Sajjadkhan
Full Member level 5
- Joined
- Sep 25, 2010
- Messages
- 307
- Helped
- 17
- Reputation
- 34
- Reaction score
- 16
- Trophy points
- 1,298
- Location
- Rawalpindi,Pakistan
- Activity points
- 4,199
Oi to all guys. I need a little help. Till now i have been measuring temperature up to 100 degree centigrade with LM35. Now i have to measure temperature up to 250-300 degrees.
Thermistor is best for it as it is small in size but highly nonlinear. Its equation is given as Steinhart-Hart in which there are 3 variables A,B,C which is usually given in datasheet.
Problem: In my Area there are thermistors without any model except their resistance at 25 degrees. Is there any way to find these 3 variables.
One way is to acquire its graph but how will i do it. I need a constant temperature to measure its value and then increase temperature and that is quite difficult.
Thermistor is best for it as it is small in size but highly nonlinear. Its equation is given as Steinhart-Hart in which there are 3 variables A,B,C which is usually given in datasheet.
Problem: In my Area there are thermistors without any model except their resistance at 25 degrees. Is there any way to find these 3 variables.
One way is to acquire its graph but how will i do it. I need a constant temperature to measure its value and then increase temperature and that is quite difficult.