Gas sensor
First Claim
Patent Images
1. 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.
2 Assignments
0 Petitions
Accused Products
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.
15 Citations
23 Claims
-
1. 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
- 13. 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.
Specification