complete new here, appreciate all the help. I took up a project to control temperature in a household water heater.
I am looking to control a 240V 3.6kw water heating element in a water heater to be exact.
I want to control the water temperature by using digital potentiometer. For example, If the temperature in the tank goes down than the required degree, the RTD Sensor activates the digital potentiometer depending on the required degree the Digipot activates heating element with required voltage to boil the water to desired temperature.
The temperature varies from 20 to 80 degrees. with a step size of 5ohms.
My question is:
1)Can I use and how to use a digipot for this setup?
2)what kind of digipot is required?