PureAire’s Oxygen Deficiency Monitor is perfect for facilities that use inert gases, including, but not limited to, nitrogen, helium, and argon. The monitor is well suited for confined spaces, cryogenic locations, and freezers. The monitor will remain accurate at temperatures as low as -40C. PureAire’s durable, non-depleting, zirconium oxide sensor will last 10+ years in a normal environment without needing to be replaced.

Facilities That Need This Product

  • Pharmaceutical Manufacturers
  • Laboratories
  • Hospitals
  • Cryogenic locations
  • Food Processing


  • UL, C UL and CE approvals
  • Long-life 10+ year average sensor life
  • Two-Alarm setpoints for 19.5% and 18.0%
  • Built-in audible alarm 90 db
  • 3 year warranty
  • Digital display, and 4-20mA analog output
  • Wall mounting brackets
  • International power supply included

Why choose PureAire?

PureAire Monitoring Systems, Inc. is an industry leader in oxygen monitoring and gas detection. For over 20 years, we have dedicated ourselves to the safety of our clients, and the customers they serve, by manufacturing monitors that are long-lasting, accurate, and reliable. PureAire takes pride in providing exceptional customer service, along with 24/7 availability to our technical service department.

What is an Oxygen Deficiency Monitor?

The Oxygen Deficiency Monitor is designed for continuous monitoring in confined spaces where low oxygen levels pose a hazard to personnel.

What gases can be detected with an Oxygen Deficiency Monitor?

PureAire’s Explosion Proof O2 monitors can be used in an ambient atmosphere where inert gases, including nitrogen, argon, helium, and carbon dioxide are used.

Easy to Use

The monitor arrives ready to work right out of the box. Simply secure the unit to the wall 3-5 feet from the gas source, plug it in, and power it on. The monitor will begin sampling oxygen levels after a brief startup period. Oxygen levels are displayed clearly on the screen for easy access and visibility.

Top Advantages of Oxygen Deficiency Monitor

Oxygen Deficiency Alarm

PureAire’s O2 Monitor comes with 2 adjustable alarm setpoints that can connect to a horn/strobe, exhaust fan, 8 channel controller, remote display, or into building systems. Alarm signals also can tie into automatic shut-off valves when oxygen levels fall below the OSHA threshold.

Easy To Use

The remote digital display easily connects to provides constant monitoring with little to no adjustments, saving you time and money while allowing the monitor to operate seamlessly. Our quality sensor makes this the longest lasting O2 monitor on the market.

    By Sending This form You Are Agreeing To Our Privacy Policy.