Temperature Controller

Required source code for temperature controller which has a selectable sensor such as RTD, J type, k type and with a selection of ON/OFF action or PID mode of operation. 3.5 inch touch control screen is used to display PV and SV value. Some other parameters like input voltage and load current is also displayed on touch screen with a edit-able option to display company name on touch screen. Also gives low voltage or high voltage alarm when the input voltage is low or high of the set value. temp range is -100 degree C to +1200 degree C with an accuracy of 2 degree C when mode of operation is ON/OFF action and 0.1 degree C when mode of operation is PID. The PID is auto tune and no parameter is to be fed and it also operates a relay when is ON for 50 secs and OFF for 10 secs. to operate a blower fan (this process is ON till the controller is ON). It also incorporates a float switch to monitor liquid level. Whenever the level goes low it stops the heating/cooling operation and gives a warning of low level on touch screen.