PureAire O2 & CO2 Water Proof Monitor, IP67 0-25%

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

Item #: 99127


Product Summary

The Dual IP67 Oxygen and CO2 monitor is perfect for facilities using nitrogen, carbon dioxide, and argon. The monitor is also suited for use in confined spaces, food and beverage locations, and flashing freezing areas. Our safety O2 and CO2 sensors last for 10 years and more. Monitor comes with a 110/220V plug-in power supply.

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✓ Suitable for remote sampling to 100 feet
✓ IP67
✓ Alarm level 1 and 2 for O2 and CO2
✓ No calibration required
✓ 3 year warranty
✓ No drift to environmental or temperature changes
✓ No maintenance zirconium O2 and CO2 sensor
✓ Local display
✓ 4-20 mA analog output.
✓ Built-in flow sample pump
✓ Built-in user adjustable alarms & relays

Long Lasting Sensors

The PureAire Waterproof 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 Waterproof 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 7.25 (W) x 6.0 (H) x 5.0 (D) inches; 184.2 mm x 152.4 mm x 127 mm
Weight 4 pounds (1.81 kg)
Enclosure  Polycarbonate
Required calibration None (no zero or span pots supplied)


Additional O2 Monitor Accessories List Price
8 Channel Controller $2,595.00 US (P/N # 99058)
Horn and Strobe  $160.00 US (P/N # 42002)
Remote Display $375.00 US (P/N # 99091)

Connects to Distributive Control Systems and Programmable Logic Controllers

The Waterproof 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 Waterproof Combo O2/CO2 Monitor does not require quarterly calibration unlike other types of gas monitor. 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 Waterproof 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 Waterproof 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 Waterproof 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.

Air Check Dual O2 & CO2 Water Proof IP67


Remote Digital Display p/n 99091

Horn/strobe 24VDC Red p/n 42002

horn and strobe