Oxygen Monitors

Unmatched Reliability & Value

We Care About Safety

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.  Occupational Safety and Health Administration (OSHA) defines an oxygen deficient environment when oxygen levels fall below 19.5 percent.  Oxygen deficient environments require accurate and reliable instrumentation. Oxygen levels below 16% is dangerous to human life.

The Oxygen Deficiency Monitor Series 1000 has been replaced with the Series 1300 Oxygen Deficiency Monitor. 


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


Our oxygen deficiency monitors ensure safe working environments in any laboratory, scientific, medical, or industrial application utilizing oxygen depleting gases.  Our monitors continuous monitor oxygen levels. 

  • Medical and Healthcare Industry:  Uses inert gases for many reasons like MRI facilities use Helium to cool MRI machines, cryogenics use liquid nitrogen, helium or argon, fertilization, and cryo-storage facilities; laboratories often use compressed gases including argon, nitrogen, and carbon dioxide.
  • Pharmaceutical Manufacturers:  Use nitrogen and carbon dioxide to maintain sterile environments throughout the manufacturing and packaging processes.
  • Food and Beverage Industry:  Use carbon dioxide and nitrogen gas for a range of uses. Nitrogen is used in the food preservation process to remove oxygen from the manufacturing environment.
  • Semiconductor Manufacturers:  Monitor process gas levels to reduce impurities that can impact the quality of the components and devices being manufactured.

Need service or calibration for your oxygen analyzer?  No problem.   We are ready to assist you with any technical or service-related inquiries.  Just complete our Oxygen Monitor RMA.   We will evaluate instruments for re-verification of performance using NIST calibrated gas standards; however, in the event that upon evaluation it is determined that the unit is in need of repair before performance verification can be completed, the customer will be notified if the serial number indicates the unit is 10 or more years old. Due to availability of replacement components, repairs are no longer supported by us on units that age.   We are experiencing an unusually high volume of service items at this time, so our standard lead-times may not be applicable. The current lead-time is approximately 4-5 weeks. 

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Process Insights_Alpha Omega Instruments_Oxygen Analyzers

For Industrial, Lab & Research,
& Cleanroom Environments


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


Our trace & percent Oxygen Monitors / oxygen deficiency monitors

Series 1000™

Series 1300 replaces the Series 1000
Series 1300 replaces the Series 1000

Series 1300™

ALPHA OMEGA INSTRUMENTS™ Oxygen Deficiency Monitor
Process Insights_Series 1300 Oxygen Monitor

Series 3000™

ALPHA OMEGA INSTRUMENTS™ Trace Oxygen Analyzer 0-1 PPM to 0-10,000 PPM
Process Insights_Series 3000 Oxygen Monitor

Series 3500/3510™

ALPHA OMEGA INSTRUMENTS™ Trace Oxygen Blind Transmitter 0-10 PPM to 0-20,000 PPM
Process Insights_Series 3500 Oxygen Monitor

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 Insights_Series 3520_oxygen monitor

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%
rocess Insights_AOI_Series 2520 portable oxygen analyzer
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