JPS57192829A - Calibrating method for eddy-current system current meter - Google Patents
Calibrating method for eddy-current system current meterInfo
- 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
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
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.
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9339984B2 (en) | 2008-11-13 | 2016-05-17 | Packsize, Llc | Box gluing device |
Citations (1)
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 |
-
1981
- 1981-05-22 JP JP56077731A patent/JPS57192829A/en active Pending
Patent Citations (1)
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)
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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