Title:
流量計
Document Type and Number:
Japanese Patent JP6587129
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a flowmeter which is simple and can be miniaturized and measures a flow rate in the pipe line.SOLUTION: A flowmeter for measuring a flow rate inside a pipe line includes: a pipe line into which a fluid passes; at least two thin wall parts provided in a pipe wall of a straight pipe portion of the pipe line; a strain gauge pasted to the thin wall part; and an operation processing device which processes an output of the strain gauge. A very small projection part is provided in the flow passage at an inner side of the pipe line of the thin wall part of one side. The operation processing means is stored with a strain gauge pasted to the thin wall part having a very fine projection previously obtained by a calibration test and a calibration expression showing a relationship between an output difference of the strain gauge pasted to the thin wall part having no very small projection and the flow rate, and obtains the flow rate from the output difference by using the calibration expression.SELECTED DRAWING: Figure 1
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Inventors:
Ryo Kosaka
Saito Takumi
Saito Takumi
Application Number:
JP2015172675A
Publication Date:
October 09, 2019
Filing Date:
September 02, 2015
Export Citation:
Assignee:
National Institute of Advanced Industrial Science and Technology
International Classes:
G01F1/50; G01F25/00
Domestic Patent References:
| JP6077236U | ||||
| JP8110279A | ||||
| JP2015114191A | ||||
| JP8062004A | ||||
| JP10132676A |
Foreign References:
| US20130247675 | ||||
| WO1999047895A1 |