Description
| Feature | Specification |
| Model Number | 99129 (Includes Global Power Supply) |
| Gases Detected | Oxygen (O2) |
| Sampling Method | Sample Draw (Built-in Flow Sample Pump) |
| Sampling Distance | Up to 100 feet (∼30 meters) |
| Sensor Technology | Long-Life Zirconium Oxide Sensor Cell |
| Sensor Life | >10 Years (under normal conditions) |
| Required Calibration | None (No Zero or Span Pot Adjustment Needed) |
| Range | 0−25% O2 |
| Accuracy | ±1% of Full Scale |
| Alarm Setpoints | Two Alarm Relays: 19.5% and 18.0% (User Adjustable) |
| Built-in Alarm | 90 dB Audible Alarm |
| Signal Outputs | 4−20mA Analog Output; Dual Level Alarm Relay Contacts |
| Operating Temperature | −40∘C to +50∘C |
| Display | 3/4 inch LCD Digital Display, Backlit |
| Enclosure | Polycarbonate, Wall Mount |
Understanding Oxygen Deficiency and Its Danger
An oxygen deficiency monitor is a vital safety instrument that continuously measures the percentage of oxygen in the surrounding air. Normal breathable air contains about oxygen. The human body requires this level for safe function.
In facilities like laboratories, hospitals with machines, or petrochemical plants, workers frequently handle inert (non-flammable) gases such as nitrogen, argon, or helium. These gases are odorless, colorless, and harmless on their own. However, if a leak occurs—for example, from a cryogenic tank or a gas line—the inert gas rapidly displaces the air, causing oxygen deficiency in the room.
This displacement is a silent killer. Because humans cannot sense a drop in oxygen until it is too late, the lack of an oxygen depletion alarm can lead to immediate and devastating consequences, including dizziness, impaired judgment, loss of consciousness, and even death within minutes.
What are Hazardous Oxygen Deficiency Levels?
Safety regulators, including , define a hazardous atmosphere as one where the oxygen concentration falls below . This is the level where an oxygen deficiency monitor must sound a first-stage alarm to warn personnel.
- Below : This triggers a low-level alarm. Workers may not feel symptoms, but the atmosphere is considered and requires immediate investigation.
- : Workers may experience rapid breathing, increased pulse rate, impaired thinking, and reduced coordination, especially when physically exerting themselves.
- : This is an extremely dangerous range. Symptoms include faulty judgment, loss of coordination, and abnormal fatigue. You need an immediate and effective oxygen depletion alarm at this stage.
- Below : This level can cause convulsions, immediate loss of consciousness, and death.
The PureAire Sample Draw Oxygen Deficiency Monitor is designed to provide advance warning, activating its built-in at and to give your team critical time to evacuate before serious injury or death occurs.
The Critical Need for an Oxygen Level Monitor in the UAE and GCC
The PureAire Monitoring Systems oxygen deficiency monitor is essential for facilities across the and the (including , , , , and ).
The region’s reliance on large-scale industrial gas distribution, advanced healthcare (like installations), and deep-sea diving operations creates numerous high-risk environments. Furthermore, the extreme heat means cooling and cryogenic systems are widely used, increasing the potential for inert gas leaks. Regulatory bodies enforce strict safety compliance, and having a certified, long-life device like the PureAire oxygen deficiency monitor demonstrates your commitment to the highest safety standards. Don’t risk compliance failure or—more importantly—a life. Install a proven today.
Protect Your Personnel. Ensure Compliance. Order Today.
You need the best defense against the invisible threat of oxygen deficiency. The PureAire Sample Draw Oxygen Deficiency Monitor offers the ultimate combination of high performance, zero maintenance, and decades-long reliability.
As the authorized and the official Authorized Distributor of for the region, we guarantee you receive genuine products, competitive pricing, and full factory support.
Don’t wait for an accident to prove the necessity of a reliable oxygen depletion monitor. Click below to request a quote or speak with our gas safety experts today!

Reviews
There are no reviews yet.