Improved aerosol sensor testing

An aerosol detector test system (Fig. 2) comprises a vibrating mesh nebuliser 1 to generate an aerosol. The nebuliser may introduce aerosol into an aerosol line (7, Fig. 2) to which an aerosol sensor instrument may be connected. The nebuliser is used in testing and calibrating aerosol sensors/detect...

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Bibliographic Details
Main Authors Sarah Marchant, Maurice Daverell Walker, Peter Brian Jones, Andrew Thomas Martin
Format Patent
LanguageEnglish
Published 20.05.2020
Subjects
APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
ATOMISING APPARATUS
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
NOZZLES
PERFORMING OPERATIONS
PHYSICS
SPRAYING APPARATUS
SPRAYING OR ATOMISING IN GENERAL
TESTING
TRANSPORTING
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Summary:An aerosol detector test system (Fig. 2) comprises a vibrating mesh nebuliser 1 to generate an aerosol. The nebuliser may introduce aerosol into an aerosol line (7, Fig. 2) to which an aerosol sensor instrument may be connected. The nebuliser is used in testing and calibrating aerosol sensors/detectors; the sensors/detectors may be for detecting hazardous chemical aerosols, e.g. chemical warfare agents. The nebuliser comprises a reservoir for liquid, a mesh/plate 2 comprising multiple perforations, and a driver 4 for vibrating the mesh/plate. The driver can provide a variable drive frequency, perhaps between 1 Hz and 100 kHz, to enable the mesh/plate to be vibrated at variable duty cycles, so that the nebuliser can deliver variable concentrations of aerosol.
Bibliography:Application Number: GB20180017725