Simpler instruments may have a measurement error of about ±2 °C or ±4 °F. A few examples provided include detecting clouds for remote telescope operation, checking mechanical or electrical equipment for temperature and hot spots, measuring the temperature of patients in a hospital without touching them, checking heater or oven temperature, for calibration and control, checking for hot spots in fire-fighting, monitoring materials in processes involving heating or cooling, and measuring the temperature of volcanoes. The most common infrared thermometer is the spot infrared pyrometer or infrared Related equipment, although not strictly thermometers, include infrared scanning systems and infrared thermal imaging cameras. They are sometimes called laser thermometers as a laser is used to help aim the thermometer, or non-contact thermometers or temperature guns, to describe the device's ability to measure temperature from a distance. The ideal target area should be at least twice the size of the spot at that distance,Most surfaces have high emissivity (over 0.9 for most biological surfaces)A sensor with an adjustable emissivity setting can also be used to calibrate the sensor for a given surface or to measure the emissivity of a surface. Sometimes, especially near ambient temperatures, readings may be subject to error due to the reflection of radiation from a hotter body—even the person holding the instrumentThe design essentially consists of a lens to focus the infrared Some typical circumstances are where the object to be measured is moving; where the object is surrounded by an Infrared thermometers can be used to serve a wide variety of temperature monitoring functions. Infrared thermometers are characterized by specifications including accuracy and angular coverage. When the temperature of a surface is accurately known (e.g. These devices are widely used in manufacturing involving conveyors or "web" processes, such as large sheets of glass or metal exiting an oven, fabric, and paper, or continuous piles of material along a conveyor belt. Infrared thermal imaging cameras or A medical IR thermometer in use, with the light indicating the measured area. By knowing the amount of infrared energy emitted by the object and its emissivity, the object's temperature can often … by measuring with a contact thermometer), then the sensor's emissivity setting can be adjusted until the temperature measurement by the IR method matches the measured temperature by the contact method; the emissivity setting will indicate the emissivity of the surface, which can be taken into account for later measurements of similar surfaces (only). At times of epidemics of diseases causing fever, such as There are many varieties of infrared temperature-sensing devices, both for portable and handheld use and as fixed installations. An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black-body radiation emitted by the object being measured.
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non contact infrared thermometer