heimann sensor’s thermopile modules consist of a thermopile sensor or thermopile array with an integrated asic for signal conditioning. the asic amplifies the small sensor’s voltage and provides either an analog or a digital output. in the case of an analog output, you receive the amplified sensor voltage value. in the case of a digital output, it is possible to select between voltage and temperature value.
all modules have an integrated linear temperature reference voltage. this voltage (in the analog case) or voltage value (in the digital case) can be obtained from a separate output channel.