Industrial applications and use notes for infrared thermometers
Infrared temperature measurement technology is used in the production process, in terms of product quality control and monitoring, equipment online fault diagnosis and safety protection, and energy saving.
played an important role. In the past 20 years, the non-contact infrared human body thermometer has developed rapidly in technology, its performance has been continuously improved, its functions have been continuously enhanced, its varieties have continued to increase, and its scope of application has also continued to expand. Compared with contact temperature measurement methods, infrared temperature measurement has the advantages of fast response time, non-contact, safe use and long service life. Non-contact infrared thermometers include three series of portable, on-line and scanning, and are equipped with various options and computer software, and each series has various models and specifications. Among the various models of thermometers with different specifications, it is very important for users to choose the correct model of infrared thermometer. What problems should be paid attention to when using infrared thermometer? In order to measure temperature, aim the instrument at the object to be measured , press the trigger to read the temperature data on the LCD of the instrument, and ensure that the ratio of the distance to the spot size and the field of view are arranged.
Problems that should be paid attention to when using infrared thermometers:
1. Only the surface temperature is measured, and the infrared thermometer cannot measure the internal temperature.
2. The wavelength above 5um cannot be used for temperature measurement through quartz glass. Glass has very special reflection and transmission characteristics, which does not allow accurate infrared temperature readings. But the temperature can be measured through the infrared window. Infrared thermometers are best not used for temperature measurement on bright or polished metal surfaces (stainless steel, aluminum, etc.).
3. Locate the hot spot. To find the hot spot, the instrument aims at the target, and then scans up and down on the target until the hot spot is determined.
4. Pay attention to environmental conditions: steam, dust, smoke, etc. It blocks the optical system of the instrument and affects accurate temperature measurement.
5. Ambient temperature. If the thermometer is suddenly exposed to an ambient temperature difference of 20°C or higher, allow the instrument to adjust to the new ambient temperature within 20 minutes.
The correct choice of infrared thermometer The selection of infrared thermometer can be divided into three aspects:
(1) Performance indicators, such as temperature range, spot size, working wavelength, measurement accuracy, window, display and output, response time, protection accessories, etc.;
(2) Environmental and working conditions, such as ambient temperature, windows, display and output, protective accessories, etc.;
(3) Other selection aspects, such as ease of use, maintenance and calibration performance, and price, also have a certain impact on the choice of thermometers.
Industrial Application of Infrared Thermometer
Electric power: temperature protection and signal transmission of coal-fired power plants, gas heating power plants, hydropower plants, nuclear power plants, district heating pipe networks, large power transformers, etc.
Metallurgy: aluminum plants, copper plants, steel plants, etc.
Petrochemical: oil extraction, oil pipelines, petrochemical plants, refineries.
General industry: Refrigerator factory, air conditioner factory, refrigerator factory, brewery, pharmaceutical factory, automobile factory.
Temperature element manufacturers: Platinum resistors, thermocouples and compensation wires and cables, temperature switches, and temperature sensor manufacturers.
Transportation: Aircraft maintenance at airports, large-scale transportation power system maintenance, ocean shipping as in-service maintenance measurement means.
