dual o2-co2 ip67 2020

Water-Resistant O2/CO2 Monitor, 0-25% and 10,000ppm

Item #: 99127


Product Summary

The Water-Resistant Sample Draw Dual O2/CO2 Monitor is a self-contained system that is designed for continuous monitoring of inert gases in confined spaces that require daily wash-downs. The monitor can sample O2/CO2 levels from up to 100 feet away and is ideal for facilities that use inert gases including, but not limited to, nitrogen, helium, and argon. Its IP67 water-resistant enclosure keeps the monitor dry during wash-downs. The O2/CO2 monitor is perfect for environments such as breweries, bottling plants, food processing facilities, and laboratories. The monitor will remain accurate at temperatures as low as -40C. PureAire’s durable, non-depleting, zirconium oxide sensor cells, and NDIR cells, will last up to 10+ years in a normal environment, without needing to be replaced.

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  • No calibration required for oxygen
  • Self-calibrating CO2 sensor
  • Local backlit concentration display
  • Built-in visual LED alarm indicators
  • Alarm level 1 and 2 for O2 and CO2
  • No drift due to environmental or temperature changes
  • 3 Year warranty
  • No maintenance zirconium oxide O2 cell and long-life CO2 sensor
  • Built-in flow sample pump for remote sampling up to 100 feet
  • IP67 Water-Resistant Enclosure
  • 4-20mA analog output
  • Built-in user-adjustable alarms and relays

Long-Lasting Sensors

The PureAire Water-Resistant Combo O2/CO2 Monitor is a compact gas monitoring system that’s ideal for the continuous monitoring of both gases. The monitor is intended for use in nitrogen gas areas, or CO2 food and beverage, confined spaces, and other locations where low oxygen levels may pose a hazard to personnel.

The PureAire Water-Resistant Combo O2/CO2 is made with a proprietary zirconium cell and patented NDIR cell, rather than a continuously depleting electrochemical sensor cell. The zirconium cell means the monitor can provide stable oxygen and CO2 readings despite changes in temperature, barometric pressure, and humidity levels.

The PureAire Combo O2/CO2 oxygen sensor requires no quarterly calibration or annual maintenance and the CO2 sensor automatically adjusts to ambient levels. All you need to do is plug in the monitor and let it run in the background—no maintenance needed!


Sampling Method & Range Sample 0-25% O2 & 0-10,000ppm CO2
Accuracy 1% of full scale
Operating Temperature -40 to +122F   (-40 to +50C)
Display 3/4” backlit digital display
Sensor Type Zirconium oxide for O2, NDIR for CO2
Sensor Life 10+ years under normal conditions
Signal Outputs 4-20 mA analog output

One user-adjustable Alarm relay for Oxygen, One user-adjustable Alarm for CO2. Relays are rated 2 amp 24VDC

Power Requirements 24VDC 300mA
Dimensions 7.0 (W) x 11.0 (H) x 6.0(D) inches; 177.8 mm x 279.4mm x 154.4mm
Weight 4.4 lbs (1.9 kg)
Enclosure  Polycarbonate
Required calibration None (no zero or span pots supplied)
Country of Origin USA
Harmonized Tariff Code 8531.10.0045
Additional O2 Monitor Accessories List Price
8 Channel Controller $2,795.00 US (P/N # 99058)
Horn and Strobe  $170.00 US (P/N # 42002)
Remote Display $395.00 US (P/N # 99091)

Connects to Distributive Control Systems and Programmable Logic Controllers

The Water-Resistant Combo O2/CO2 can be used with PureAire’s proprietary controllers, or a commonly paired accessory, the remote display. Individuals can operate the oxygen monitors remotely by as much as 3,000 feet from fire panels or programmable logic controllers.

No Calibration Required

The Water-Resistant Combo O2/CO2 Monitor does not require quarterly calibration unlike other types of gas monitors. Since the earth is a natural source of calibrated oxygen, PureAire’s combo monitor is continuously being challenged to 20.9%. Additionally, the earth’s ambient levels of CO2 are 400ppm. On a weekly basis or on-demand, the monitor automatically adjusts to ambient CO2 levels. Enjoy a safer workplace with no zero or span adjustments, no calibration, and no expensive maintenance.

Plug & Play Operation

The Water-Resistant Combo O2/CO2 Monitor is ready to go right out of the box. To begin using the combo monitor, remove it from the box and place it on a surface or mount it on the wall using the included brackets. Then plug the monitor into your facility’s power supply or a wall socket. After the initial startup sequence, which takes four minutes, the monitor begins to operate.

The Water-Resistant Combo O2/CO2 Monitor is designed to provided unattended 24/7 leak detection for years. Supplied with a full bumper-to-bumper warranty, the Combo O2/CO2 will be the last gas monitor you’ll need to purchase.

O2 Monitor System Features

PureAire uses a sophisticated built-in CPU that provides a local display, safety alarms, and control for both oxygen and carbon dioxide simultaneously.

The Water-Resistant Combo O2/CO2 Monitor comes with individual dedicated user selectable relays designed to operate on-off valves for the control of CO2 injection in grow rooms while simultaneously activating alarms when oxygen levels drop.

Dual O2 & CO2 Water-Resistant Monitor IP67 Product Literature

Safety Risks of Oxygen Deficiency

Carbon Dioxide Safety

PureAire Water-resistant O2 / CO2 Monitor Manual

Remote Digital Display p/n 99091

Horn/strobe 24VDC Red p/n 42002

horn and strobe\

Replacement Filter with Drain 90179