Title:
熱式流量計および流量補正方法
Document Type and Number:
Japanese Patent JP7248455
Kind Code:
B2
Abstract:
A thermal flowmeter includes a tube, a temperature measuring device disposed on the tube and detecting a first temperature of a fluid, a heating and temperature measuring device disposed on the tube and detecting a second temperature of the fluid, a controller causing the heating and temperature measuring device to generate heat, a power determining unit determining a power consumption of the heating and temperature measuring device, a flow rate obtaining unit converting the power consumption into a flow rate, a flow rate correcting unit correcting the flow rate, a memory unit storing a first zero-point power consumption, a zero-point power ratio calculating unit calculating a zero-point power ratio based on the first zero-point power consumption and a second zero-point power consumption, and a setting unit calculating a correction factor based on the zero-point power ratio and setting the correction factor in the flow rate correcting unit.
Inventors:
Yoshio Yamazaki
Application Number:
JP2019038315A
Publication Date:
March 29, 2023
Filing Date:
March 04, 2019
Export Citation:
Assignee:
Azbil Co., Ltd.
International Classes:
G01F1/696
Domestic Patent References:
| JP2019020291A | ||||
| JP2011209147A | ||||
| JP2011209152A | ||||
| JP2019027926A | ||||
| JP2003262596A | ||||
| JP2003106886A | ||||
| JP2005188301A |
Foreign References:
| US20060213263 |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa