rag_npa
Newbie level 2
I have Constructed a precision Thermometer using RTD as sensor with range -100.0C to +400.0C & Resolution of 0.1C employing Look Up Tables .
But the problem is O/P of ICL7135 ADC increases gradualy at the rate of 0.1C per 10 minuts if we connect a fixed resistor to the I/P insted of RTD to test the instrument.
Could anyone help me how to make it stable with respect to time.
But the problem is O/P of ICL7135 ADC increases gradualy at the rate of 0.1C per 10 minuts if we connect a fixed resistor to the I/P insted of RTD to test the instrument.
Could anyone help me how to make it stable with respect to time.