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High Range Carbon Monoxide Replacement Sensor for AreaRae / MultiRae / ToxiRae Pro

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Genuine High Range Carbon Monoxide Replacement Sensor for AreaRae / MultiRae / ToxiRae Pro gas detectors from Rae Systems by Honeywell.

All specifications have been verified under the following environmental conditions:

  • Temperature: 68°F
  • Relative Humidity (non-condensing): 50%
  • Ambient Pressure: 1 atm (1,013 mbar)

Refer to the Technical Note TN-114 for a glossary of terms used on this page

Additional information

Weight .5 lbs


Sensor Type Electrochemical
Range 0-2,000 ppm
Resolution 10 ppm
Bias/Equilibration No bias/10 minutes after installation
Drift < 2% signal loss/month
Storage Life 6 months in sealed container
Operating Life 2 years in air
Calibration Gas 100 ppm Carbon Monoxide in Air
Zero Gas 99.9% Nitrogen
Temperature Range -4°F to 122°F
Storage Temperature Range 32°F to 68°F
Pressure Range Atmospheric ±10%
Operating Humidity 15 to 90% rH non-condensing
Warranty 2 years from date of shipment

Cross Sensitivities

Response w/o Filter1 & With Filter2
10 ppm
0 to 1 ppm/NT3
Ethanol 200 ppm 0 ppm/0 ppm
100 ppm
<30 ppm/ NT
100 ppm
<50 ppm/NT
Hydrogen Sulfide (H2S)
15 ppm
0 ppm/0 ppm
Nitric Oxide 35 ppm -10 to 0 ppm4/0 ppm
Nitrogen Dioxide
5 ppm
0 ppm/0 ppm
Sulfur Dioxide 5 ppm 0 ppm/0 ppm

1 – New sensor specs. Used sensors show increasing response to VOCs.
2 – A disk shaped activated carbon filter placed on top of the CO sensor helps reduce the response to VOCs
3 – Not tested (NT)
4 – CAUTION! Negative cross sensitivities may cuase the sensor to produce lower readings than the true concentration of gas in ambient air.


Technical Note: TN-114 – Sensor Specifications and Cross Sensitivities for High Range Carbon Monoxide Replacement Sensor

Disclaimer: Technical Note TN-114 presents specifications, cross sensitivities and calibration information on select Rae Systems by Honeywell sensors. All specifications presented in this Technical Note reflect the performance of standalone sensors. For instrument specifications, please refer to product datasheets and manuals. Actual sensor characteristics may differ when the sensor is installed in different instruments. As sensor performance may change over time, specifications provided are for brand new sensors.

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