Highly accurate Oxygen Sensor
32°F to 122°F at <75% RH
Stated accuracy at 23°C ±5°C
28 Hours Typical Alkaline
The SOX3 Combustion Check is a great tool to easily tune furnaces when a full combustion analysis isn't necessary. Designed specifically for HVACR pros, the SOX3 provides all the essential measurements needed to tune most combustion equipment. It directly measures %O2 and flue temperature, and calculates %CO2, %Excess Air, and combustion efficiency.
Reviewed by 1 customer
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Comments about SOX3, Combustion Check Meter:
out of the box and the sensor indicator did not work.this was the second one with the same problem. call the company and tech dept. told me they have an issue with the sensor indicator not working or after the Meter is used a few times it stops working.you won't know when it needs to be replaced.