Gas sensor
AssigneeCorentium AS
InventorsBjorn Magne Sundal, Erlend Bolle, Koki Yoshioka
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Abstract
A gas sensor instrument comprises a housing formed of two parts (102, 10) and a diffusion chamber inside the housing. The diffusion chamber is formed from two parts (106, 108) and at least one of the diffusion chamber parts is formed integrally with one of the housing parts. This allows a reduction in size of the instrument without compromising the size of the diffusion chamber. Additionally, a tubular projection is formed integrally with one of the housing parts to form part of a Faraday cage for shielding an amplifier circuit of the instrument.
Claims23
A gas sensor instrument, comprising:
- first and second housing parts which mate together to form an instrument housing;
- and
- first and second diffusion chamber parts which mate together to form a diffusion chamber;
- a detector located within the diffusion chamber;
- and
- a first printed circuit board housed within the instrument housing;
- where the printed circuit board is arranged to process a signal from said detector;
- wherein at least one of the first and second diffusion chamber parts is integrally formed with at least one of the first and second housing parts.
A method of making a gas sensor instrument comprising first and second housing parts first and second diffusion chamber parts, a detector and a first printed circuit board for processing a signal from said detector, wherein the first diffusion chamber part is integrally formed with the first housing part and the second diffusion chamber part is integrally formed with the second housing part and wherein the method comprises simultaneously mating the first housing part with the second housing part and the first diffusion chamber part with the second diffusion chamber part such that the detector is located between the first and second diffusion chamber parts and the first printed circuit board is housed between the first and second housing parts.
Dependencies are inferred from the claim text.