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Digital temperature sensors
Digital temperature sensors allow to perform more complex measurements and work with the already obtained measurements may be easier than in the case of analog counterparts. The output signal of the digital sensors is transmitted as a string of bits, and their interpretation will need some digital layout.
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Digital temperature sensors - FAQ
The way digital temperature sensors work depends on the specific type of sensor. Digital temperature sensors are often used to measure the temperature in electronic devices (they provide protection against overheating and, consequently, damage to the protected parts of the system). Some sensors intended for precise temperature measurement use silicon measuring elements. The measurement process is usually based on the voltage relationship (emitter-base) or the voltage difference between the transistor junctions. As the temperature increases, the voltage between the base and emitter decreases. In turn, a drop in temperature causes an increase in voltage.
The choice of a temperature sensor should, first of all, be appropriately adapted to the specific application (how the sensor is used). When choosing a sensor, you should pay attention not only to the measurement range, which should be adapted to our expectations, but also to the measurement accuracy. Other important factors determining the choice of a temperature sensor are the installation method, power supply parameters, and the interface responsible for communication.
The most common symptoms of a damaged liquid temperature sensor include incorrect readings (too high or too low). Additionally, damaged sensors sometimes show correct temperatures and sometimes incorrect ones.