APPARATUS AND METHOD FOR MEASURING THE CONCENTRATION OF PARTICLES IN A GAS

APPARATUS AND METHOD FOR MEASURING THE CONCENTRATION OF PARTICLES IN A GAS of the Invention The invention provides an apparatus and method for measuring the concentration of particles in a gas using an electrode disposed within but electrically insulated from an electrically-conductive conduit membe...

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Bibliographische Detailangaben
Hauptverfasser:	REIF, ROBERT B, ALBRECHTSON, LOREN R
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
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Beschreibung
Zusammenfassung:	APPARATUS AND METHOD FOR MEASURING THE CONCENTRATION OF PARTICLES IN A GAS of the Invention The invention provides an apparatus and method for measuring the concentration of particles in a gas using an electrode disposed within but electrically insulated from an electrically-conductive conduit member, a current measuring device and means for maintaining the conduit member and the electrode at substantially the same potential. Flow of gas containing charged particles along the conduit induces a current passing from the electrode through the current measuring device. If the concentration of particles in the gas becomes excessive, the current measuring device activates a warning device or takes other action to prevent damage to any gas-consuming device attached to the apparatus. The apparatus might include an optional ionizer up-stream of the electrode to charge the particles in the gas.