GB2218213B - Remotely calabratable instrument system and method of operation thereof - Google Patents

Remotely calabratable instrument system and method of operation thereof

Info

Publication number
GB2218213B
GB2218213B GB8910904A GB8910904A GB2218213B GB 2218213 B GB2218213 B GB 2218213B GB 8910904 A GB8910904 A GB 8910904A GB 8910904 A GB8910904 A GB 8910904A GB 2218213 B GB2218213 B GB 2218213B
Authority
GB
United Kingdom
Prior art keywords
calabratable
remotely
instrument system
instrument
remotely calabratable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB8910904A
Other versions
GB2218213A (en
GB8910904D0 (en
Inventor
Frederick L Maltby
Richard G Hall
Jonathan L Kramer
Howard S Hoopes
Steven R Petersen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Drexelbrook Controls Inc
Original Assignee
Drexelbrook Controls Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/791,319 external-priority patent/US4723122A/en
Application filed by Drexelbrook Controls Inc filed Critical Drexelbrook Controls Inc
Publication of GB8910904D0 publication Critical patent/GB8910904D0/en
Publication of GB2218213A publication Critical patent/GB2218213A/en
Application granted granted Critical
Publication of GB2218213B publication Critical patent/GB2218213B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
    • G01F23/261—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields for discrete levels
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
GB8910904A 1985-10-25 1989-05-12 Remotely calabratable instrument system and method of operation thereof Expired - Fee Related GB2218213B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/791,319 US4723122A (en) 1985-10-25 1985-10-25 Remotely calibratable instrument system
GB8625404A GB2184241B (en) 1985-10-25 1986-10-23 Remotely calibratable instrument system

Publications (3)

Publication Number Publication Date
GB8910904D0 GB8910904D0 (en) 1989-06-28
GB2218213A GB2218213A (en) 1989-11-08
GB2218213B true GB2218213B (en) 1990-07-04

Family

ID=26291448

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8910904A Expired - Fee Related GB2218213B (en) 1985-10-25 1989-05-12 Remotely calabratable instrument system and method of operation thereof
GB8910905A Expired - Fee Related GB2218214B (en) 1985-10-25 1989-05-12 Admittance-responsive instrument system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8910905A Expired - Fee Related GB2218214B (en) 1985-10-25 1989-05-12 Admittance-responsive instrument system

Country Status (1)

Country Link
GB (2) GB2218213B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024402C1 (en) * 1990-08-01 1991-10-31 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
US5710552A (en) * 1994-09-30 1998-01-20 Rosemount Inc. Barrier device
EP0790489B1 (en) * 1996-02-16 2000-05-17 Dr. Johannes Heidenhain GmbH Apparatus and method for switching between different operating characteristics of a sensor device
NZ334610A (en) 1997-07-14 2000-10-27 Matsushita Electric Industrial Co Ltd Automatic compensation sensor, controller compensates output signal from signal output terminal
DE19825159A1 (en) 1998-06-05 1999-12-09 Bosch Gmbh Robert Electronic switch
EP1098174B1 (en) 1999-11-05 2007-06-13 Micronas GmbH Programmable sensor
CN105606179A (en) * 2015-12-17 2016-05-25 上海科勒电子科技有限公司 Water tank water level detection method and system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2441832A1 (en) * 1974-08-31 1976-03-11 Hauni Werke Koerber & Co Kg PROCEDURE AND ARRANGEMENT FOR CAPACITIVE TESTING OF TOBACCO DENSITY IN THE ENDS OF ROD-SHAPED ARTICLES OF THE TOBACCO PROCESSING INDUSTRY
AU571446B2 (en) * 1982-08-25 1988-04-21 Venture Measurement Company Llc Self calibrating capacitance level sensor

Also Published As

Publication number Publication date
GB2218213A (en) 1989-11-08
GB2218214A (en) 1989-11-08
GB8910904D0 (en) 1989-06-28
GB8910905D0 (en) 1989-06-28
GB2218214B (en) 1990-07-04

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20001023