Infrared thermometer measurement method step
Infrared thermometer, commonly known as point temperature gun, uses the principle of infrared transmission of numbers to sense the temperature of the surface of an object, and is suitable for measuring high-temperature objects. In power plants, it is convenient for operators to measure the temperature of equipment anytime and anywhere to check whether the equipment is working properly.
Infrared thermometer consists of optical system, photoelectric detector, signal amplifier, signal processing, display output and other parts. The optical system gathers the target infrared radiation energy within its field of view. The size of the field of view is determined by the optical parts of the thermometer and their positions. The infrared energy is focused on the photodetector and converted into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is converted into the temperature value of the measured target after correction according to the internal treatment algorithm of the instrument and the target emissivity.
Measurement methods:
This thermometer is a portable thermometer. It is relatively simple to use. Use the "SEL" and "SET" keys to set the emissivity, temperature unit, and switch between maximum and minimum values. Its measurement The method mainly includes the following steps:
1. Select the ℃ or ℉ unit and emissivity as needed.
2. Aim the infrared ray of the thermometer at the object to be measured, press the measurement key to start measurement, release the measurement key to keep the data, and repeat the measurement several times.
3. By pressing the "SEL" key, read the maximum value, minimum value, average value and maximum difference value of the temperature of the measured object.
Advantages of infrared thermometers
Non-contact temperature measurement by receiving infrared rays radiated by the object under test has many advantages. In this way, the temperature of objects that are difficult to reach or are in motion can be measured without any problem, such as materials with poor heat transfer properties or very small heat capacity. The short response time of the infrared thermometer enables rapid implementation of the regulation loop. Thermometers have no parts that wear out, so there are no ongoing costs associated with using a thermometer. Especially for very small objects to be measured, such as contact measurement, a large measurement error will occur due to the thermal conductivity of the object. Thermometers can be used without any problems here, and for corrosive chemicals or surfaces such as paint, paper and plastic rails. Through long-distance remote control measurement, it can be far away from the dangerous area, so that the operator is not in danger.
