The article deals with the methodology of verification of non-contact thermometers. A black body calibrator intended for infrared non-contact thermometers, which is considered an etalon gauge, is used to assess selected metrological properties. Also contact thermometer was used to check black body temperature. Industrial infrared thermometers, hand infrared thermometers and infrared thermal cameras were evaluated. Absolute measurement errors, standard deviations and measurement uncertainties of these devices were monitored.
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