I believe many operators have a variety of questions when using infrared thermometers. Solving the problem can only work better. Nanjing Ningbo Analytical Instrument Co., Ltd. arranges several common technical questions and answers for infrared thermometers First, why use infrared thermometer? Infrared thermometers use infrared technology to quickly and easily measure the surface temperature of objects. Measure temperature readings without mechanical contact with the measured object. Just aim, press the trigger and read the temperature data on the LCD display. Infrared thermometers are lightweight, small in size, easy to use, and can reliably measure hot, dangerous, or hard-to-reach objects without contaminating or damaging the object being measured. Infrared thermometers can measure several readings per second, while contact thermometers require several minutes per measurement. Second, infrared thermometer how to work? Infrared thermometers receive invisible infrared energy emitted by a variety of objects themselves. Infrared radiation is part of the electromagnetic spectrum. It includes radio waves, microwaves, visible light, ultraviolet, R-rays, and X-rays. Infrared is located between visible light and radio waves. Infrared wavelengths are usually expressed in micrometers. The wavelength range is 0.7 micrometers to 1000 micrometers. In fact, 0.7 micrometers to 14 micrometers are used for infrared thermometers. Third, how to ensure the accuracy of infrared thermometer temperature measurement? The unambiguous understanding of infrared technology and its principles is its precise temperature measurement. When the temperature is measured by an infrared thermometer, the infrared energy emitted by the measured object fa is converted into an electric signal on the detector by the optical system of the infrared thermometer. The temperature reading of the signal is displayed. There are several important factors that determine the precise temperature measurement. The most important factors are the fa reflectivity, the field of view, the distance to the spot, and the location of the spot. Fa radiance, all objects will reflect, transmit and fa radiate energy, only fa radiates energy to indicate the temperature of the object. When the infrared thermometer measures the surface temperature, the instrument can receive all three of these energy levels. Therefore, all infrared thermometers must be adjusted to read only fa shot energy. Measurement errors are usually caused by infrared energy reflected by other light sources. Some infra-red thermometers can change the fa-ejectivity, and a variety of materials can be found in the published fa-rate table. Other instruments were fixed with a prefabricated fa ratio of 0.95. This fa-radiation value is the surface temperature of most organic materials, paints, or oxidized surfaces that will be compensated with a tape or plain black lacquer applied to the surface under test. When the tape or paint is brought to the same temperature as the base material, the temperature of the tape or paint surface is measured as its true temperature. Distance to light spot ratio, the infrared thermometer's optical system collects energy from a circular measurement spot and focuses on the detector. The optical resolution is defined as the ratio of the distance from the infrared thermometer to the object to the measured spot size (D :S). The larger the ratio, the better the resolution of the infrared thermometer and the smaller the measured spot size. Laser aiming, only to help aim at the measuring point. The latest improvement in infrared optics is the increase in near-focus characteristics, which provides accurate measurements in small target areas and also prevents background temperature effects. The field of view ensures that the target is larger than the spot size measured by the infrared thermometer. The smaller the target, the closer it should be to it. When accuracy is particularly important, make sure that the target is at least 2 times the spot size. There are several important things to keep in mind when using an infrared thermometer: 1, only measuring the surface temperature, infrared thermometer can not measure the internal temperature. 2, can not be measured through the glass, the glass has a very special reflection and transmission characteristics, does not allow accurate infrared temperature readings. However, temperature can be measured through the infrared window. Infrared thermometers are best not used for temperature measurement on polished or polished metal surfaces (stainless steel, aluminum, etc.). 3, positioning hotspots, to find hot spots, the instrument aims at the target, and then on the target for scanning up and down movement, until the determination of hot spots. 4, pay attention to environmental conditions: steam, dust, smoke and so on. It blocks the instrument's optical system and affects accurate temperature measurement. 5. Ambient temperature, if the infrared thermometer is suddenly exposed to an ambient temperature difference of 20 degrees or higher, allow the instrument to adjust to a new ambient temperature within 20 minutes. What are the most common infrared thermometer applications? 1. The automotive industry: diagnostic cylinders and heating/cooling systems. 2. HVAC: Monitors air stratification, supply/return records, and furnace performance. 3. 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Fourth, how to infrared thermometer temperature measurement?
In order to measure the temperature with an infrared thermometer, the infrared thermometer is aimed at the object to be measured, and the temperature data is read out on the LCD of the instrument according to the trigger to ensure that the ratio of the distance and the spot size and the field of view are arranged.