APPARATUS AND METHOD FOR LEAK DETECTION USING HYDROGEN AS TRACER GAS

APPARATUS AND METHOD FOR LEAK DETECTION USING HYDROGEN AS TRACER GAS

PROBLEM TO BE SOLVED: To provide a solid, light and inexpensive leak detection apparatus capable of detecting large leak up to 10Pa.m/s at fine sensitivity.SOLUTION: The apparatus for leak detection using hydrogen as tracer gas is connected to a specimen 3. The apparatus includes: a hydrogen sensor...

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Hauptverfasser: KETAN PATEL, FREDERIC ROUVEYRE
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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creator KETAN PATEL
FREDERIC ROUVEYRE
description PROBLEM TO BE SOLVED: To provide a solid, light and inexpensive leak detection apparatus capable of detecting large leak up to 10Pa.m/s at fine sensitivity.SOLUTION: The apparatus for leak detection using hydrogen as tracer gas is connected to a specimen 3. The apparatus includes: a hydrogen sensor 2 installed in a low-pressure enclosure 6 and including a MOS transistor configured by covering a diode, a resistor and a gate with a palladium catalyst; pump means 7 connected to the low-pressure enclosure 6; a manometer 9 configured so as to measure pressure in a vacuum line formed by the low-pressure enclosure 6 connected to the pump means 7; and a multi-directional valve 4 having a first port capable of inducing a gas flow containing tracer gas into the vacuum line and a second port capable of inducing neutral gas. By the method, the pressure of the vacuum line can be stabilized to evade fluctuation in hydrogen measurement.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
title APPARATUS AND METHOD FOR LEAK DETECTION USING HYDROGEN AS TRACER GAS
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