Title:
FLOWMETER AND METHOD OF FABRICATING THE SAME
Document Type and Number:
WIPO Patent Application WO/2016/166946
Kind Code:
A1
Abstract:
A flowmeter (1) including a fluid flow channel formed on a substrate that directs a fluid from an upstream position to a downstream position. A heater (14) is disposed between the upstream and downstream positions. A first temperature sensor (16) detects temperature of the fluid at the upstream position and a second temperature sensor (18) detects temperature of the fluid at the downstream position. At least one third temperature sensor detects temperature of the heater (14). A controller (13) maintains the heater (14) at a predetermined temperature based on the temperature sensed by the at least one third temperature sensor. A flow measurement output circuit (50) generates a gain stage output of a temperature differential between the temperature detected by the first temperature sensor (16) and the temperature detected by the second temperature sensor (18).
Inventors:
BERGSTEDT STEVE (JP)
Application Number:
PCT/JP2016/001876
Publication Date:
October 20, 2016
Filing Date:
March 31, 2016
Export Citation:
Assignee:
FUNAI ELECTRIC CO (JP)
International Classes:
G01F1/696
Foreign References:
| JP2006030110A | 2006-02-02 | |||
| JP2007071687A | 2007-03-22 | |||
| US5982221A | 1999-11-09 | |||
| US6097239A | 2000-08-01 | |||
| JP2001221670A | 2001-08-17 |
Attorney, Agent or Firm:
KOMATA, Junichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, JP)
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