Applications of Remote Infrared Temperature Measurements tor Environmental Control Systems
Bailey W. Mitchell · Transactions of the ASAE · 1988
ABSTRACT A remote infrared, non-contact thermometer was used to measure surface temperatures on three different types of environmental control systems. Comparisons of these measurements to thermocouple and air or liquid temperatures made with electronic or liquid-filled thermometers indicated that the infrared measurements were well within the rated uncertainty of 3.3°C. Mean differences between infrared temperatures and those measured with a contact surface temperature transducer ranged from 0.08°C for measurements near ambient temperature (21.4°C) to 21.8°C for a hot water line which was approximately 61 °C warmer than ambient. Most of this difference was attributed to measurement error of the contact probe. The accuracy, speed and convenience with which measurements can be made with the infrared thermometer make it extremely useful for temperature measurements on environmental control systems