Aerosol concentration sensor calibration device
AssigneeKidde Technologies, Inc.
InventorsEli Baldwin, James Varnell, Saul Salas
Life of this patent
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Abstract
According to an aspect of the present disclosure, an aerosol concentration sensor calibration device includes a mixing column, a sensor, and a collection vessel. The mixing column extends in a vertical orientation between an inlet at a bottom of the mixing column and an outlet at a top of the mixing column, the mixing column configured to receive a mixture of a powder and a compressed gas at the inlet. The sensor is disposed in the mixing column and configured to measure the concentration of the powder in the mixing column. The collection vessel has an inlet fluidly coupled to the outlet of the mixing column. The collection vessel is configured to collect the powder received from the mixing column.
Claims20
An aerosol concentration sensor calibration device comprising:
- a mixing column extending in a vertical orientation with respect to gravity from an inlet at a bottom of the mixing column and an outlet at a top of the mixing column, the mixing column configured to receive a mixture of a powder and a compressed gas at the inlet;
- a sensor disposed in the mixing column and configured to measure a concentration of the powder within flow of the compressed gas, in the mixing column;
- and
- a collection vessel having an inlet fluidly coupled to the outlet of the mixing column, the collection vessel configured to collect the powder exiting the mixing column at the outlet.
A method of calibrating an aerosol concentration sensor device, the method comprising:
- delivering a mixture of a powder and a compressed gas to a mixing column, the mixing column extending in a vertical orientation with respect to gravity between an inlet at a bottom of the mixing column and an outlet at a top of the mixing column, such that the powder and the compressed gas flow upward through the mixing column;
- aerosolizing the powder within the compressed gas flow in the mixing column;
- measuring, via a sensor disposed proximate an outlet of the mixing column, an aerosolized concentration of the powder in the mixing column;
- collecting the powder in a collection vessel fluidly coupled to the outlet of the mixing column;
- terminating delivery of the mixture of the powder and the compressed gas to the mixing column;
- and
- calculating an aerosolized concentration of the powder in the mixing column based on a measured weight of the collected powder.
Dependencies are inferred from the claim text.