What are the methods of infrared thermometer measurement
Infrared thermometers are commonly known as point temperature guns, which sense the surface temperature of objects through the principle of infrared transmission of numbers, and are suitable for the measurement of high-temperature objects. In the power plant, it is convenient for the operating personnel to measure the temperature of the equipment anytime and anywhere to check whether the equipment is working normally.
The infrared thermometer is composed of optical system, photoelectric detector, signal amplifier, signal processing, display output and other parts. The optical system gathers 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 position. 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 converted into the temperature value of the measured target after being corrected according to the algorithm of the internal treatment of the instrument and the emissivity of the target.
Measurement methods:
The thermometer is a portable thermometer, and the method of use is relatively simple. The emissivity, the temperature unit, and the switch between the maximum and minimum equivalent values are set by the two keys "SEL" and "SET". Its measurement method is mainly There are the following steps:
1. Select ℃ or ℉ unit and emissivity as required
2. After aiming the infrared rays of the thermometer at the object to be measured, press the measurement button to start measurement, release the measurement button to hold the data, and repeat the measurement several times
3. By pressing the "SEL" key, read the maximum, minimum, average and maximum difference of the temperature of the measured object.
Advantages of Infrared Thermometers
Non-contact temperature measurement by receiving infrared rays radiated from the object to be measured has many advantages. In this way, difficult-to-reach or moving objects can be measured without problems, such as materials with poor heat transfer properties or low heat capacity. The short response time of the infrared thermometer enables fast implementation of the control loop. Thermometers have no wearing parts, so there are no ongoing costs as there are with thermometers. Especially for small objects to be measured, such as contact measurement, there will be a large measurement error due to the thermal conductivity of the object. Here the thermometer can be used without any problems, and for aggressive chemicals or surfaces, such as on paint, paper and plastic rails. Through the long-distance remote control measurement, it can stay away from the dangerous area, so that the operator will not be in danger.
