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. Like all Fieldpiece products, the SOX3 Combustion Check Tool was designed to help HVACR professionals do more with their tools. From custom fuels to field-replaceable oxygen sensors, the SOX3 can be trusted to measure up for any furnace tuning job.

Fieldpiece Combustion Checker, LCD Display, 9 V Alkaline Battery Power Supply, 0 - 25% Oxygen Measuring Range, Yellow, -58 to 1000 deg F Ambient

• Automatic electric pump with pause - pump works automatically so there's no hand pumping, and techs can pause the pump at any time to save battery life
• Field-replaceable oxygen sensor the SOX3 oxygen sensor indicators tells techs when a new sensor is needed
• With calibration data stored on the sensor, it can be swapped out in seconds, so there's never a need to send your instrument in for calibration
• Hands-free testing the threaded R-cone holds the barrel firmly in the flue, and the strong magnet on the back of the SOX3 holds the instrument firmly to the side of the flue, while the internal electric pump does all the work
• Techs simply view the results on the triple line display
• Combustion efficiency - quickly calculated and displayed on the screen, the SOX3's combustion efficiency calculation is great measurement to help determine the health of a furnace
• Custom fuels - not only does the SOX3 test natural gas, oil no 2, and propane, but it can be quickly, and easily programmed to test any type of fuel
• So non-conventional furnaces are just as easy to tune and conventional furnaces
• Measures flue temperature and %O2
• Calculates %CO2, %EA and combustion efficiency
• Hands-free testing with magnet, R-cone, and automatic pump
• Programmable for custom fuel types
• Fast, easy, furnace tuning
• 69.8 mm W x 45 mm H x 211.7 mm D dimension
• Auto off after 15 min
• 32 - 122 deg F operating temperature, less than 75% RH
• Four digit liquid crystal display(LCD) with maximum reading of 9999
• SOX3 combustion check, RSOX3 barrel and thermocouple handle, RCONE2 threaded barrel lock, RAOX9 filter accessory kit, padded, blow-molded case
• With auto pump