DE3303017C1 - Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets - Google Patents

Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets

Info

Publication number
DE3303017C1
DE3303017C1 DE19833303017 DE3303017A DE3303017C1 DE 3303017 C1 DE3303017 C1 DE 3303017C1 DE 19833303017 DE19833303017 DE 19833303017 DE 3303017 A DE3303017 A DE 3303017A DE 3303017 C1 DE3303017 C1 DE 3303017C1
Authority
DE
Germany
Prior art keywords
monitoring
self
magnetic
flow test
circuit
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
Application number
DE19833303017
Other languages
German (de)
Inventor
Dipl-Ing Pol Roland Van Der
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.)
Krohne Messtechnik GmbH and Co KG
Original Assignee
Krohne Messtechnik GmbH and Co KG
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
Application filed by Krohne Messtechnik GmbH and Co KG filed Critical Krohne Messtechnik GmbH and Co KG
Priority to DE19833303017 priority Critical patent/DE3303017C1/en
Application granted granted Critical
Publication of DE3303017C1 publication Critical patent/DE3303017C1/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
    • G01F1/56Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using electric or magnetic effects
    • G01F1/58Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60Circuits therefor

Abstract

For self-monitoring of a measurement converter (2) for magnetic/inductive flow test sets, two mutually independent comparator stages (6, 10) are provided in order to increase the accuracy. The one comparator stage (6) monitors two input amplifiers (4, 5) which are connected on the input side to a test-signal source (3). Two compensation amplifiers (8, 9) are connected in parallel to only one of the two input amplifiers (4) and are monitored by the other comparator stage (10).
DE19833303017 1983-01-29 1983-01-29 Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets Expired DE3303017C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833303017 DE3303017C1 (en) 1983-01-29 1983-01-29 Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833303017 DE3303017C1 (en) 1983-01-29 1983-01-29 Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets

Publications (1)

Publication Number Publication Date
DE3303017C1 true DE3303017C1 (en) 1984-07-26

Family

ID=6189555

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833303017 Expired DE3303017C1 (en) 1983-01-29 1983-01-29 Circuit for self-monitoring of a measurement converter for magnetic/inductive flow test sets

Country Status (1)

Country Link
DE (1) DE3303017C1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222263A (en) * 1988-08-26 1990-02-28 Danfoss As Methods of magneto-inductive flow measurement and magneto-inductive flowmeters
WO1999034174A1 (en) * 1997-12-24 1999-07-08 Abb Instrumentation Limited Electrode integrity checking
EP1584902A1 (en) 2004-04-08 2005-10-12 Krohne Messtechnik Gmbh & Co. Kg Electromagnetic flowmeter and method for operating an electromagnetic flowmeter
DE19854868B4 (en) * 1998-06-01 2005-10-27 Mitsubishi Denki K.K. Thermoflußmeßgerät and fuel control device
WO2006050015A1 (en) 2004-11-01 2006-05-11 Rosemount Inc. Magnetic flowmeter with built-in simulator
WO2006065562A1 (en) * 2004-12-15 2006-06-22 Rosemount, Inc. Instrument loop adapter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3829063C3 (en) * 1988-08-26 1998-01-29 Danfoss As Method for drift detection of a transducer in magnetic-inductive flow measurement and magnetic-inductive flow meter
FR2635863A1 (en) * 1988-08-26 1990-03-02 Danfoss As METHOD FOR THE MAGNETIC-INDUCTIVE MEASUREMENT OF MAGNETIC-INDUCTIVE FLOWMETER AND FLOWMETER
DE3829063A1 (en) * 1988-08-26 1990-03-08 Danfoss As METHOD FOR MAGNETIC-INDUCTIVE FLOW MEASUREMENT AND MAGNETIC-INDUCTIVE FLOW METER
NL8902141A (en) * 1988-08-26 1990-03-16 Danfoss As METHOD FOR MAGNETIC-INDUCTIVE LIQUID FLOW MEASUREMENT AND A MAGNETIC-INDUCTIVE LIQUID FLOW METER.
US4972722A (en) * 1988-08-26 1990-11-27 Danfoss A/S Magnetic inductive flow meter
BE1003049A3 (en) * 1988-08-26 1991-11-05 Danfoss As METHOD AND DEVICE FOR MEASURING FLOW BY INDUCTION.
GB2222263B (en) * 1988-08-26 1992-09-02 Danfoss As Methods of magneto-inductive flow measurement and magneto-inductive flowmeters
GB2222263A (en) * 1988-08-26 1990-02-28 Danfoss As Methods of magneto-inductive flow measurement and magneto-inductive flowmeters
WO1999034174A1 (en) * 1997-12-24 1999-07-08 Abb Instrumentation Limited Electrode integrity checking
DE19854868B4 (en) * 1998-06-01 2005-10-27 Mitsubishi Denki K.K. Thermoflußmeßgerät and fuel control device
EP1584902A1 (en) 2004-04-08 2005-10-12 Krohne Messtechnik Gmbh & Co. Kg Electromagnetic flowmeter and method for operating an electromagnetic flowmeter
DE102004018078B3 (en) * 2004-04-08 2006-01-05 Krohne Meßtechnik GmbH & Co KG Method for operating a magnetic-inductive flowmeter
WO2006050015A1 (en) 2004-11-01 2006-05-11 Rosemount Inc. Magnetic flowmeter with built-in simulator
US7073393B2 (en) 2004-11-01 2006-07-11 Rosemount Inc. Magnetic flowmeter with built-in simulator
WO2006065562A1 (en) * 2004-12-15 2006-06-22 Rosemount, Inc. Instrument loop adapter

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Legal Events

Date Code Title Description
D1 Grant (no unexamined application published) patent law 81
8100 Publication of the examined application without publication of unexamined application
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee