Soil temperature (DS18B20) sensor probe

Sensor specifications (DS18B20)

Measurement range: [-55 ºC,+125 ºC]

Output voltage (0ºC): 500 mV

Resolution: 12 bits (0.0625 ºC)

Accuracy: ±0.5 ºC (range -10 ºC ~ +85 ºC)

Supply voltage: 3.0 ~ 5.5 V

Response time: 1.65 seconds (63% response from +30 to +125 °C)

     Typical consumption: 1 mA

     Conversion time: 750 ms

The DS18B20 is a temperature digital sensor which provides an accurate measurement and a high resolution (of up to 0.065 ºC) which communicates with the Waspmote’s microcontroller through the 1-Wire bus. It has been encapsulated in a plastic seal that isolates it from humidity, thus allowing to use it in wet environments as long as for temperature measurement in soil or liquids.