A detachable gas analyzing apparatus has a plurality of gas analyzer units insertable into and removable from a the front side of a container case. Complementary electrical and gas connectors are disposed on the rear side of the gas analyzer units and the container case. Guides and engaging rails...http://www.google.ca/patents/US5746976?utm_source=gb-gplus-sharePatent US5746976 - Detachable gas analyzing apparatus
