Pages: [1]   Go Down
Author Topic: Help reading temperatur with the G_1396 ntc thermistor  (Read 654 times)
0 Members and 1 Guest are viewing this topic.
0
Offline Offline
Sr. Member
****
Karma: 1
Posts: 415
MEGA_Stick_II is here
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

I need to read and display temperature from a G_1396 Thermistor
http://www.specsensors.com/pdfs/ntc_radial_glass.pdf

I'm not sure where to start, the temperature range is non-linear so not sure how to calculate the temp based on the voltage dropped across it.

Any help would be greatly appreciated. THANKS!!!
Logged

Massachusetts, USA
Offline Offline
Tesla Member
***
Karma: 212
Posts: 8967
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

There is a formula for characterizing a thermistor.  You use the voltage across the thermistor to calculate the resistance and the formulas to calculate the temperature from the resistance.

http://www.daycounter.com/Calculators/Steinhart-Hart-Thermistor-Calculator.phtml
Logged

Send Bitcoin tips to: 1L3CTDoTgrXNA5WyF77uWqt4gUdye9mezN
Send Litecoin tips to : LVtpaq6JgJAZwvnVq3ftVeHafWkcpmuR1e

0
Offline Offline
Sr. Member
****
Karma: 1
Posts: 415
MEGA_Stick_II is here
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Thanks! that helped.

Your post led me to this,
http://www.arduino.cc/playground/ComponentLib/Thermistor2
http://www.arduino.cc/playground/ComponentLib/Thermistor4

Think I have enough now to at least set something on fire.  smiley-twist
Thanks again!

EDIT
And here is a good tutorial
http://web.cecs.pdx.edu/~gerry/class/EAS199B/howto/thermistorArduino/thermistorArduino.pdf
« Last Edit: November 06, 2012, 07:43:36 am by Jassper » Logged

Pages: [1]   Go Up
Jump to: