Title:
エアゲージ及びノズルから対象物までの距離を感知する方法
Document Type and Number:
Japanese Patent JP5155031
Kind Code:
B2
Abstract:
A gas gauge (100) for sensing distance to an object (132) includes a gas supply system (102) and a nozzle (128) that supplies the gas from the gas supply system (102) to a space between the nozzle (128) and the object (132). For example, the gas supply system (102) supplies the gas with a flow rate that corresponds to a flow in a transitional region between laminar flow and turbulent flow. A surface of the nozzle (128) may be roughened so as to increase a friction factor across the surface, which increases gas pressure drop and also a gain of the nozzle (128). Noise generated by the increased flow rate may be attenuated using one or more strategically placed Helmholtz attenuators and/or snubbers (120).
Inventors:
Vogel, Herman
Application Number:
JP2008161133A
Publication Date:
February 27, 2013
Filing Date:
June 20, 2008
Export Citation:
Assignee:
AS ML Holding N.V.
International Classes:
G01B13/12
Domestic Patent References:
| JP2004198429A | ||||
| JP2002090191A | ||||
| JP52071826A | ||||
| JP5047719U | ||||
| JP11083145A | ||||
| JP2000509461A | ||||
| JP2003328723A | ||||
| JP2004198430A | ||||
| JP2004232637A |
Foreign References:
| US5298073 |
Attorney, Agent or Firm:
Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki
Shinji Oga
Toshifumi Onuki