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The subcommittee is responsible for standards relating to radiation or infrared (IR) temperature measurement. E20.02's standards are published along with the rest of the E20's standards in the Annual Book of ASTM Standards , Volume 14.03.
In 2020 when COVID-19 pandemic hit the world, infrared thermometers were used to measure people's temperature and deny them entry to potential transmission sites if they showed signs of fever. Public health authorities such as the FDA in United States published rules to assure accuracy and consistency among the infrared thermometers. [3]
A medical thermometer or clinical thermometer is a device used for measuring the body temperature of a human or other animal. The tip of the thermometer is inserted into the mouth under the tongue (oral or sub-lingual temperature), under the armpit (axillary temperature), into the rectum via the anus (rectal temperature), into the ear (tympanic temperature), or on the forehead (temporal ...
Cheap small consumer non-contact thermometers are sold for less that $50 (Cen-Tech, Harbor Freight) with spot sizes from 12:1 to 6:1, that measure with a resolution of .1 degree over a wide range, with a claimed accuracy of about 2 degrees. Smaller pocket versions with spots sizes of 1:1 are available for under $20. What sensors do these use?
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Such thermometers are usually calibrated so that one can read the temperature simply by observing the level of the fluid in the thermometer. Another type of thermometer that is not really used much in practice, but is important from a theoretical standpoint, is the gas thermometer. Other important devices for measuring temperature include:
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