Thermometer emissivity and advantages explained - Database & Sql Blog Articles

The emissivity and advantages of the thermometer explain the emissivity of the most common materials of the thermometer. There are two points: The first point: the emissivity of the thermometer refers to the ability of the object to radiate infrared energy. The energy of the radiation is indicative of the temperature of the object. The emissivity ranges from 0 (clean mirror) to 1.0 (black). The emissivity of most organisms, coatings or oxidized surfaces is close to 0.95. Most Jintai's in-line thermometer sensors have adjustable emissivity characteristics that ensure accuracy when measuring other materials such as shiny metals. . Second point: If the thermometer you are using has a fixed preset emissivity of 0.95 and you need to measure the flash object, you can cover the surface of the object by spraying, black flat powder or masking tape. The temperature of the surface of the covered or sprayed coating is measured. This is the real temperature. Explain the advantages of using fixed on-line thermometers Infrared technology has been successfully applied to industrial and research settings. With the continuous innovation and development of cost reduction and reliability improvement, infrared technology has realized sensors that can provide smaller units of measurement. . All of these factors have prompted infrared technology to receive widespread attention from new applications and users. Resolving Non-Contact Temperature Advantage Non-Contact Thermometers Save Time - Typical infrared temperature measurements take less than 500 mS. No energy interference or energy loss. There is no risk of contamination and mechanical impact on the target. The main factor in correct infrared temperature measurement is to measure the moving target. Measure dangerous or inaccessible objects (high voltage components, large measuring distances). Measuring high temperature (above 1300 °C) Highlights In order to ensure correct non-contact infrared temperature measurement, the following points must be known: the distance to the target (spot) is higher than the ambient temperature of the field of view. The target (spot) distance collects the energy of the circular measurement point from the optical system of the infrared sensor and converges it on the detector. The optical resolution is determined by the ratio of the distance from the device to the object to the size of the measured spot (D: S ratio). The larger the ratio, the better the resolution of the device, allowing you to measure smaller spots from farther distances. The latest innovation in infrared optics is the addition of near-focus characteristics, providing accurate measurement of small target areas without unwanted background temperatures. The infrared thermometer field of view ensures that the target is larger than the spot size the device is measuring. The smaller the goal, the closer you should be. When accuracy is especially important, make sure the target is at least twice the spot size. The environmental conditions of the thermometer are taken care of the environmental conditions of the work area. Steam, dust, smoke, etc. can block the lens of the device, preventing accurate measurements. Other conditions such as noise, electromagnetic fields, or vibration should also be considered before installation begins. Protective housing, air purification, and air or water cooling protect the sensor and ensure accurate measurements. Therefore, for example, Jintai's two-color thermometer has an air purification function. Ambient temperature (ambient temperature) If the thermometer is exposed to a sudden temperature difference of more than 20 ° C, please keep it for at least 20 minutes to adapt to the new ambient temperature. The fixed sensor is optimized for performance over a specific ambient temperature range. For example, the JTCIN online thermometer can withstand ambient temperatures up to 180 ° C (356 ° F) (no water or air cooling). For high ambient temperatures, Jintai Fixed Thermometers are available in air cooling and water cooling options as well as accessories such as high temperature resistant covers. Emissivity Emissivity is a measure of the ability of an object to radiate infrared energy. The energy of the radiation is indicative of the temperature of the object. The emissivity ranges from 0 (clean mirror) to 1.0 (black). Learn about emissivity and emissivity values ​​for various materials.