- Designed for mounting on Glove Boxes
- Long life 10 + years average sensor life
- Two-Alarm Relays for 19.5% and 18.0%
- No Scheduled Maintenance Required
- Built-in audible alarm 90 dB
- 3 Year Warranty
- No Drift due to Thunderstorms or barometric pressure changes
- Local display
- 4-20mA output (Active)
- UL, C UL, and CE Approvals
- 24V DC Power Supply Included (99021)
- International Power Supply Included (99142)
PureAire Monitoring Systems is a leading manufacturer of O2 monitors. We created a better product that eliminates the inconvenience of disposable sensors while continuing to meet your needs. When it comes to O2 deficiency detection, PureAire makes the longest-lasting, most reliable, and affordable oxygen monitors. There are no hidden costs and no replacement of the sensor for 10+ years.
The O2 monitor is used in laboratories using Nitrogen and Argon. It is also used in confined spaces, glove boxes, incubators, gas hoods, cryogenic gas storage, and research and development. PureAire Oxygen Monitors are built with a long-lasting zirconium oxide sensor cell that responds to changing conditions within seconds at temperatures down to -40C.
Easy to operate, the O2 monitor‘s joystick controls an audible alarm with visual alarm indicators. The instrument uses a local display and can be linked to fire alarm systems.
The monitor requires no scheduled maintenance or calibration due to its long-life sensor. Built-in “supervised watchdog” software continuously monitors all instrument functions 24/7. PureAire’s Oxygen Monitor is not affected by humidity, temperature, or changes in barometric pressure. Rapidly changing barometric pressure from thunderstorms will not disrupt PureAire’s oxygen deficiency monitor. The majority of oxygen monitors sold use depleting electrochemical sensors that require frequent maintenance and calibration. PureAire’s Oxygen monitor can save up to $400 annually on replaceable sensors.
Connects to SCADA and PLC Controls
The Air Check O2 Deficiency Monitor is 24VDC powered and transmits continuous oxygen concentration levels to any system control data acquisition system or programmable logic controller. PureAire’s Oxygen Deficiency Monitor can also be operated remotely up to 1,000 meters or 0.6 miles from centralized controllers.
PureAire’s Oxygen Sensor Cell
The Air Check O2 Deficiency 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 0% up to 95% oxygen levels, the current limiting O2 sensor operates at a lower temperature than competitive concentration type cells. The average life of PureAire’s O2 sensor is over 10 years in most environments.
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
The Air Check O2 Deficiency Monitor is available in many different configurations. 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. Other options available are Modbus digital communications or full Wireless radio communications.
