The COMBIMASS® GA-s hybrid eco is a stationary analyser without a graphic display. In the basic version it has a H2S gas module of the hybrid series with the possibility of measuring one gas stream. By means of an upgrade option, we are able to increase the measuring range to two streams for gases such as hydrogen sulphide, methane and oxygen. It is mainly used for monitoring the biogas filter upstream of the CHP engine. Choice of plastic housing or, in a more expensive version, stainless steel.