Aspirated detector

Details Aspirated detector Aspirated detector

1996-10-24

1999-07-20

Wu, Daniel J.

Communications: electrical

Condition responsive indicating system

Specific condition

340578, 340584, 340628, 3406911, 3406936, 250573, 356438, G08B 1710

Patent

active

059260980

ABSTRACT:
An aspirated-type detector includes a housing with an internal ambient condition sensing region and a sensor carried therein. The housing is perforated with ambient atmosphere inflow ports. A fan or similar device lowers the pressure in the internal region thereby producing a positive inflow of adjacent, external ambient atmosphere into the sensing region. Alternatively, the fan can be operated to inject exterior ambient atmosphere into the sensing chamber under positive pressure. The fan can also be modularized. The detector can incorporate control circuitry for supervisory or signal processing purposes.

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