GALVANIC CURRENT PROTECTION FOR PHOTOIONIZATION DETECTOR

GALVANIC CURRENT PROTECTION FOR PHOTOIONIZATION DETECTOR

A photoionization detector comprised of a sensor having at least a collector electrode (304) and a grounding electrode (306), a gas discharge lamp that ionizes molecules of interest to create ionized molecules and electrons, and an amplifier connected to the collector electrode. Each of the collecto...

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Hauptverfasser: WILLCOX, Charles, FIELDS, Christopher, JENNINGS, David
Format: Patent
Sprache:eng ; fre ; ger
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator WILLCOX, Charles
FIELDS, Christopher
JENNINGS, David
description A photoionization detector comprised of a sensor having at least a collector electrode (304) and a grounding electrode (306), a gas discharge lamp that ionizes molecules of interest to create ionized molecules and electrons, and an amplifier connected to the collector electrode. Each of the collector electrode and the grounding electrode include a feed-thru pin (308, 310), an inner trace surrounding the feed-thru pin (312, 314), an outer trace surrounding the inner trace (320, 322), wherein the outer trace on each electrode is comprised of the same material, a channel between the inner trace and the outer trace (316, 318), wherein the channel is comprised of a different material than the outer trace and the inner trace, and a bridge connecting the outer trace with the inner trace (324, 326). The ionized molecules are collectable by a bias electrode (302) and electrons are collectable by the collector electrode.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title GALVANIC CURRENT PROTECTION FOR PHOTOIONIZATION DETECTOR
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