JPS57192829A - Calibrating method for eddy-current system current meter - Google Patents

Calibrating method for eddy-current system current meter

Info

Publication number
JPS57192829A
JPS57192829A JP56077731A JP7773181A JPS57192829A JP S57192829 A JPS57192829 A JP S57192829A JP 56077731 A JP56077731 A JP 56077731A JP 7773181 A JP7773181 A JP 7773181A JP S57192829 A JPS57192829 A JP S57192829A
Authority
JP
Japan
Prior art keywords
flow
velocity
computing
eddy
detecting parts
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.)
Pending
Application number
JP56077731A
Other languages
Japanese (ja)
Inventor
Motoyoshi Ikemi
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP56077731A priority Critical patent/JPS57192829A/en
Publication of JPS57192829A publication Critical patent/JPS57192829A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
    • G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

PURPOSE:To perform a high-precise measurement, by a method wherein detecting parts to be calibered are placed in a plural number of locations being different in temperature and velocity of flow, and a measuring signal and an absolute velocity of flow are found to perform a given computation. CONSTITUTION:Outputs of detecting parts 101-10n of an eddy-current system current meter, which are placed in a plural number of positions of fluid to be measured being different in temperature and velocity of flow, are inputted to signal processing parts 501-50n, consisting of an differential computer, a rectification smoothing circuit, and a computing circuit for removing an unbalanced voltage, and a computing circuit for finding an absolute velocity of flow value. Outputted measuring signals eF and v are stored in a memory part 63 of a computing processor 60. Changing of the exciting frequencies of the detecting parts 101-10n forms an equality of eF(v)=evt+DELTAet, and an output sensitivity ev and unbalanced voltage DELTAet are computed from data in the memory part 63. A coorection is made on a measuring signal eF by the use of the computing result, and this enables obtaining of high-precise measurements.
JP56077731A 1981-05-22 1981-05-22 Calibrating method for eddy-current system current meter Pending JPS57192829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56077731A JPS57192829A (en) 1981-05-22 1981-05-22 Calibrating method for eddy-current system current meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077731A JPS57192829A (en) 1981-05-22 1981-05-22 Calibrating method for eddy-current system current meter

Publications (1)

Publication Number Publication Date
JPS57192829A true JPS57192829A (en) 1982-11-27

Family

ID=13642042

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077731A Pending JPS57192829A (en) 1981-05-22 1981-05-22 Calibrating method for eddy-current system current meter

Country Status (1)

Country Link
JP (1) JPS57192829A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339984B2 (en) 2008-11-13 2016-05-17 Packsize, Llc Box gluing device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128363A (en) * 1977-04-14 1978-11-09 Power Reactor & Nuclear Fuel Dev Corp Flow meter of eddy current type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53128363A (en) * 1977-04-14 1978-11-09 Power Reactor & Nuclear Fuel Dev Corp Flow meter of eddy current type

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9339984B2 (en) 2008-11-13 2016-05-17 Packsize, Llc Box gluing device
US9505190B2 (en) 2008-11-13 2016-11-29 Packsize Llc Automated gluing device
US9764525B2 (en) 2008-11-13 2017-09-19 Packsize Llc Box gluing device
US9925733B2 (en) 2008-11-13 2018-03-27 Packsize Llc Automated box gluing device

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