Features:
- Suitable for Class 1, Div 2 Group B, C, D and Class 2, Div 2 E, F, G
- Long-life 10+ year average sensor life
- Two-adjustable relays for 19.5% and 18.0%
- No maintenance required
- Digital display, 4-20mA analog output
- No Drift due to thunderstorms or barometric pressure changes
- Wall mounting brackets
- Built-in flow sample pump up to 100ft
- CE, UL, and C UL approval
The Explosion Proof Oxygen Monitor offers long-lasting O2 deficiency detection. PureAire’s oxygen monitors are designed to be reliable, affordable, low maintenance, and provides continuous monitoring for an average of 10 years and more.
Ideal for use in electrically classified locations, confined spaces, analyzer shelters, petrochemical plants, cryogenic gas storage, and locations requiring remote sampling. The EX oxygen monitor can detect leaks of inert gases such as nitrogen, helium, and argon. The explosion proof oxygen monitor can detect gas leaks at temperatures as low as -40C.
The monitor features an easy-to-read local display, visual LED’s, and audible alarm. The oxygen monitor can be linked to fire alarm systems for notification of all employees.
The zirconia sensor is not sensitive to temperature, humidity, or barometric pressure changes (including thunderstorms). Unlike other oxygen monitors, replacement sensors are not required, since we use a zirconium sensor, rather than a disposable electrochemical sensor lasting 1-2 years on average. “Supervised watchdog," software runs 24/7 checking electronics and components. Any errors or inconsistencies are reported on the display.
By installing PureAire’s explosion proof oxygen monitor, you can save as much as $400 annually and reduce the time-intensive cycle of replacing sensors.
Connects to DCS and PLC Controls
Powered by a 24VDC battery, the Explosion Proof Oxygen Monitor continually checks oxygen concentration levels and relays information to the distributive control system, PureAire’s single or multichannel controllers, or a programmable logic controller. The Explosion Proof Oxygen Monitor can be operated remotely over a 0.6 mile or 1,000 meter radius.
Improved Oxygen Sensor Cell
Rather than the electrochemical sensor used by most companies, PureAire uses a current limiting zirconium oxide sensor. This sensor runs reliably without a reference gas, so it can be used in all-nitrogen environments. The earth provides calibrated oxygen. When everything is at an ambient state, the sensor is challenged by approximately 20.9 percent oxygen. PureAire’s Explosion Proof Oxygen Monitor checks 0 to 100 percent oxygen levels and can operate at a lower temperature than the competition, while needing no calibration. No maintenance is required to use the sensor; however, you may wish to subject it to nitrogen to test its response periodically.
Features of the Explosion Proof Oxygen Monitor
PureAire’s Explosion Proof Oxygen Monitor comes with several configurations. All units have a built-in CPU and low-cost, basic display-only monitor. For additional capabilities, a full-featured dual level monitor is available. The unit features built-in alarm relays and an air check program that monitors sample flow, sensor cell, and electronics. For full transparency, fault information is transmitted to the alarm relay, front panel LED and mA output.
