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- Resistance at 25°C: 10K ±1%
- B25/50: 3950 ±1%
- Thermal time constant ? 15 seconds
- Thermistor temperature range -55°C to 125°C
- Wire temperature range -55°C to 105°C
- 28 AWG PVC Wire
- Diameter: 3.5mm/0.13in
- Length: 18in/45cm
Note that even though the thermistor can go up to 125°C the cable itself maxes out at 105°C so this thermistor is not good for measuring very very hot liquids
Wiring
We can use a simple voltage divider circuit to measure the voltage across the thermistor.
Vout = Rt / (Rt + Rs) * Vin
Say the fixed resistor is 10K and the variable resistor is called R - the voltage output (Vo) is:
Vout = Rt / (Rt + 10K) * Vin
Remember that when you measure a voltage (Vi) into an Arduino ADC, you'll get a number.
ADC value = Vi * 1023 / Varef
References
Reference | URL |
---|---|
Thermistor | https://learn.adafruit.com/thermistor/overview |
Using a Thermistor | https://learn.adafruit.com/thermistor/using-a-thermistor |
Temperature Table | https://cdn-shop.adafruit.com/datasheets/103_3950_lookuptable.pdf |
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