The error of the digital thermometer is ≤0.5%, so the traditional mercury thermometer is slowly replaced, because the digital thermometer is very easy to use. Digital thermometer is a temperature tester with high precision, good stability and strong performance.
Digital thermometers use temperature-sensitive elements, that is, temperature sensors (such as platinum resistance, thermocouples, semiconductors, thermistors, etc.), to convert temperature changes into electrical signal changes, such as voltage and current changes, temperature changes and electrical signals. The change has a certain relationship, such as a linear relationship, a certain curve relationship, etc. This electrical signal can use an analog-to-digital conversion circuit, that is, an AD conversion circuit to convert the analog signal into a digital signal, and then send the digital signal to a processing unit, such as a single-chip computer or a PC. Wait, the processing unit associates this digital signal with the temperature through internal software calculation, and becomes a temperature value that can be displayed, such as 25.0 degrees Celsius, and then displays it through a display unit, such as LED, LCD or computer screen, for observation. This completes the basic temperature measurement function of the digital thermometer.
Ok, that's it for the introduction to digital thermometers, thank you.
