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TMP-DS18B20-WP
Digital temperature sensor (1wire) waterproof, 0.5°C resolution from -10°C to +85°C. Temperature range -55°C to 125°C
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WATERPROOF DS18B20 temperature sensor + Extra
Digital temperature sensor (1wire) waterproof, 0.5°C resolution from -10°C to +85°C. Temperature range -55°C to 125°C
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Here is a pre-wired and waterproof DS18B20 temperature sensor. Convenient when measuring a temperature in a remote location or in a humid environment.
Although the sensor is able to withstand temperatures up to 125°C, we suggest staying below 100°C because of PVC cladding (the one used to make the sensor waterproof).
As it is a digital sensor, we are immune to signal degradation... even over a long distance!
This digital sensor uses the 1-wire protocol (Arduino has a 1-wire library), is surprisingly accurate (±0.5°C over most of the measuring range) and provides information with 12 bit accuracy directly from the analog converter -> digital of BS18B20.
This sensor works perfectly with micro-controllers with a simple digital pin. You can even connect several sensors to the same digital pin, each of the sensors has a unique 64-bit identifier (engraved in the sensor at the factory) to differentiate them from each others. Usable with voltages 3.0 and 5.0V.
The only gray area is that it uses the Dallas 1-wire protocol, which is quite complex and requires a lot of code to handle the communication. If you want a simple and trivial temperature sensor, we suggest the TMP36 which only requires an analog input.
This sensor is delivered with a 4.7k resistor. It is used as a pull-up to bring the data pin back to +VCC while using the sensor.
Cable specifications:
Technical specifications of the DS18B20:
Technical data sheet
We do not have a dedicated tutorial yet. But as suggested by our supplier Adafruit, you can implement this sensor using: