Abstract: A clinical infrared thermometer is disclosed for use in measuring the internal temperature of living subjects. The system operates by the combination of a radiation sensor that is held in isothermic condition with wave guide at ambient temperature. A thermistor, or other temperature sensor, is thermally coupled thereto and compensates for changes in ambient conditions.
Abstract: A clinical thermometer device includes a body with means for reading out temperature electrically or electronically and a probe body supporting a pair of thermo-couple wires which are thin and of themselves not self-supporting, with the thermo-couple junction exposed at an end of the probe body. The probe is oriented with respect to a plug receptacle to establish correct polarity, or wires on the probe and contacts in the plug establish correct polarity regardless of orientation.