Title:
ELECTROMAGNETIC FLOW METER AND EXCITATION CONTROL METHOD
Document Type and Number:
Japanese Patent JP2016142648
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress occurrence of air bubbles due to gas dissolved in fluid.SOLUTION: A flow determination unit 16A determines the presence or absence of flow of fluid in a measurement tube by comparing a flow rate measurement value with a preset flow rate reference value. When the flow determination unit 16A determines the absence of flow of the fluid in a measurement tube P, an excitation control unit 16B restricts an excitation current IL to a current value lower than the excitation current at a normal measurement time. When the flow determination unit 16A determines the presence of flow of the fluid, the excitation control unit cancels the restriction of the excitation current IL.SELECTED DRAWING: Figure 1
Inventors:
SAKANO YOHEI
Application Number:
JP2015019101A
Publication Date:
August 08, 2016
Filing Date:
February 03, 2015
Export Citation:
Assignee:
AZBIL CORP
International Classes:
G01F1/60
Attorney, Agent or Firm:
Masaki Yamakawa
Shigeki Yamakawa
Shigeki Yamakawa