Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Patent
1989-03-13
1991-09-03
Shoop, Jr., William M.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
361 93, 361 57, H02H 900
Patent
active
050459635
ABSTRACT:
The invention relates to a protective circuit for the induction coil of a magnetically inductive type flow meter. If the leads of a flow meter used in an explosive environment are cut there can occur a high voltage and resulting sparking which could cause an explosion. The invention provides a circuit in which a short circuit path is provided for the induction coil if the leads thereof are severed to prevent the development of a high voltage which could cause dangerous sparking.
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Hansen Henning M.
Pedersen Allan S.
Danfoss A/S
Easton Wayne B.
Shoop Jr. William M.
Wysocki A. Jonathan
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