Title:
温度補償型絶対圧力センサ
Document Type and Number:
Japanese Patent JP6858847
Kind Code:
B2
Abstract:
A differential pressure transmitter configured to provide an absolute pressure measurement is presented. The differential pressure sensor comprises a first process fluid inlet. The differential pressure sensor also comprises a second process fluid inlet. The differential pressure sensor also comprises a differential pressure sensor operably coupled to the first and second process fluid inlets. The differential pressure sensor also comprises an absolute pressure cap coupled to the second pressure inlet. The cap comprises a volume of gas within an expansion feature. The volume of gas has a reference pressure. The expansion feature is configured to allow for expansion of the volume of gas in response to a temperature increase, such that the volume of gas maintains the reference pressure.
Inventors:
Hunt, charles
Daniel, Noberg
Daniel, Noberg
Application Number:
JP2019517262A
Publication Date:
April 14, 2021
Filing Date:
September 21, 2017
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01L7/00; G01L7/06; G01L7/16; G01L19/04
Domestic Patent References:
| JP2013113725A | ||||
| JP6002191U | ||||
| JP58170657A | ||||
| JP7286926A | ||||
| JP2014032186A | ||||
| JP1071640U | ||||
| JP1089348U | ||||
| JP2008511003A |
Foreign References:
| US6722193 | ||||
| US5870695 | ||||
| US3472077 | ||||
| CN102494835A |
Attorney, Agent or Firm:
Patent business corporation Tsukuni