Repairing a fleet of warmer(s) that currently have an old and obsolete temp controller installed inside. There are lots and lots of spare controllers available on the market I have bought a couple to test. The exercise I am trying to repair quite an expensive unit in the best practical way.
So the replacement has arrived with a thermocouple that measures about 12k ohms where the installed thermocouple in our warmer measures about 4 ohms at the same temp.
My question is whether there is a solution to use this much lower resistance thermocouple as its way way better for us in the long run. Is there a linear resistance converter available to do something like this in an easy way? I would say roughly that for each 2k ohms the new thermocouple drops, the installed one will drop say approx 1 ohm.
The controller does come with a calibration solution but only +/- 10deg. Thoughts anyone?
So the replacement has arrived with a thermocouple that measures about 12k ohms where the installed thermocouple in our warmer measures about 4 ohms at the same temp.
My question is whether there is a solution to use this much lower resistance thermocouple as its way way better for us in the long run. Is there a linear resistance converter available to do something like this in an easy way? I would say roughly that for each 2k ohms the new thermocouple drops, the installed one will drop say approx 1 ohm.
The controller does come with a calibration solution but only +/- 10deg. Thoughts anyone?