Hi all
Is there a way to acquire the current value of a capillary thermometer? I'd like to read the temperature of a boiler which is equipped with one of these thermometers and there is no easy way to physically install another sensor...
The current thermometer is something like this:
Thanks
If you want to read when the temperature is to high or low that could be done with a reflective IR device. I did this to monitor my water softener and power down its timing motor when not needed.
Is your temp sensor in water or is it on the surface of the boiler or pipe?
Hi and thank you for your reply.
The sensor is in the water. Because the water is not always flowing it can't be installed on the pipes and, because it's a fireplace with integrated boiler the temperature of the metallic surface can be different from the water inside.
I'd like to monitor the temperature with the best possible resolution, I am also considering to find a way to get the needle position (although I would have no idea how to attach it mechanically...)
These are usually installed in a metal tube with some silicon heat conductive compound. You could always replace this one with one with a 4-20ma output.
If you can mount a temp sensor on the actual boiler surface not the outer cover you would get fairly proportional results to the dial unit. Take some reading and compare to the dial then apply an offset. Can't hurt to try it.
