Trace Oxygen Monitor 0-1000ppm


Item #: 99097 oxygen monitor, 0-1000ppm

Product Summary

This is a specialized monitor for use in a vacuum environment, 3D printer, nitrogen sample line, nitrogen generator, cryogenic enclosures, or gas line. Our 10+ year zirconium oxide sensor can be mounted inside the vacuum and the monitor is either connected via KF25 flange. Sensor is connected using a 10ft cable for easy placement.

The O2 Oxygen Monitor is  ideal for the continuous monitoring of gas lines, 3D printers, nitrogen gas compressors, vacuum chambers, and locations where low oxygen levels need to be monitored. Unlike electrochemical sensor cells the O2 analyzer zirconium cell provides stable oxygen readings even in areas where temperature, barometric pressure and humidity levels are changing. The PureAire Oxygen Analyzer is suitable for either indoor or outdoor use.

The heart of the monitoring system is a long lasting zirconium sensor, which detects low oxygen conditions within seconds and provides accurate measurements over a wide temperature and humidity range.  There are no zero or span calibration pots to adjust and when compared to disposable type sensors, our long life zirconium O2 sensor can save up to $475 annually and will pay for itself in just over 3 years!

The Air check unique sensor mounts directly into chambers or load locks through the use of a KF type vacuum fitting. Monitoring oxygen directly under vacuum eliminates the need to change the environment back to ambient and can improve thru put. The Air check O2 Deficiency Monitor also provides stable readings even in areas that contain high electro-magnetic fields.

  • Monitors in Partial Vacuum (300 torr)
  • 0-1000ppm Oxygen Sensor
  • Two-Alarm Relays
  • No Maintenance Required
  • Digital Display, 4-20mA Analog Output
  • No Drift due to Thunderstorms or barometric pressure changes
  • Wall mounting brackets and optional plug-in wall power supply
  • UL, C UL and CE Approvals
Sampling MethodDiffusion Oxygen Monitor
(Supplied with KF 25 Fitting)
Gases DetectedOxygen (O2)
Range 0-1000ppm oxygen
Accuracy± 50 ppm
Operating Temperature-40 to +50 ºC
Display3/4″ LCD Digital Display, Back Lit, 3 Alarms LED´s
Sensor TypeLong life zirconium oxide sensor cell
Sensor LifeTBD
Signal Outputs4-20 mA Analog Output
Dual Level Alarm Relay Contacts
Power Requirements24 VDC
250 mA
Width5.0 in
127 mm
Height5.5 in
140 mm
Depth3.25 in
83 mm
Weight1.6 lb
0.8 kg
EnclosureNema 4X
Required CalibrationNone
No Zero or Span Pot Adjustment Required


Additional PartsList Price
24 VDC Power Supply$39.00 US (P/N # 45101)
Horn and Strobe Combo$145.00 US (P/N # 42002)
Remote Display$325.00 US (P/N # 99091)

Connects to DCS and PLC Controls
The O2 Oxygen Monitor is 24 V DC powered and transmits continuous oxygen concentration levels to any distributive control system or programmable logic controller.

PureAire’s Oxygen Sensor Cell
The Oxygen Monitor  uses an exclusive Current Limiting Zirconium Oxide Oxygen sensor that never requires a reference gas. Unlike concentration type zirconium cells that must have a reference gas, PureAire’s O2 monitor can operate in 100 % nitrogen environments. Capable of detecting low oxygen levels, the current limiting O2 sensor operates at a lower temperature than competitive concentration type cells.  The Oxygen Analyzer never needs calibration.  There are no zero or span adjustments to make; the only optional response test required is to subject the O2 system to nitrogen or argon periodically.

O2 Monitor System Features
The Oxygen Monitor is available in many different configurations perfect for OEM process tool installation. PureAire uses a sophisticated built-in CPU that is flexible to provide users with a low cost basic display only monitor or a full featured monitor with dual level, user selectable alarm relays.

Air check O2 Digital remote sensor 0-1000ppm Literature

Air Check O2 1000 ppm Manual

Oxygen Analyzer for 3D Printers- Additive Manufacturing


Remote Digital Display p/n 99091


Power supply p/n 45101 24V for US users

Power supply pn 45101 UL-1

Horn/strobe 24VDC Red p/n 42002

horn and strobe