVG-1 enables the dairy farmer to monitor the dairy system vacuum accurately to 1/100" Hg. The Sentinel DVG-1 is designed to be installed on the wall of a dairy farm breezeway, so it is water resistant. Compact in size but with 9/16" LED digits, one can view it from many feet away. The DVG-1 is powered with DC voltage from a wall transformer to allow continuous viewing of vacuum levels.


Accuracy: ±0.25% Full Scale

Resolution: 0.01" Hg

Range: 0 - 19.99" Hg Differential Vacuum

Environmental: Temperature: 0°F to 150°F Relative Humidity: 95% non-condensing from 0°F to 150°F Power Supply: Input: 120 VAC, 60 Hz, 6W Output: 9V DC, 300 mA

The Sentinel DVG-1 Installation & Operations Guide in PDF format, go here.


 Copyright© 2010 L. J. Engineering, Inc. All rights reserved. Revised: June 8, 2010