Dumb thermistor question

[R.Lewis]

I have a NTC thermistor with a nominal resistance of 100R at 25 degC and a
beta value of 3600.
How do I calculate its resistance at 80 degC (or any other temperature) from
this?

Thanks in anticipation

 

[cpemma]

I have a NTC thermistor with a nominal resistance of 100R at 25 degC
and a beta value of 3600.
How do I calculate its resistance at 80 degC (or any other
temperature) from this?

R @ T = R @ 25 * e^(B/(T + 273) - B/(25 + 273))

where T is Centigrade

so R @ 80 = 100 * e^(3600/353 - 3600/298)

(e = 2.7183)

 

[Jim Thompson]

I have a NTC thermistor with a nominal resistance of 100R at 25 degC and a
beta value of 3600.
How do I calculate its resistance at 80 degC (or any other temperature) from
this?

Thanks in anticipation

IIRC, it's:

R = Ro*exp(Beta*(1/T-1/To)) T in °K

...Jim Thompson

 

[Siol]

Homework?



Siol