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특허 상세정보

Redundant level measuring system

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G01F-023/02   
미국특허분류(USC) 073/324; 073/306; 073/309; 073/328; 073/329; 073/325; 073/326; 073/319; 073/322.5; 073/313; 073/323; 073/305; 073/324; 116/227; 116/204; 116/276
출원번호 US-0934194 (2001-08-21)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Wood, Phillips, Katz, Clark & Mortimer
인용정보 피인용 횟수 : 12  인용 특허 : 13
초록

A redundant level measuring system comprises a chamber for fluidic coupling to a process vessel whereby material level in the vessel equalizes with material level in the chamber. A float including a magnet in the chamber rises and falls with material level in the chamber. A magnet actuated visual indicator is mounted to the chamber for indicating level of the magnet in the chamber. A measurement instrument includes a probe and a measurement circuit. The instrument is mounted atop the chamber with the probe extending downwardly into the chamber. The measu...

대표
청구항

A redundant level measuring system comprises a chamber for fluidic coupling to a process vessel whereby material level in the vessel equalizes with material level in the chamber. A float including a magnet in the chamber rises and falls with material level in the chamber. A magnet actuated visual indicator is mounted to the chamber for indicating level of the magnet in the chamber. A measurement instrument includes a probe and a measurement circuit. The instrument is mounted atop the chamber with the probe extending downwardly into the chamber. The measu...

이 특허에 인용된 특허 (13)

  1. Yang F. Y.,TWX. Apparatus for sensing liquid level. USP2000056067854.
  2. Peter Hochstein (Troy MI). Capacitive probe for use in a system for remotely measuring the level of fluids. USP1992035097703.
  3. Mulrooney Michael J. ; Carsella Boyce M.. Dual compartment instrument housing. USP2000056062095.
  4. Steiner George A. (4425 Harvard Avenue Montreal ; Quebec CAX H4A 2W9). Electronic dipstick for indicating the oil level of an engine. USP1994045299456.
  5. Outwater John O. (Boston MA) Kohse Gordon F. (Arlington MA) Driscoll Michael J. (Cambridge MA) Harling Otto K. (Hingham MA). Liquid level indicator for high pressure, hostile environment. USP1992045103674.
  6. Gebauer Heinz (Ottikon-Gossau CHX). Liquid-level indicator. USP1984074457171.
  7. Brown David E. ; Purcel David E.. Magnetic float assembly. USP1998045743137.
  8. Varga Otto Herman,GBX ; Carter Jason,GBX. Magnetic float type liquid level gauges. USP2001076253611.
  9. Bonetti Giulio (Garbagnate Milanese ITX). Magnetic level indicators. USP1984114483193.
  10. Lovett Rodley C. (Keene TX). Magnetic sight gage sensor. USP1992085136884.
  11. Sebek Rolf (Oberkinzig DT). Magnetically actuated fluid-level indicator. USP1976063964312.
  12. Omet Reinhard (Babenhausen DEX) Kindsvater Hans (Bad Homburg DEX) Wall Hans J. (Darmstadt DEX). Magneto-optic measuring device. USP1987094695796.
  13. Bonetti Giulio (Milan ITX). Pressurized magnetic float level indicator for receptacles containing liquids at high pressure and temperature. USP1989104870862.