Zellweger Analytics Limited

Russell Christopher Foot

Ian Francis Tindall

Martin Charles Legg

A housing for flammable gas detector comprises a housing body and a flame arrestor element ( and ). The housing body has an aperture ( ) in which the flame arrestor element is located through which the interior of the housing body communicates with the outside. The housing body surrounding the aperture is molded from plastic material. The portions of the housing body that form the aperture ( ) are molded around the flame arrestor element with the flame arrestor element in situ. A flammable gas detector of the type which employs a heated sensing element to oxidize any flammable gas present may be located in the housing body. Any flame front present in the housing body due to oxidation of any flammable gas is prevented from progressing to the surrounding environment by the flame arrestor element.

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Poole, United Kingdom

Russell Christopher Foot