Measuring and testing – Gas analysis – With compensation detail
Patent
1996-02-23
1997-05-06
Williams, Hezron E.
Measuring and testing
Gas analysis
With compensation detail
73 2332, 73 3101, 73 2404, 204424, 204426, H01C 0700, G01N 3112, G01N 2726
Patent
active
056273061
ABSTRACT:
In an oxygen gas sensor having a variable electrical characteristic dependent upon ambient oxygen concentration, a ceramic holding member having a hole for holding a plate sensor sensor element is disposed in a housing with the element inserted into the housing. During sensor assembly, powder is filled under pressure in the housing between a pressurized member and the ceramic holding member. The ceramic holding member has an inclined surface descending directly from an upper opening end of the holding hole to form an obtuse angle between the sensor element and the inclined surface, so that the powder can flow on the inclined surface smoothly during the powder filling and powder compressing operations. By taking this construction it is possible to provide an oxygen concentration sensor with no cracking of the element and easy mounting of the sensor element to the housing.
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Watanabe Isao
Yamauchi Masanobu
Nippondenso Co. Ltd.
Wiggins J. David
Williams Hezron E.
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