IN SITU RESPIRATOR FIT TESTING

IN SITU RESPIRATOR FIT TESTING

A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differen...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Workman, David, Eiguren Fernandez, Arantzazu, Farmer, Kenneth, Lewis, Gregory Stephen, Spielman, Steven Russel, Bjorkquist, Daniel C, Grose, Melissa, Hering, Susanne Vera
Format: Patent
Sprache:eng
Schlagworte:
DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
FIRE-FIGHTING
HUMAN NECESSITIES
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LIFE-SAVING
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A system includes a first and second condensation particle counter, each counter having an inlet port, a growth column, and an optical element for counting particles detected at the respective inlet ports. The counters are configured to include a wick in which the wick is wetted by water. A differential pressure sensor is coupled to the first inlet port and coupled to the second inlet port. The sensor is configured to provide a pressure signal. A processor is coupled to memory and configured to receive the first signal, the second signal, and the pressure signal and generate an output corresponding to a ratio of the first signal and the second signal and correlate the ratio with the pressure signal. A housing is configured to receive the first counter, the second counter, the differential pressure sensor, the processor, and the memory.