Method for calibrating a multiple flow conduit flow meter

Patent metadata

Field	Value
Publication number	US-9719838-B2
Application number	US-201414547746-A
Country	US
Kind code	B2
Filing date	Nov 19, 2014
Priority date	Aug 24, 2006
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A method for calibrating a multiple flow conduit flow meter ( 200 ) is provided according to an embodiment of the invention. The multiple flow conduit flow meter ( 200 ) includes a first flow conduit ( 201 ) conducting a first flow stream and a pair of first pickoff sensors ( 215, 215 ′) affixed to the first flow conduit ( 201 ). The multiple flow conduit flow meter ( 200 ) further includes at least one additional flow conduit ( 202 ) conducting at least one additional flow stream and at least one pair of additional pickoff sensors ( 216, 216 ′) affixed to the at least one additional flow conduit ( 202 ).

First claim

What is claimed is:

1. A calibration method for a multiple flow conduit flow meter, the method comprising:
zeroing out the multiple flow conduit flow meter;
zeroing out one or more reference meters in communication with the multiple flow conduit flow meter;
measuring a first flow through a first flow conduit of the multiple flow conduit flow meter using the multiple flow conduit flow meter and using the one or more reference meters;
measuring a second flow through at least one additional flow conduit of the multiple flow conduit flow meter using the multiple flow conduit flow meter and using the one or more reference meters; and
determining two or more flow calibration factors (FCFs) for the multiple flow conduit flow meter using a first flow measurement and an at least one additional flow measurement.

2. The method of 1 , with the determining comprising determining the two or more flow calibration factors (FCFs) for the multiple flow conduit flow meter using the

equation
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11

FCF
12

FCF
21

FCF
22

}

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Assignees

• Micro Motion Inc

Inventors

• Stack Charles Paul
• Patten Andrew Timothy
• Lanham Gregory Treat
• Bell Mark James

Classifications

• G01N11/16

  by measuring damping effect upon oscillatory body · CPC title

• G01F15/024

  involving digital counting · CPC title

• G01F1/8477

  with multiple measuring conduits · CPC title

• G01N2009/006

  vibrating tube, tuning fork · CPC title

• G01F1/8413 Primary

  means for influencing the flowmeter's motional or vibrational behaviour, e.g., conduit support or fixing means, or conduit attachments · CPC title