Oxygen Monitors

Unmatched Reliability & Value

If you are concerned over unsafe levels of oxygen explore a complete line of oxygen deficiency monitors. Our portfolio of Alpha Omega Instruments trace and percent oxygen analyzers and transmitters, safety monitors (oxygen deficiency) and moisture monitors and cost-effective and reliable.  We supply many instruments to medical, aerospace, and municipalities.

Our products serve the petrochemical, energy, refining, bulk gas, aerospace, energy, environmental, food and beverage, atmospheric, biofuels, oil and gas, pharmaceuticals, chemical, pulp and paper, water and wastewater, semiconductor, laboratory and research, life science, atmospheric, aerospace, pharmaceuticals, biotechnology, and medical markets.

With our Series 1300, our proprietary Enhanced Electrolyte System (EES) extends the life expectancy of the sensor to years instead of approximately 12 months typical of most “fuel cell type” sensors.  

The OXY-SEN™ Oxygen Monitor is an economical percent oxygen monitoring system equipped with a standard measuring range of 0-100%.  It comes standard with dual 4-20 mADC recorder outputs that are scaled over 0-100% and 0-25% and can operate in harsh atmospheres.  If you need a fast monitor, the OXY-SEN responds instantaneously to changes in O2.

The Series 2000 Percent Oxygen Analyzer is a rugged, microprocessor-controlled percent oxygen analyzer with either single range or three range capabilities from 0-1 to 0-100%.  It has a high tolerance for gases containing up to 100% carbon dioxide.

The Series 2520 Portable Percent Oxygen Analyzer is a battery-operated percent oxygen analyzer designed for industrial and commercial applications where accurate and reliable spot percent oxygen measurements are needed. asy to carry and transport, it senses oxygen changes in seconds.


  • Electrochemical sensors that last up to 3x longer than “fuel cell” type sensors
  • Percent or trace oxygen readings as low as parts per billion
  • Benchtop, wall mounted and p anel mounted options for continuous measurements, portable options for spot measurements
  • NEMA 1 (general purpose) to NEMA 7 (explosion proof) enclosure types
  • Exceptional warranties on sensors and electronics
  • All of our devices are competitively priced.


  • Trace oxygen analyzers
  • Percent oxygen analyzers
  • Portable oxygen analyzers
  • Oxygen deficiency monitors

Reliable Oxygen Deficiency Monitors Equals Safety

Oxygen deficiency monitors are critical anywhere low oxygen levels in normal air can happen. If oxygen levels continuously drop eventually the room air simply cannot support life.  This is a very dangerous situation.

Do you have concerns over the possibility of unsafe levels of carbon dioxide in the breathing air? Need a reliable carbon dioxide monitor?  Explore our reliable oxygen deficiency monitors with accurate sensors, percent level displays, and audible and visual safety alarms.  You can trust our monitors. 

Room Oxygen Monitoring

If someone were to ask you what the major cause of gas related injuries in the workplace is, would your answer be carbon monoxide poisoning?  What about exposure to ammonia, hydrogen chloride, carbon dioxide, hydrogen sulfide, or chlorine? Even though injuries are reported as a result of over exposure to these gases, oxygen deficiency continues to pose the largest overall health risk. Often referred to as the “silent killer”, oxygen depleted breathing air is the cause of numerous injuries and/or deaths on an annual basis. Breathing air oxygen can be depleted as a result of leakage of stored or piped inert gases such as nitrogen, helium, argon, carbon dioxide, sulfur hexafluoride, etc.

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Safety & Process Monitors, Oxygen Deficiency Monitors with Low Maintenance and High Reliability


  • Aerospace/Govt.
  • Bioreactors
  • Bio-Research
  • Bulk Industrial Gases
  • Chamber/Glove Box Manufacturers
  • Chemical
  • Chemical Storage
  • Combustion Control
  • Electrical Transformers
  • Fertilizers
  • Fiber Optic Research
  • Landfill
  • Light Bulb Manufacturers


  • Improved reliability
  • Low cost of ownership 
  • Meet compliance requirements
  • Backed by global service and support

Process Insights is committed to solving our customers’ most complex analytical and process challenges.  


Americas +1 713.947.9591
EMEA +49 69 20436910
China/APAC +86 400 086 0106


Our Oxygen Monitors for Industrial Applications

Series 1300™

Alpha Omega Instruments Oxygen Deficiency Monitor

Process Insights_AOI 1300 oxygen deficiency monitor

Series 3000™

Alpha Omega Instruments Trace Oxygen Analyzer 0-1 PPM to 0-10,000 PPM

Process Insights_AOI_Series 3000_ Trace Oxygen Analyzer

Series 3500/3510™

Alpha Omega Instruments Trace Oxygen Blind Transmitter 0-10 PPM to 0-20,000 PPM

Process Insights_AOI Series-3510 blind transmitter

Series 3500/3510™ EX

Alpha Omega Instruments Trace Oxygen Blind Transmitter Explosion Proof 0-10 PPM to 0-20,000 PPM

Process Insights_AOI_35003510 Explosion Proof Transmitter

Series 3520™

Alpha Omega Instruments Portable Battery-Operated Trace Oxygen Analyzer

Process Inisghts_AOI_Series 3520_portable oxygen analyze

ZRO 2000™

Alpha Omega Instruments Trace Zirconia Oxygen Analyzer PPM to 100%

Process Insights_AOI ZRO 2000 oxygen analyzer


Alpha Omega Instruments Percent Oxygen Analyzer 0-100% and 0-25%

Process Insights_AOI-OXY-SEN oxygen analyzer

Series 2000™

Alpha Omega Instruments Percent Oxygen Analyzer 0-1 to 0-100%

Process Insights_AOI_Series 2000 oxygen analyzer

Series 2500/2510™

Alpha Omega Instruments Percent Oxygen Transmitter 0-2% to 0-100%

Process Insights_AOI_ Series 2510-Percent-Oxygen-Transmitter

Series 2520™

Alpha Omega Instruments Portable Percent Oxygen Analyzer 0-5, 0-10, 0-25, 0-50, and 0-100%

Process Insights_AOI_Series 2520 portable oxygen analyzer

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