IP Library › Granted Patent US 9,404,788
Granted Patent B2
US 9,404,788 · App. 13/926,012 · Granted Aug 2, 2016

System of verifying operation of electromagnetic flow meter

Inventors: Seiji Tanabe (Musashino, JP); Norio Yasuda (Musashino, JP)
Assignee: YOKOGAWA ELECTRIC CORPORATION
G01F25/0007G01F1/58
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Quick Facts
Patent No.
US 9,404,788
App. No.
13/926,012
Granted
Aug 2, 2016
Kind
B2
Abstract

A system of verifying an operation of an electromagnetic flow meter, includes a plurality of comparing modules configured to compare a plurality of parameters respectively obtained from modules of the electromagnetic flow meter with threshold values respectively, to output compared results, and a determining module configured to determine in real time an operation state of a block in the electromagnetic flow meter based on at least one of the compared results output from the plurality of comparing modules.

Claims (20)

1. A system of verifying an operation of an electromagnetic flow meter, comprising:

a plurality of comparing modules configured to compare a plurality of parameters respectively obtained from modules of the electromagnetic flow meter with threshold values respectively, to output compared results; and

a determining module configured to determine in real time an operation state of at least one of a block of an exciting block, a magnetic circuit block, and a flow rate calculating block, in the electromagnetic flow meter based on at least one of the compared results output from the plurality of comparing modules,

wherein the determining module is configured to determine in real time the operation state of the block in the electromagnetic flow meter based on a combination of the compared results output from the plurality of comparing modules.

2. The system of verifying an operation of an electromagnetic flow meter according to claim 1 , wherein the plurality of parameters include a zero adjustment value, an electrode potential, an electrode wetted portion resistance value, an exciting current value and an integrated value.

3. The system of verifying an operation of an electromagnetic flow meter according to claim 1 , wherein the block includes any of an exciting block, a magnetic circuit block and a calculating process block.

4. The system of verifying an operation of an electromagnetic flow meter according to claim 1 , wherein the electromagnetic flow meter is a double frequency excitation system.

5. The system of verifying an operation of an electromagnetic flow meter according to claim 1 , comprising an operation verification tool,

wherein the operation verification tool comprises:

the plurality of comparing modules,

the determining module, and

an external connector configured to connect the operation verification tool to the electromagnetic flow meter.

6. The system of verifying an operation of an electromagnetic flow meter according to claim 1 , comprising an operation verification tool,

wherein the operation verification tool comprises:

the plurality of comparing modules,

the determining module, and

a wireless communication module configured to connect the operation verification tool to the electromagnetic flow meter.

7. An operational status verification apparatus configured to check for malfunctioning in an operational state of an electromagnetic flow meter, comprising:

a plurality of comparing modules configured to compare a plurality of parameters respectively obtained from modules of the electromagnetic flow meter with threshold values for proper functionality respectively, to output compared results; and

a determining module configured to determine in real time a malfunctioning operational state of at least one of a block of an exciting block, a magnetic circuit block, and a flow rate calculating block, in the electromagnetic flow meter based on a combination of the compared results output from the plurality of comparing modules.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 25, 2013
From: TANABE, SEIJI; YASUDA, NORIO
To: YOKOGAWA ELECTRIC CORPORATION
Reel/Frame 030678/0431 →
Priority Claims (1)
JP 2012-142989 · Jun 26, 2012 · national
Continuity (1)
Related Publication 20130340498A1 · Dec 26, 2013