- Long-life 10 + Years average sensor life
- No Calibration Sensor
- IP67 Water-Resistant Enclosure
- Two-Alarm Relays for 19.5% and 18.0%
- No Scheduled Maintenance Required
- 3 Year Warranty
- Digital Display
- 4-20mA Analog Output (Active)
- No drift due to thunderstorms or barometric pressure changes
- Wall mounting brackets
- Built-in Flow Sample Pump
- UL, C UL, and CE Approvals
Long Last Zirconium Sensor
As a leading manufacturer of oxygen monitors, PureAire Monitoring Systems puts safety, performance, reliability, and affordability first. Our oxygen monitors last for 10+ years with no replacement, no scheduled maintenance, and no hidden costs.
The Water Resistant Oxygen Monitors work well anywhere gas leaks cause oxygen depletion, including in food and beverage, bottling plants, flash-freezing tunnels, laboratories, manufacturing facilities, and freezers. Our monitors are built with a long-lasting zirconium oxide sensor cell, which delivers reliable monitoring against leaks of argon, helium, and nitrogen for 10 years. The Monitor includes visual alarms, but it may be connected to fire alarm systems to amplify the reach.
The Water-Resistant Oxygen Monitor is easy to set up, easy to operate, and requires no calibration once installed. A simple, periodic span adjustment may be necessary. Supervised watchdog software checks that everything is working properly and notifies you of any inconsistencies on the monitor. Immune to performance changes from barometric pressure drops, humidity, and temperature, these monitors are reliable and cost-effective. The Occupational Safety and Health Administration (OSHA) specifies that a hazardous condition may include one where the oxygen concentration is below 19.5% or above 23.5%.
| Sampling Method |
Sample Draw for Splash Down Areas |
| Gases Detected |
Oxygen (O2) |
| Range |
0 – 25 % |
| Accuracy |
Delivers ± 0.2% O2 accuracy (± 1 % of Full Range) |
| Operating Temperature |
-40º to 140ºF (-40º to 60ºC) |
| Display |
3/4″ LCD Digital Display, Back Lit |
| Sensor Type |
Long-life zirconium oxide sensor cell |
| Sensor Life |
> 10 years under Normal Conditions |
| Signal Outputs |
4-20 mA Analog Output (Active)
Dual-Level Alarm Relay Contacts |
| Power Requirements |
24 VDC
300 mA |
| Width |
7.25 in
184.2 mm |
| Height |
6.0 in
152.4 mm |
| Depth |
5.0 in
127 mm |
| Weight |
2.8 lb
1.3 kg |
| Enclosure1 |
Polycarbonate IP67 |
| Calibration |
Calibration is not required. Periodic span adjustment as needed. |
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| Country of Origin |
USA |
| Harmonized Tariff Code |
8531.10.0045 |
1 Not intended for explosive atmospheres
Connects to Distributive Control Systems and Programmable Logic Controllers
The Water Resistant Oxygen Monitor can be used with PureAire’s proprietary controllers, either single or multichannel. Dual selectable alarm relays set off strobe lights and remote horns, so that staff can learn of the hazard. Individuals can operate the oxygen monitors remotely by as much as 1,000 meters or 0.6 miles from the centralized control systems.
Better Oxygen Sensor Cell
Unlike other oxygen monitors, PureAire’s Air Check O2 Deficiency Monitor relies upon a Current Limiting Zirconium Oxide Oxygen sensor. This sensor does not need a reference gas and can perform reliably in environments that contain 100 percent nitrogen. The sensitive monitor can tell oxygen levels by percentages, so it can operate in lower-temperature environments than the more frequently used concentration-type cells. The improved cell helps PureAire sensors last for 10+ years.
One-Step Sensor Adjustment
PureAire Oxygen Deficiency Monitors require occasional testing with nitrogen to validate the sensor’s response to low oxygen levels. While calibration is not necessary for our monitors to accurately measure oxygen depletion levels1, annual fine-tuning might be needed to ensure the sensor’s span accurately corresponds to the standard 20.9% oxygen concentrations.
PureAire’s Auto-Span not only simplifies the process of adjusting the span of the oxygen sensor but also provides a quick check of the sensor and the monitor’s response to an oxygen-deficient atmosphere. With a press of a button, this feature saves you time and money, protects your facilities and employees, and, most importantly, provides you with the reassurance of consistently reliable performance, making it a valuable addition to your safety measures.
1Please follow your facility’s safety guidelines and state and local regulations regarding calibration requirements for safety equipment.
O2 Monitor System Features
PureAire offers its Air Check O2 Deficiency Monitor in multiple configurations. Every unit comes with a choice of a low-cost basic display monitor or a full-featured, dual-level monitor with user-selectable alarm relays. When built-in alarm relays are used, the sensor continuously monitors electronics, sensor cells, and sample flows. Any faulty information is provided to the front panel LED, mA output, and alarm relay, for instant notification.
