Additional uses and infrared thermometer concepts
The infrared thermometer consists of an optical system, a photodetector, a signal amplifier, signal processing, display output, and other components. The optical system gathers the infrared radiation energy of the target within its field of view, and the size of the field of view is determined by the optical components and their positions of the thermometer. Infrared energy is focused on the photodetector and converted into corresponding electrical signals. The signal is converted into the temperature value of the tested target after being amplified and processed by the signal processing circuit, and corrected according to the algorithm of the instrument's internal treatment and the target emissivity.
Infrared diagnostic technology makes reliable predictions of early fault defects and insulation performance of electrical equipment, elevating the preventive testing and maintenance of traditional electrical equipment (preventive testing was introduced as a standard from the Soviet Union in the 1950s) to predictive maintenance, which is also the direction of modern power enterprise development. Especially with the development of large units and ultra-high voltage, the reliable operation of the power system is related to the stability of the power grid, and increasingly high requirements are put forward. With the continuous development and maturity of modern science and technology, the use of infrared state monitoring and diagnosis technology has the characteristics of long-distance, non-contact, non sampling, non disassembly, and accurate, fast, and intuitive. It can monitor and diagnose most faults of electrical equipment in real-time online (almost covering the detection of various faults of all electrical equipment).
It has been highly valued by the domestic and international power industry (an advanced condition based maintenance system widely used in the late 1970s abroad) and has developed rapidly. The application of infrared detection technology is of great significance in improving the reliability and effectiveness of electrical equipment, improving operational economic benefits, and reducing maintenance costs. It is currently a widely promoted good method in the field of predictive maintenance, and can also elevate the maintenance level and equipment health level to a higher level.
Infrared temperature measurement technology plays an important role in product quality control and monitoring, equipment online fault diagnosis and protection, and energy conservation during the production process. In the past 20 years, non-contact infrared thermometers have rapidly developed in technology, continuously improved in performance, enhanced in functionality, increased in variety, expanded in applicability, and increased in market share year by year. Compared to contact temperature measurement methods, infrared temperature measurement has advantages such as fast response time, non-contact, easy to use, and long service life. The non-contact infrared thermometer includes three major series: portable, online, and scanning, and is equipped with various options and computer software. Each series also has various models and specifications. It is very important for users to choose the correct infrared thermometer model among various models of temperature detectors with different specifications.
When measuring the temperature of a target using an infrared thermometer, the first step is to measure the infrared radiation of the target within its wavelength range, and then calculate the temperature of the measured target using the thermometer. The monochromatic thermometer is proportional to the radiation amount within the band; The dual color thermometer is proportional to the ratio of radiation in both bands.
