Measuring device for measuring parameters in an air stream to be

Details Measuring device for measuring parameters in an air stream to be Measuring device for measuring parameters in an air stream to be

1993-07-29

1995-01-03

Williams, Hezron E.

Measuring and testing

Gas analysis

Ambient air

73 232, 454 75, 454139, 454256, 165 41, 165 111, B60H 132, F25B 4900

Patent

active

053775287

ABSTRACT:
Air to be introduced into the cabin of a motor vehicle passes over a measuring device, in which parameters such as temperature, humidity and pollution are measured. The measuring device comprises a housing having an air inlet, which is supplied with a fraction of the air stream, and an air outlet for evacuating this fraction. The housing has an internal chamber which communicates with both the air inlet and the air outlet, and air circulating means such as a pump are provided for setting up a differential pressure between the inlet and outlet so that the fraction of the air stream to be measured flows through the chamber in the housing. The sensor or sensors are arranged in this chamber, so that they are always ventilated by the air passing through the latter.

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French Search Report [2 pages].

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