GAS SHUT-OFF DEVICE

PROBLEM TO BE SOLVED: To provide a gas shut-off device in which the number of times of detecting sensor abnormality is counted, the detected number of times is compared with a predetermined number of times and when the detected number of times is less than the predetermined number of times, even wit...

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Main Authors YUASA KENICHIRO, SAKANO TAKAHIRO, ASADA SHOJI, FUJII YASUHIRO, MASUDA TAKEHIRO, ASANO KAZUTAKA, SAKUMA HIROHISA, OWAKU TAKASHI, ISHIDA HIROSHI, IWAMOTO RYUJI
Format Patent
LanguageEnglish
Published 07.10.2013
Subjects
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
FEEDING FUEL TO COMBUSTION APPARATUS
HEATING
LIGHTING
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
MECHANICAL ENGINEERING
METERING BY VOLUME
PHYSICS
TESTING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a gas shut-off device in which the number of times of detecting sensor abnormality is counted, the detected number of times is compared with a predetermined number of times and when the detected number of times is less than the predetermined number of times, even without sensor abnormality cancellation input, recovery can be performed by a manual recovering operation.SOLUTION: A gas shut-off device comprises sensor abnormality determination means 6 which determines predetermined sensor abnormality in flow measurement and outputs a shut-off signal when abnormality is established. The number of times of determining abnormality by means of the sensor abnormality determination means 6 is counted by sensor abnormality time count means 8 and when sensor abnormality time determination means 7 determines that a time count value of the sensor abnormality time count means 8 is less than a sensor abnormality determination count 9, recovery can be performed by manual recovery means 11 in accordance with an instruction of recovery method decision means 10.
Bibliography:Application Number: JP20120075058