Precautions for the use of infrared thermometers and their industrial applications
Infrared temperature measurement technology is used in the production process for product quality control and monitoring, equipment online fault diagnosis and safety protection, as well as energy conservation
Played an important role. In the past 20 years, non-contact infrared human body thermometers have rapidly developed in technology, with continuously improved performance, enhanced functionality, an increasing variety, and an expanding range of applications. Compared to contact temperature measurement methods, infrared temperature measurement has advantages such as fast response time, non-contact, safe use, and long service life. The non-contact infrared thermometer includes three series: portable, online, and scanning, and is equipped with various options and computer software. Each series includes various models and specifications. The correct selection of infrared thermometer models is crucial for users in different specifications. When using an infrared thermometer, what issues should be noted? To measure temperature, align the instrument with the object to be measured, read temperature data on the instrument's LCD using a trigger, and ensure that the distance to spot size ratio and field of view are properly arranged.
Issues to pay attention to when using infrared thermometers:
1. Only measuring surface temperature, infrared thermometer cannot measure internal temperature.
2. Wavelength above 5um cannot be measured through quartz glass for temperature measurement. Glass has special reflection and transmission characteristics, and accurate infrared temperature readings are not allowed. But temperature can be measured through an infrared window. Infrared thermometers are not suitable for measuring temperature on bright or polished metal surfaces (such as stainless steel, aluminum, etc.).
3. To locate a hotspot, aim the instrument at the target and then scan up and down on the target until the hotspot is identified.
4. Pay attention to environmental conditions: steam, dust, smoke, etc. It obstructs the optical system of the instrument and affects accurate temperature measurement.
5. The ambient temperature, if the thermometer is suddenly exposed to an ambient temperature difference of 20 ℃ or higher, allows the instrument to adjust to the new ambient temperature within 20 minutes.
The correct selection of infrared thermometer can be divided into three aspects:
(1) In terms of performance indicators, such as temperature range, spot size, working wavelength, measurement accuracy, window, display and output, response time, protective accessories, etc;
(2) In terms of environment and working conditions, such as environmental temperature, windows, display and output, and protective accessories;
(3) Other options, such as ease of use, maintenance and calibration performance, and price, also have a certain impact on the selection of thermometers.
Industrial application of infrared thermometer
Electricity: temperature protection and signal transmission for coal-fired power plants, gas heating power plants, hydropower stations, nuclear power plants, regional heating pipelines, and large power transformers.
Metallurgy: aluminum plants, copper plants, steel plants, etc.
Petrochemical: oil extraction, oil pipelines, petrochemical plants, refineries.
General industries: chiller factories, air conditioning factories, refrigerator factories, beer factories, pharmaceutical factories, automobile factories.
Temperature component manufacturing factory: Platinum resistance, thermocouple and compensation wire and cable, temperature switch, temperature sensor manufacturing factory.
Transportation: Aircraft maintenance at airports, maintenance of large transportation power systems, and ocean shipping are used as in-service maintenance measurement methods.
