SAMPLING PUMPS AND CLOSED LOOP CONTROL OF SAMPLING PUMPS TO LOAD TRAPS

SAMPLING PUMPS AND CLOSED LOOP CONTROL OF SAMPLING PUMPS TO LOAD TRAPS

Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable res...

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Bibliographische Detailangaben
Hauptverfasser: RANDS, Anthony, D, PORTER, Nathan, L, WAITE, Randal, W, GRANT, Chad, A, NEMELKA, Kenneth, D
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:Certain configurations of devices and systems which are configured to draw a selected volume of an air sample into a trap are described. In some examples, the devices and systems comprise a pump and a mass flow sensor to draw a selected volume of the air sample through a trap even where variable restriction occurs.