The three major classifications of medical infrared thermometers are based on their main purpose and precision. Infrared thermometers can be roughly divided into medical equipment grade infrared thermometers, consumer grade infrared thermometers and industrial production grade infrared thermometers.
Strictly up the distinction, medical equipment-grade infrared thermometers have the highest precision requirements, and the precision must be between 0.1 and 0.2 degrees. High-precision infrared ear thermometers can meet the specifications of medical equipment-level temperature measurement. In order to prevent infection, A disposable sheath must be provided when the ear thermometer is used in the outpatient department of the hospital; secondly, the precision of 0.5 can meet everyone's usual temperature measurement requirements, such as the temperature measurement of the bath water by the mother.
At this stage, most portable infrared forehead thermometers from medical thermometer manufacturers are currently on the market. The price is between US$15 and US$150 and the precision is around 0.3 degrees. They belong to consumer-grade infrared thermometers. The industrial production grade is the least, generally the larger allowable deviation is above ±1℃, and the laser distance measurement is far away.
The difference between various popular medical infrared thermometers. In fact, whether it is medical equipment or industrial infrared thermometers, the basic principle of their application is to accept infrared waves from the body, only the object distance is adjusted differently, and all that is accurately measured is the ambient temperature.
All normal body forehead temperature is 2-3℃ lower than the armpit temperature, and the forehead temperature is greatly affected by the environment. It is only used as a reference for basic examinations and cannot be used as a basis for medical diagnosis. Therefore, medical and clinical medicine refer to the armpit temperature as Medical temperature measurement.
In addition, the temperature of the ears, head and neck will be more stable than the temperature of the forehead, and will be less affected by the natural environment.
The long-wave infrared emissivity of body skin is 0.98 (default setting of infrared thermometer is 0.95), so the accurate measurement result is around 34-35℃. All infrared products including (infrared thermal imaging camera) can be adjusted according to the change emissivity of 0.8 Errors to prevent abnormal body temperature caused by laymen's application. The industrial production-grade infrared thermometer provides more true feedback of the temperature measurement status, and the information displayed is the temperature that is specifically tested.
In the past, a large number of infrared thermometers were used for temperature measurement in industrial production. Later, due to market demand, the basic development trend of industrial production-grade infrared thermometers showed that the detection range was smaller, the precision was higher, and the temperature was more suitable. A medical infrared thermometer for measuring the temperature of the human body. During the 2003 "Fight against SARS" period, most of the applications used were industrial production-grade infrared thermometers.
Since the price of an industrial-grade portable infrared thermometer at that time was generally around US$150, you could buy it for as little as US$90. The medical thermometers available on the sales market not only have a smaller supply of goods, but also have a much higher price.
In recent years, with the development of technology, infrared thermometers have made great achievements in precision, volume and cost reduction. Only portable medical infrared thermometers and consumer-grade infrared thermometers are enough to get rid of the sales market dominance of industrial production-grade infrared thermometers.
In the epidemic, medical infrared thermometers and consumer-grade infrared thermometers are widely used in public places such as hospital outpatient clinics, airports and subway stations, farmer's markets, supermarkets, and residential communities. Industrial production-grade infrared thermometers with relatively low precision are also withdrawn from the stage of epidemic prevention and control.