Quote Originally Posted by ruijc View Post
Hi Squibcakes,

Just a question,

Does that thermistor has a linear variation with temperature ?
Suprisingly no it's not that linear. I plugged in the values from the data sheet into excel and created a graph of the curve. It's linear on the higher temps (say 90C +). I wired this up on the bench as per the diagram I posted above and it seems to be working. I've seen mention of the LM35 sensor which is linear and has a higher max temp range which I think would be better but finding it hard to source these...

Quote Originally Posted by ruijc View Post
Where do you get this thermistor ? Any special supplier ?
RS sell them pretty cheaply.
http://australia.rs-online.com/web/s...tsa0wf104fe1b0


Thanks