Thermometry Infrared

Infrared thermometry is one of the methods for measuring human body temperature. It is based on recording the intensity of infrared radiation that is emitted by the surface of human skin. This radiation is called thermal radiation and it arises as a result of metabolic processes in the body.

To carry out infrared thermometry, special infrared thermometers are used that measure the temperature of the skin surface in real time. Thermometers can be contact or non-contact. A contact thermometer must be applied to the skin, and a non-contact thermometer must be aimed at the surface of the skin.

Infrared thermometry is widely used in medicine to diagnose various diseases such as colds, flu, pneumonia and others. It can also be used to monitor the health of people working in hazardous industries or in conditions of high humidity.

In addition, infrared thermometry is used in industry to control the quality of products and technological processes. For example, it can be used in food production to determine its temperature and degree of doneness.

In general, infrared thermometry is of great importance for medicine, industry and other areas where it is necessary to monitor the temperature of the body or the surface of objects. This measurement method is accurate, fast and easy to use, making it an indispensable tool in various fields of activity.

Infrared thermometry - T.I. (thermal imaging thermometry, thermovision) - a method of measuring the temperature of various objects using infrared thermal imagers, intended for use in medical diagnostics and scientific research, as well as in a number of industrial and domestic areas where fast and accurate temperature measurement is necessary object. Infrared thermal imagers are also used for non-destructive testing and in forensic science, as thermal imagers. It is used as a type of pyrometry, but on a completely different measurement principle, based on measuring the flow of heat energy.

The principle of operation is based on the fact that any change in the temperature of an object causes a change in the density of the heat flux reflected or emitted by this object. In this case, a flux of the invisible infrared range is measured, however, ordinary reflectors (for example, glasses, sunglasses, dark surfaces with black areas) sharply worsen the accuracy, since due to back reflection they heat up the observed object. The flow of measured heat falls on the window of the thermal imager, and an image is formed, which is converted into the equivalent of infrared temperatures.

The speed at which infrared cameras detect elevated temperatures depends on the temperature of the person’s body in the background vegetation of clothing located in the observation area, and the presence of metal fittings (zippers, buttons) under clothing. It is best to observe colorless bodies without a pronounced vascular network (skin with its capillaries), without tubercles and depressions on the surface, and also without cataract bodies, with a light brown color of the skin. Areas of red color are poorly detected (by thermal cameras), even with a rich vascular network, which makes it difficult to detect heat sources against a red background.