Gas sampling device with improved mixed flow fan
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United States of America Patent
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-
May 28, 1991
Grant Date -
N/A
app pub date -
Feb 8, 1990
filing date -
Feb 8, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas sampling device including a chamber assembly formed of a chamber base having a chamber top mounted thereto is disclosed. A gas sensor is mounted to the chamber base in fluid communication with a gas flow passage therethrough. A motor is mounted to the lower surface of the chamber base and has a shaft extending through the chamber base. A fan is mounted onto the motor shaft within the chamber housing. An inlet flow passage extends through the chamber top above the center of the fan and an outlet flow passage extends through the chamber top above the gas flow passage. The fan and the chamber top are provided with a particular configuration to provide for efficient and smooth flows of gas through the housing and to the sensor. 5
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