DuncB
Well-Known Member
I have an All in one brew system that I have fitted a SmartPID controller replacement.
This works well but the kettle sensor is in the bottom of the boiler and reads a much lower temperature when in the boiling phase, probably due to the trubtrapper and poor thermal currents. I have to keep an eye on the wort as it heats up because the reading can be 80celsius whilst the wort is visibly boiling. This has issues as the PID software doesn't move into boil mode and allow me to then reduce the power to control the boil rate.
I plan to add another NTC sensor of the correct type but on a long wire that I can put into a thermowell at the top of the liquid this would give a real temperature.
I would need to fit a switch to select between the base sensor for mashing and the thermowell one for boil and cooling phase but I'm not sure what type of switch to get and how to connect up the two sensors, switch and back to the PID.
This works well but the kettle sensor is in the bottom of the boiler and reads a much lower temperature when in the boiling phase, probably due to the trubtrapper and poor thermal currents. I have to keep an eye on the wort as it heats up because the reading can be 80celsius whilst the wort is visibly boiling. This has issues as the PID software doesn't move into boil mode and allow me to then reduce the power to control the boil rate.
I plan to add another NTC sensor of the correct type but on a long wire that I can put into a thermowell at the top of the liquid this would give a real temperature.
I would need to fit a switch to select between the base sensor for mashing and the thermowell one for boil and cooling phase but I'm not sure what type of switch to get and how to connect up the two sensors, switch and back to the PID.