Infrared thermometer consists of optical system, photodetector, signal amplifier, signal processing, display output and other parts. The optical system converges the target infrared radiation energy in its field of view, and the size of the field of view is determined by the optical parts of the thermometer and their positions. The infrared thermometer energy is focused on the photodetector and converted into a corresponding electrical signal. The infrared thermometer signal passes through the amplifier and the signal processing circuit, and is converted into the temperature value of the measured target after being corrected according to the algorithm and target emissivity of the instrument.
Read MoreSend InquiryCotton gauze mask: It can prevent part of the virus from invading, but it has poor adhesion to the human face and low anti-virus efficiency. Common cotton yarn masks are fiber masks. The principle of blocking the cotton yarn mask is a mechanical barrier. Through this layer of mechanical blocking, the cotton yarn mask can block large particles, but cannot block particles smaller than 5 microns in diameter.
Read MoreSend InquiryProtective masks are divided into air-supply protective masks and filter-type protective masks. Air filter masks can filter particles in the air, and block droplets, blood, body fluids, toxic gases, and secretions. Air-supply protective masks refer to air-supply protective masks in chemical factories, fire sites, or military chemical hazards, which are ordinary individual soldier protective masks.
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