Sinter-bonded metal flow restrictor for regulating volumetric gas flow through an aerosol sampler inlet
First Claim
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1. A pollution sampling device, comprisingan inertial impactor;
- a sinter-bonded metal flow restrictor;
a vacuum pump; and
a power supply;
wherein the inertial impactor, the sinter-bonded metal flow restrictor and the vacuum pump are connected in respective order to establish a channel of fluid communication there-through; and
wherein the power source energies the vacuum pump to generate a negative pressure in the channel of fluid communication.
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Abstract
The present invention allows for increased volumetric flow rates relative to current commercially available technology in battery-powered PM sampling devices while vastly simplifying the operation of that device. This will allow for the capture of more PM in a shorter amount of time by allowing a shorter sampling duration and finer scale sampling or the collection of meaningful levels of PM in areas with unusually low concentrations of pollution. Further, the invention can be applied to any aerosol sampling device which requires a fixed rate of volumetric gas flow drawn through an aerosol sampling inlet.
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20 Claims
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1. A pollution sampling device, comprising
an inertial impactor; -
a sinter-bonded metal flow restrictor; a vacuum pump; and a power supply; wherein the inertial impactor, the sinter-bonded metal flow restrictor and the vacuum pump are connected in respective order to establish a channel of fluid communication there-through; and wherein the power source energies the vacuum pump to generate a negative pressure in the channel of fluid communication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification