System of verifying operation of electromagnetic flow meter

• US 9,404,788 B2
• Filed: 06/25/2013
• Issued: 08/02/2016
• Est. Priority Date: 06/26/2012
• Status: Active Grant

• Current Assignee: Yokogawa Electric Corporation
• Original Assignee: Yokogawa Electric Corporation
• Inventors: Tanabe, Seiji, Yasuda, Norio
• Primary Examiner(s): Rogers, David A
• Application Number:
  US13/926,012
• Publication Number:
  US 20130340498A1
• Time in Patent Office: 1,134 Days
• US Class Current: 1/1
• CPC Class Codes: G01F 1/58 by electromagnetic flowmeters
• CPC Class Codes: G01F 25/10 of flowmeters

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

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.