Title:
機械式計器用の自己動力型光学式検出装置
Document Type and Number:
Japanese Patent JP6396927
Kind Code:
B2
Abstract:
An embodiment of the present invention includes a display device including a mechanical indicator, a reference photodetector, a measurement photodetector, and an opaque shroud. The opaque shroud is connected to the mechanical indicator to variably cover the measurement photodetector based on a position of the mechanical indicator. The opaque shroud does not cover the reference photodetector.
Inventors:
Schmucker, Mark Stephen
Application Number:
JP2015558902A
Publication Date:
September 26, 2018
Filing Date:
February 18, 2014
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01D13/26; G01D13/24; G01K5/62; G01L7/06; G01L9/00
Domestic Patent References:
| JP2005100087A | ||||
| JP4830451A | ||||
| JP55140125A | ||||
| JP6288851A |
Foreign References:
| US4502334 |
Attorney, Agent or Firm:
Nobuyuki Okajima