thermopile sensor and strahlungsthermometer with a thermopile sensor

摘要

The sensor (1) has a housing enclosing a thermopile with hot and cold points (11,12) and a holder for each point. The thermal capacity of the cold points and their associated holders, CK, divided by the thermal capacity of the hot points and their associated holders, CW, is approximately equal to the heat conductivity near the cold points, ~lK, divided by the heat conductivity near the hot points, ~lW. The cold and hot points have approximately the same thermal insulation relative to the housing, and preferably ~lK = ~lW and CK = CW. Each holder may have a membrane (3) with a low heat capacitance and heat conductance.