"DEVICE FOR MEASURING A PARTICLE CONCENTRATION IN MOTOR VEHICLE EXHAUST GASES"

A device (1, 2, 3) for measuring a particle concentration in motor vehicle exhaust gases comprises a measurement chamber (26), which can be filled with a gas-particle mixture to be measured, at least one light source (4) and at least one light sensor (6a, 6b), wherein the light sensor (6a, 6b) is de...

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Bibliographische Detailangaben
Hauptverfasser:	STENGEL, KARL, HAAGA, GERHARD, SIEG, RAYMOND, NEUENDORF, MICHAEL
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING PHYSICS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A device (1, 2, 3) for measuring a particle concentration in motor vehicle exhaust gases comprises a measurement chamber (26), which can be filled with a gas-particle mixture to be measured, at least one light source (4) and at least one light sensor (6a, 6b), wherein the light sensor (6a, 6b) is designed to detect light which is scattered by particles present in the gas-particle mixture, an exhaust gas feeding unit(22) designed to feed exhaust gases to be measured to the measurement chamber (26), a zero gas source (12) to provide a low-particle zero gas, and a switching element (30), which is disposed between the exhaust gas feeding unit(22) and the measurement chamber (26) and is suited for selectively allowing or preventing the feeding of the exhaust gases into the measurement chamber (26).