Aspirated detector with flow sensor

Details Aspirated detector with flow sensor Aspirated detector with flow sensor

G - Physics

08

B

G08B 29/00 (2006.01) G08B 17/10 (2006.01)

Patent

CA 2291203

A detector includes a smoke sensor and an aspiration unit. The aspiration unit causes ambient air from a region directly adjacent to the detector to flow into a sensing region of the sensor. A flow monitoring sensor provides feedback to a control circuit to vary pulse modulated drive signals coupled to the aspiration unit. A plurality of variable resistance temperature sensors can be used for flow monitoring. Communication with the detector can be carried out via interface circuits.

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