The distinction between medical and industrial thermometers
The principle of the thermometer
Thermometer is a kind of thermometer. It uses the principle of infrared transmission of numbers to sense the surface temperature of objects. It is more convenient to operate, especially for the measurement of high-temperature objects. It is widely used, such as measuring the surface temperature of steel casting, furnace temperature, machine parts, glass, room temperature, body temperature and other objects. The most commonly used is the infrared thermometer.
The infrared thermometer is composed of optical system, photoelectric detector, signal amplifier, signal processing, display output and other parts. The optical system gathers 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 its position. Infrared energy is focused on a photodetector and converted into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is converted into the temperature value of the measured target after being corrected according to the algorithm inside the instrument and the target emissivity.
The difference between industrial thermometers and medical thermometers
Whether it is medical or industrial infrared thermometer, its principle is to receive infrared waves emitted by the human body. Industrial infrared thermometers measure the surface temperature of the human body. The temperature of the forehead of a normal human body is about 1-2°C lower than that of the armpit, and the forehead is greatly affected by the environment. Therefore, clinical medicine refers to the temperature of the armpit as medical temperature measurement. The medical thermometer has revised the difference or limited the relevant range through the software before leaving the factory. Industrial products provide more real feedback on temperature measurement. The emissivity of a normal human body is 0.98 (the thermometer defaults to 0.95), so the measured result is around 34-35°C. BG45R products can correct the difference by modifying the emissivity to 0.98 to avoid inaccurate body temperature brought by non-professionals.
