Doble M4000 Temp Sensor Help

[bec51392]

Hi, I don't remember the pinouts, but if ever the unit goes bad, it's usually either the thermistor or the humidity sensor. Doble (if I remember well) sells replacements for around $1,600 and the thermistor is $1.00 and the humidity sensor is around $10. There's a part number on the humidity sensor and that's the one that usually goes bad. The thermistor does not have a part number, but I figured it out my measuring it's resistance at two temperatures and found some with matching specs.

The sensor communicates with the main unit serially, so you won't damage anything by just trying several of possible combinations.

Good luck.

Do you happen to have part numbers or a link?
I have the same 200c reading issue. I pulled the metal cage off the top of the unit and one of the wires going to the thing-a-ma-bob on the what-cha-ma-call-it is no longer connected. Too small to try and solder so I wanted to just replace that whole part sticking out of the top.