Oxy-Sen Percent Oxygen Monitor

Oxy-Sen Percent Oxygen Monitor

The OXY-SEN™ Percent Oxygen Monitor is an economically priced percent oxygen monitoring system equipped with a standard measuring range of 0-100%. It comes with dual 4-20 mADC recorder outputs that are scaled over 0-100% and 0-25%.

Our OXG-SEN oxygen monitor was designed primarily for applications where the user prefers to mount the gas diffusion end of the sensor through a chamber, glove box, reactor, etc. The diffusion end of the sensor has a threaded stock, providing an easy and convenient way of installing the sensor through the wall of a chamber, glove box, etc. by simply drilling and tapping an appropriately sized hole. Ten feet of coiled interconnecting sensor cable is supplied with each OXY-SEN Percent Oxygen Monitor.

For gas tight integrity, the extended-life sensor is equipped with an “O” ring that helps to form a gas-tight seal. One advantage of using a threaded sensor is that it eliminates the need to use sample pumps or air driven aspirators to provide sample to the sensor. An optional, flow through sensor housing is available for applications where external sampling is required.

Competitively priced.   


  • A factory Certificate of Performance Verification and Calibration is included at no additional charge. The product performance is verified in accordance with manufacturing specifications using a National Institute of Standards and Technology (NIST) traceable transfer calibrated standard gas mix.
  • Extended Life Oxygen Sensor:  Expected Life upwards of 3-4 years
  • Acid Gas Resistant Sensor:  Operates well in harsh atmospheres
  • Low Cost of Ownership
  • Excellent Speed of Response:  Responds instantaneously to changes in O₂



  • Measurement Range: 0-100% oxygen (gas phase)
  • Measurement Error: ±1% of full scale (at 77°F and 29.92” Hg)
  • Linearity: ±1% of full scale
  • Response Time: 90% of full scale in under 30 seconds
  • Sensor Type: Long-life ambient temperature electrochemical
  • Temperature Compensation: Standard
  • Operating Temperature Range: 40° to 104°F (5° to 40°C)
  • Warranty: 2 years on electronics and 1 year on sensor


  • Display: 3-1/2 digit liquid crystal
  • Input Power: 115/230 VAC, 50-60Hz or 24 VDC
  • Analog Output (Optional): 4-20 mADC scaled over 0-100% O2 and 0-25% O2(selectable by connector position)


  • Storage Temperature Range: 40° to 104°F (5° to 40°C)
  • Sample Gas Pressure Limits: < 2 psig (0.14 kg/cm2)


  • Dimensions of Electronics Enclosure: 5-3/4 in.(146.05 mm) Width 5-1/2 in.(139.70 mm) Height 1-1/4 in.(31.75 mm) Depth Note: All dimensions are without optional equipment
  • Dimensions of Sensor: 1.85 in.(47 mm) Height 0.9 in.(22.86 mm) Depth
  • Thread depth: 0.29 in.(7.34 mm) (exclusive of O-ring)
  • Thread size: M16 X 1
  • Weight (with 10’ of sensor cable): < 2 pounds (<0.907 kg)


  • Improved reliability
  • Lower cost of ownership 
  • Improved product quality
  • Efficiency
  • 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

request a quote

Alpha Omega Instruments
Process Insights
4140 World Houston Parkway
Suite 180
Houston, TX 77032

Process Insights BRANDS

Copyright © 2022 Process Insights, Inc. 
All Rights Reserved.