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How much do you know about the principle of thermometer?

Jun 06, 2023

How much do you know about the principle of thermometer?

 

The temperature measuring gun is also called a thermometer. This thing may be unfamiliar to us. It mainly uses infrared temperature measurement technology to provide temperature measurement in production and life, so it is also called an infrared temperature measuring gun. This technology plays an important role in product quality control and monitoring, equipment online fault diagnosis, safety protection and energy saving. It has won the favor of consumers for its advantages of fast response time, non-contact, safe use and long service life. favor. Let's briefly understand the advantages of a temperature measuring gun and how it works.


Advantages of Infrared Temperature Gun
1. High accuracy. Another advanced feature of infrared temperature measuring guns is accuracy. Usually the accuracy is within 1 degree. This performance is especially important when you do preventive maintenance.


2. It is easy to use, and the infrared temperature gun can quickly provide temperature measurement. In the time it takes to read a leak connection point with a thermocouple, the temperature of almost all connection points can be read with an infrared thermometer. Plus, because the infrared thermometers are solid, lightweight (all under 10 ounces), and easy to carry in a holster when not in use. So you can carry it when you are doing factory inspections and daily inspections.


3. Good safety, safety is the most important benefit of using infrared temperature measuring gun. Unlike contact thermometers, infrared temperature guns can safely read inaccessible or inaccessible target temperatures, and you can read the target temperature within the range allowed by the instrument.


The principle of temperature gun
The infrared temperature measuring gun is composed of optical system, photoelectric detector, signal amplifier, signal processing, display output and other parts. The optical system concentrates the target infrared radiation energy in its field of view, and the size of the field of view is determined by the optical parts of the thermometer and its orientation. When measuring the temperature of the target with an infrared radiation thermometer, it is first necessary to measure the infrared radiation of the target within its band range, and then the temperature of the measured target is calculated by the thermometer.


The single-color temperature gun is proportional to the radiation in the band, and the two-color thermometer is proportional to the ratio of the radiation in the two bands. Infrared energy is focused on a photodetector and converted into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is transformed into the temperature value of the measured target after being corrected and compensated by the built-in algorithm and target emissivity of the instrument.


In the past two decades, infrared temperature measuring guns have developed rapidly in technology, their performance has been continuously improved, and their scope of application has also been continuously expanded. Not only can it be used in industry, but also in daily medical treatment, from metallurgy to temperature measurement, it is widely used.

 

2 Temperature meter

 

 

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