Infrared Thermometer Use Method and Common Sense

Infrared Thermometer: It uses the front-end infrared machine to identify high-temperature personnel, with high recognition efficiency, and realizes the auxiliary temperature sensing of the face of non-contact intensive people to solve the efficiency and controllability of public places.

1. Infrared thermometers 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. Infrared thermometers are best not used to measure the temperature of bright or polished metal surfaces

2. The infrared thermometer can only measure the surface temperature of the object, 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 we use it, we must pay attention to environmental conditions: smoke, steam, dust, etc. They will block the optical system of the instrument and affect accurate temperature measurement.

5. When using an infrared thermometer, pay attention to the ambient temperature. If it is suddenly exposed to an ambient temperature difference of 20 degrees or higher, allow the instrument to adjust to the new ambient temperature within 20 minutes.

Infrared Thermometer

The Infrared Thermometer Manufacturer tells us that when the 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 temperature of the signal The reading shows that there are several important factors that determine accurate temperature measurement. The most important factors are the emissivity, the field of view, the distance to the spot, and the location of the spot. Emissivity, all objects will reflect, transmit and emit energy, and only the emitted energy can indicate the temperature of the object.

When the infrared thermometer measures the surface temperature, the instrument can receive all three types of energy. Therefore, all infrared thermometers must be adjusted to read only 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. Other instruments have a fixed emissivity of 0.95. The emissivity value is for the surface temperature of most organic materials, paints or oxidized surfaces. It is necessary to use a tape or flat black paint to coat the measured surface to compensate. When the tape or paint reaches the same temperature as the base material, 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 spot and focuses it on the detector. The 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 Basen Infrared Thermometer is a good choice. Laser aiming is only used to help aim at the measuring point. The latest improvement of infrared optics is to increase the near focus feature to provide accurate measurement of small target areas and prevent the influence of background temperature. The field of view, ensure that the target is larger than the spot size of the infrared thermometer. The smaller the target, the closer it should be. When accuracy is particularly important, make sure that the target is at least 2 times the spot size.