Patent ID: 7954993

Claim:
A measuring apparatus comprising a detector device for detecting a variable to be measured, and a controller operative to control the detector device and generate an output signal indicative of the magnitude of the variable being measured, the detector device comprising a housing on which are mounted two Peltier-Seebeck detectors, the detectors being arranged on the housing such that only the first Peltier-Seebeck detector is exposed, in use, to the variable to be measured, the controller being operative to generate the output signal based on the output of the first Peltier-Seebeck detector and the output of the second Peltier-Seebeck detector; wherein the two Peltier-Seebeck detectors are thermally connected to a common thermally conductive body and wherein the thermally conductive body is mounted on the detector housing by a thermally insulating mount which resists, in use, thermal conduction between the thermally conductive body and the detector housing.