Title:
コリオリ質量流量センサー
Document Type and Number:
Japanese Patent JP2007518077
Kind Code:
A
Abstract:
A Coriolis mass flow sensor includes a flow tube, a light source, and a light pipe having a light inlet situated to receive light from the light source and a light outlet for emitting light received from the light source. A light detector receives light from the light pipe light outlet, and a drive device vibrates the flow tube such that the flow tube moves through a light path between the light outlet of the light pipe and the light detector. In certain embodiments, the light pipe defines a generally square cross section. A sensing aperture having a predetermined shape is situated between the light outlet of the light pipe and the light detector. The sensing aperture passes a portion of the light emitted from the light outlet of the light to the light detector, such that the light entering the light detector has the predetermined shape.
Inventors:
Todd Berger
Dill joseph sea
Birds All James
Brown, Thomas G
Dill joseph sea
Birds All James
Brown, Thomas G
Application Number:
JP2006547598A
Publication Date:
July 05, 2007
Filing Date:
December 31, 2004
Export Citation:
Assignee:
Emerson Electric Company
International Classes:
G01F1/84
Domestic Patent References:
| JP2002062175A | 2002-02-28 | |||
| JPH02503359A | 1990-10-11 | |||
| JPS5395664A | 1978-08-22 | |||
| JPS61234304A | 1986-10-18 | |||
| JP2003121664A | 2003-04-23 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hiroyuki Uchida
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Hiroyuki Uchida