Explosion Proof Oxygen Monitor, 0-25%, Incl 10+ Year Sensor

remote display wiring D with parts Rev D 82521

Explosion Proof Oxygen Monitor, 0-25%, Incl 10+ Year Sensor

Name: Explosion Proof Oxygen Monitor, 0-25%, Incl 10+ Year Sensor
SKU: 99132
Availability: InStock

Item #: 99132

$3,405.00 – $4,395.00

Product Summary

The Explosion Proof Oxygen Deficiency Monitor is perfect for facilities that use inert gases including, but not limited to, nitrogen, helium, and argon. The enclosure is specifically designed to prevent the ignition of an explosion. The monitor is well suited for environments such as corn and grain processing facilities, powder coating plants, and the oil and gas industry where combustible dust and ignitable fibers are present. The monitor will remain accurate at temperatures as -40C. PureAire’s durable, non-depleting, zirconium oxide sensor will last up to 10+ years in a normal environment needing to be replaced.

Two-Year Extended Warranty Available for this product in the US, Canada, and Mexico

Explosion Proof Oxygen Monitor, 0-25%, Incl 10+ Year Sensor

Options

Clear

99132 – Suitable for Class 1, Div 1 & 2, Groups B, C, D, Zones 1 & 2, Groups IIB+H2, IIA, IP66
99133 – Suitable for Class 2, Div 1 & 2 Groups E, F, G, IP66
99134 – NO Sample Draw Pump – Suitable for Class 1, Div 1 & 2, Groups B, C, D, Zones 1 & 2, Groups IIB+H2, IIA, IP66
99136 – Suitable for Class 2, Div 1 & 2 Groups E, F, G/Includes RS-485 Serial Communication, IP66
Long-life 10+ year average sensor life
Two-alarm relay setpoints available or alarm defaults are set 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 up to 100ft (99132, 99133, 99136)
CE, UL, and C UL approval on enclosure

The Explosion Proof Oxygen Monitor offers long-lasting O₂ deficiency detection. PureAire’s oxygen monitors are reliable, affordable, low maintenance, and provide 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 -40°C.

The monitor features an easy-to-read local display, visual LEDs, and an audible alarm. The oxygen monitor can be linked to fire alarm systems for notification of all employees.

The operator interface is via a menu-driven magnetic keypad, allowing full access without opening the enclosure.

The optional RS-485 feature provides serial communication between a PLC or PC and the monitor, which enables the monitor to transmit current relay and fault status.

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.

Sampling Method	Sample Draw
Range	0 – 25 %
Accuracy	Delivers ±0.2% O2 accuracy (± 1% of full range)
Operating Temperature	-40° to 140°F (-40° to +60ºC)
Display	3/4” backlit digital display
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
Dimensions	99132/99134 – 6.69″(W) x 7.56″(L) x 9.45″(H)-169.92mm x 192.02mm x 240.03mm 99133/99136 – 6.69″(W) x 7.56″(L) x 9.45″(H)-169.92mm x 192.02mm x 254mm
Weight	16 lb 7.3 kg
Enclosure	99132/99134 – Explosion-proof Class 1, Div 1 & 2, Groups B,C, & D, Zones 1 & 2, Groups IIB+H2, IIA, IP66 99133/99136 – Explosion-proof Class 2, Div 1 & 2, Groups E, F, G99212Q – Explosion-proof Class 2, Div 1 & 2, Groups E, F, G, IP66
Calibration	Calibration is not required. Periodic span adjustment as needed.
Country of Origin	USA
Harmonized Tariff Code	8531.10.0045

Additional O2 Monitor Accessories	List Price
8 Channel Controller	$3,35.00 US (P/N # 99196)
Horn and Strobe	P/N # 42012,42013,42014
Remote Display	$435.00 US (P/N # 99091)

Connects to DCS and PLC Controls

PureAire’s 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. It 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.

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.

Features of the Explosion-Proof Oxygen Monitor

PureAire’s Explosion-Proof Oxygen Monitor comes in several configurations. All units have a built-in CPU and a 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.