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Title:
DIFFERENTIAL PRESSURE TRANSMITTER AND TEMPERATURE ESTIMATING METHOD THEREFOR
Document Type and Number:
Japanese Patent JP3758185
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a differential pressure transmitter capable of preventing coagulation of a fluid which is to be measured by estimating heat retention condition of a pressure guiding piping or a flange which guide in the fluid to be measured, using the signal of a temperature sensor built in a case.
SOLUTION: A differential pressure/pressure transmitter detects the pressure of a fluid which is to be measured from a process. The differential pressure transmitter comprises a single or a plurality of temperature sensors, a calculation circuit, and a storage circuit, and has such function as estimates the temperature of the transmitter flange or the transmitter external pressure guiding piping from the signal of the temperature sensor, and outputs a report signal if the estimated temperature approaches a preset temperature.


Inventors:
Tatsuhiko Miyauchi
Kaoru Sonoda
Application Number:
JP2002028403A
Publication Date:
March 22, 2006
Filing Date:
February 05, 2002
Export Citation:
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Assignee:
Yokogawa Electric Corporation
International Classes:
G01L19/00; G01L13/00; (IPC1-7): G01L19/00; G01L13/00
Domestic Patent References:
JP3246434A
JP9229800A
JP8220062A
JP2001099720A
JP2000252181A
JP2000277237A
JP7071484A



 
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