Quad Thermopile

Four individual thermopiles with different infrared bandpass
filters in TO 5 housing for NDIR gas sensing - up to 4 gases
possible

Thermistor temperature reference included
Internal aperture to avoid cross talk
Standard gas filter sets for reference, CO, hydrocarbon, CO2

.The quad thermopile sensor consists of four single thermopile chips mounted in a TO 5 housing with a thermistor as temperature reference. The window size is 1.5 x 1.5 mm2 each. Due to the overall small sensor size the construction of a very compact equipment becomes possible.

Applications in automotive exhaust gas control, multiple gas detection for the safety product market or air quality monitoring
For further information please refer to the TPS 4339 product note