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Testo 310

BobC
BobC Member Posts: 5,521
in Strictly Steam

i have a 10 year old Testo 310 combustion analyzer that has only been used about a dozen times. i bought it to test the combustion on my own steam system. It now tells me the o2 sensor is bad. I peeled it apart with some difficulty and the sensor in the unit is a 0390 0285.

The Testo site does not accept that number. This is the original 310 not the 310-II, does anyone know of a replacement part number? They charge a small fortune so I don't want to just guess

Smith G8-3 with EZ Gas @ 90,000 BTU, Single pipe steam
Vaporstat with a 12oz cut-out and 4oz cut-in
3PSI gauge
Robert_H

Comments

  • psb75
    psb75 Member Posts: 1,036

    I sent my Testo 310 back to them (through my supply house F.W. Webb) when it said that the O2 sensor was bad. They relaced a bunch of stuff and recalibrated it. Yes it was pricey. I wasn't aware that you could replace the sensor yourself. Your whole unit then needs to be recalibrated. My 310 is about 3-4 years old.

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