Patent ID: 8257655

Claim:
A gas detecting arrangement that comprises a gas cell, which includes a cavity formed in a circuit board with a gas inlet and a gas outlet, a gas-cell related light source disposed in the circuit board at a first end of the cavity, a gas-cell related light detector disposed in the circuit board at a second end of the cavity, and a controlling and computing unit disposed adjacent the cavity on a surface of the circuit board, the controlling and computing unit being adapted for initiating activation of said light source and also adapted to evaluate the presence of and/or the concentration of a gas and/or a gas mixture enclosed in the cell cavity in response to receiving light-detector-signals from the light detector, wherein said cavity is structured as at least one of a small aperture, a small slot, or a small channel with a dimension generally corresponding to a dimension of the light source; and wherein an opening provided in said board and related to the aperture slot, or channel, is covered with a lid functioning element.