I recently found sensor from Elektrobock PT712 and I found datasheets from it, but now I don´t know how to turn RAW readings to voltage and then to degrees celsius (2 steps). The thermistor has name 343F . Thanks for help
//EDIT: NTC - 103 F 343 F
00000000-NTC-Chip.pdf (295 KB)
Without a lot more study I have just a rough idea what the device does. I presume its resistance varies with temperature. If so you need to set up a voltage divider so that the Arduino's ADC can detect the varying voltage and then calculate the device's resistance. You then need a formula to convert the resistance to the appropriate temperature scale.
It would be useful to have an independent temperature measuring device to validate your wiring and your code.
...R
Ntc termistor 10k Bvalue 3435
Take a look at the setup in the attatcment (norwegian, but math and code should be understood..i hope)
(google translate..)
Change all '3950' to '3435'
As: Sensor is 1% tolerance, 5V isnt 5V, Resistor is 1%(5%?), Beta is 1%: ==>
Use a variable e.g. float sr=0.27; for the serial resistance when calculating
Change this value so printout temp is correct near room temp.
ardino-ntc-outdoor-regning.pdf (83.3 KB)