digital oil temp gauge

• 2022-02-21

Digital thermometer is one of the types of temperature measuring instruments. According to the different temperature measuring substances and temperature measuring ranges, there are kerosene thermometer, alcohol thermometer, mercury thermometer, gas thermometer, resistance thermometer, thermocouple thermometer, radiation thermometer, optical thermometer, bimetallic thermometer, etc. The digital thermometer can accurately judge and measure the temperature, which is displayed in digital instead of pointer or mercury. Therefore, it is called digital thermometer or digital thermometer.

The digital thermometer adopts imported chip assembly, with high precision and stability, error ≤ 0.5%, internal power supply, micro power consumption, stainless steel shell, solid protection, beautiful and exquisite.The built-in high-energy battery works continuously for ≥ 5 years without laying power supply cable. It is a new field temperature display instrument with high precision, good stability and strong applicability. It is an ideal substitute for the traditional on-site pointer bimetallic thermometer. It is widely used in all kinds of industrial and mining enterprises, colleges and universities and scientific research institutes.

Temperature is the physical quantity that we touch in real time in our daily production and life, but it can't be seen. Only by feeling, we can only feel the approximate temperature value. Although the traditional pointer thermometer can indicate the temperature, it has low precision, inconvenient use and direct display, The appearance of digital thermometer can make people intuitively understand the temperature they want to know.The digital thermometer adopts temperature sensitive elements, that is, temperature sensors (such as platinum resistors, thermocouples, semiconductors, thermistors, etc.) to convert the change of temperature into the change of electrical signal, such as the change of voltage and current. There is a certain relationship between the change of temperature and the change of electrical signal, such as linear relationship, certain curve relationship, etc, This electrical signal can be converted into digital signal by analog-to-digital conversion circuit, i.e. AD conversion circuit. The digital signal is sent to the processing unit, such as single chip microcomputer or PC. the processing unit connects the digital signal with the temperature through internal software calculation to become a temperature value that can be displayed, such as 25.0 ℃, and then through the display unit, such as LED, LCD or computer screen is displayed for observation. This completes the basic temperature measurement function of the digital thermometer.According to the different sensors used, AD conversion circuits and processing units, the digital thermometer has different accuracy, stability and temperature measurement range. Therefore, the digital thermometer that meets the specifications should be selected according to the actual situation.Digital thermometers are hand-held, disk mounted, medical, small volume and so on.