Waterproof device of atmospheric pressure measuring chip

The utility model relates to a waterproof device of an atmospheric pressure measuring chip. The waterproof device comprises a housing and a narrow and long channel. Operating space for accommodating the atmospheric pressure measuring chip is formed in the housing. The housing and a circuit board are...

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Bibliographic Details
Main Authors LIU LIANGGANG, HAN JIANJUN
Format Patent
LanguageEnglish
Published 08.10.2014
Subjects
MEASURING
MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER,MECHANICAL EFFICIENCY, OR FLUID PRESSURE
PHYSICS
TESTING
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Summary:The utility model relates to a waterproof device of an atmospheric pressure measuring chip. The waterproof device comprises a housing and a narrow and long channel. Operating space for accommodating the atmospheric pressure measuring chip is formed in the housing. The housing and a circuit board are sealed by a sealing ring. The operating space has first volume V1. The narrow and long channel is communicated with the operating space and has second volume V2. The specific value of the sum of the first volume and the second volume to the first volume is more than (1+ the underwater depth h (in meters) of the atmospheric pressure measuring chip)/10. In other words, (V1+V2)/V1 is more than (1+h (in meters)/10). The waterproof device may satisfy a requirement of IP67 waterproof grade.
Bibliography:Application Number: CN20142219430U