Archibald Pamela Tewarson

US Patent:

20100206043, Aug 19, 2010

Filed:

Feb 18, 2009

Appl. No.:

12/372912

Inventors:

Archibald Tewarson - Newton Center MA, US

Assignee:

FACTORY MUTUAL INSURANCE COMPANY - Johnston RI

International Classification:

G01N 30/02
G01N 1/22
G01F 1/56
B01D 59/44

US Classification:

73 2341, 7386323, 7386108, 250282

Abstract:

A smoke evaluation device includes a manifold in fluid communication with a source of smoke, and a first sampling line and a second sampling line in fluid communication with the manifold. The first sampling line and the second sampling line are arranged to convey parallel smoke flows. A first filter station is located in the first sampling line, and is adapted to support a filter paper in fluid communication with the smoke. A first circuit board station is located in the second sampling line, and is adapted to support a circuit board in fluid communication with the smoke.