I've decided to use the DS18B20 temperature sensor as it is waterproof. Since my water quality monitoring project requires the sensor to be immersed in the water, so this type of water temperature sensor is very suitable to be used in my project.
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| DS18B20 Temperature Sensor |
The DS18B20 Digital Temperature Probe provides 9 to 12 bit (configurable) temperature readings which indicate the temperature of the device. Information is sent to/from the DS18B20 over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source. Each DS18B20 contains a unique silicon serial number, multiple DS18B20 temperature sensors can exist on the same 1-Wire bus. This allows for placing temperature sensors in many different places which is a perfect sensor to be used for monitoring purpose.
The specification of the water temperature is as below:
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| DS18B20 Temperature Sensor Specification |
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