Types of infrared temperature measurement instruments
Infrared temperature measurement instruments are mainly three types: infrared thermal imaging camera, infrared thermal television, infrared thermometer (point temperature instrument). 60 years China successfully developed the first infrared thermometer, after 1990 and the successive production of small target, long-distance, suitable for the characteristics of the electric production of temperature measurement instruments, such as Xikuang IRT-1200D, HCW-III, HCW-V; YHCW-9400; WHD4015 (dual target, target D 40mm, up to 15 m), WFHX330 (optical) -III type, HCW-V type; YHCW-9400 type; WHD4015 type (double aiming, target D 40 mm, up to 15 m), WFHX330 type (optical aiming, target D 50 mm, up to 30 m). PM-20, 30, 40, 50, HAS-201 pyrometer produced in the United States; Sweden AGA TPT20, 30, 40, 50, etc. also have a wider application.DL-500 E can be applied to 110 ~ 500 kV substation equipment, the image is clear, the temperature accuracy. Infrared camera, mainly Japan TVS-2000, TVS-100, the United States PM-250, Sweden AGA- THV510, 550, 570. recently, the domestic infrared thermal imaging camera in Kunming successfully developed, to achieve localisation. .
Infrared thermometer working principle
Understand the working principle of infrared thermometer, technical indicators, environmental conditions and operation and maintenance is the user to correctly select and use the basis of infrared thermometer. Infrared thermometer by the optical system, photoelectric detector, signal amplifier and signal processing, display output and other components. Optical system convergence of its field of view of the target infrared radiation energy, the size of the field of view by the thermometer's optical parts and location decision. The infrared energy is focused on the photoelectric detector and transformed into a corresponding electrical signal. This signal is converted into a temperature value for the target by an amplifier and signal processing circuitry, corrected for the target emissivity according to the instrument's internal algorithm. In addition to this, the environmental conditions in which the target and the pyrometer are located, such as temperature, atmosphere, pollution and interference, should be taken into account with regard to the impact on the performance indicators and the method of correction.
