The Use Method and Common Sense of Infrared Thermometer

Infrared Thermometer: The front-end infrared machine is used to identify high-temperature personnel, with high recognition efficiency, and realizes auxiliary temperature sensing of the faces of non-contact dense crowds, which solves the efficiency and controllability of public places.

1.The infrared thermometer cannot measure temperature through glass. Glass has very special reflection and transmission characteristics, so accurate infrared temperature readings are not allowed. But the temperature can be measured through the infrared window. It is best not to use an infrared thermometer to measure the temperature of bright or polished metal surfaces

2. The infrared thermometer can only measure the surface temperature of the object, but not its internal temperature.

3. To locate the hot spot carefully, find the hot spot, use it to aim at the target, and then scan the target up and down until the hot spot is determined.

4. When using, you must pay attention to environmental conditions: smoke, steam, dust, etc. They can block the optical system of the instrument and affect accurate temperature measurement.

5. Use infrared thermometer, please pay attention to the ambient temperature. If you are suddenly exposed to an ambient temperature difference of 20 degrees or higher, please allow the instrument to adjust to the new ambient temperature within 20 minutes.

Infrared Thermometer

The Infrared Thermometer Manufacturers tells us that when an infrared thermometer is used to measure temperature, the infrared energy emitted by the measured object will be converted into an electrical signal on the detector through the optical system of the infrared thermometer. The signal temperature reading shows that there are several important factors that determine accurate temperature measurement. The most important factors are emissivity, field of view, distance to point, and point location. Emissivity, all objects reflect, transmit and emit energy, and only the emitted energy can indicate the temperature of the object.

When an infrared thermometer measures the surface temperature, the instrument can receive all three types of energy. Therefore, all infrared thermometers must be adjusted to only read the emitted energy. Measurement errors are usually caused by infrared energy reflected by other light sources. Some infrared thermometers can change the emissivity. The emissivity values of many materials can be found in the published emissivity table. The fixed emissivity of other instruments is 0.95. The emissivity value applies to the surface temperature of most organic materials, paint or oxidized surfaces. Must use tape or black light paint to be coated on the surface to be tested for compensation. When the tape or paint reaches the same temperature as the substrate, measure the temperature of the tape or paint surface, which is its true temperature.

The ratio of distance to spot. The optical system of the infrared thermometer collects energy from the circular measuring point and focuses it on the detector. Optical resolution is defined as the ratio of the distance from the infrared thermometer to the object to the size of the spot to be measured. The larger the ratio, the better the resolution of the infrared thermometer, and the smaller the spot size to be measured. For example, the Infrared Thermometer For Humans is a good choice. Laser sighting is only used to help aim the measuring point. The latest improvement of infrared optics is the addition of a near focus function, which can accurately measure small target areas and prevent the influence of background temperature. In the field of view, make sure that the target is larger than the spot size of the infrared thermometer. The smaller the target, the closer the target should be. When accuracy is particularly important, make sure that the target is at least 2 times the spot size.