Title:
【発明の名称】炎阻止ヘッダ付きモジュラ・トランスミッタ
Document Type and Number:
Japanese Patent JP3174058
Kind Code:
B2
Abstract:
A transmitter with a flame arresting header senses a pressure of a process fluid with a diaphragm which is sealed to the header. The diaphragm transfers the pressure of the process fluid acting an outer surface of the diaphragm to a fill fluid that isolates an inner surface of the diaphragm, and a pressure sensor enclosed in the transmitter senses the pressure of the fill fluid providing an output representative of the pressure of the process fluid. The header includes a chamber on the header's outer face and a passageway extending from the chamber to a tapered opening inside the transmitter with a first portion adjacent to the tapered opening shaped to receive an inlet tube leading to the sensor and a second flame isolating portion open to the chamber. The fill fluid fills the chamber, the passageway, and the inlet tube and is sealed in with a tapered seal pressed into the tapered opening around the inlet tube. The second passageway portion is shaped for flame isolating the tapered seal from the process fluid.
Inventors:
Broden, David A.
Application Number:
JP51830093A
Publication Date:
June 11, 2001
Filing Date:
March 01, 1993
Export Citation:
Assignee:
Rosemount Incorporated
International Classes:
G01L7/08; G01L9/00; G01L19/06; G01L13/02; G01L19/14; (IPC1-7): G01L19/00; G01L13/02; G01L19/06
Domestic Patent References:
| JP57108634A | ||||
| JP443933A | ||||
| JP533044U | ||||
| JP239139U | ||||
| JP51105381U | ||||
| JP6390135U | ||||
| JP1152232U | ||||
| JP5945544U |
Other References:
【文献】米国特許4833922(US,A)
【文献】国際公開91/4475(WO,A1)
【文献】国際公開92/8116(WO,A1)
【文献】国際公開91/4475(WO,A1)
【文献】国際公開92/8116(WO,A1)
Attorney, Agent or Firm:
Michito Hiraki (1 person outside)