The pressure transmitter which used ferromagnetic fluid for restoration fluid

Title:

The pressure transmitter which used ferromagnetic fluid for restoration fluid

Document Type and Number:

Japanese Patent JP6027134

Kind Code:

B2

Abstract:

A pressure transmitter for measuring a pressure of a process fluid comprises a transmitter housing, a pressure sensor, a hydraulic relay system, a ferrofluid and transmitter electronics. The capacitance-based pressure sensor senses the pressure of the process fluid and is disposed within the housing. The hydraulic relay system comprises an isolation diaphragm positioned on an exterior of the transmitter housing, and an isolation tube extending from the pressure sensor to the isolation diaphragm. The ferrofluid is located in the isolation tube to transmit a change in the pressure of the process fluid at the isolation diaphragm to the sensor. The transmitter electronics are positioned within the housing and are configured to receive and condition a pressure signal from the pressure sensor.

More Like This:

JPH0835899	SEMICONDUCTOR PRESSURE SENSOR
JP4357876	Multivariate detection sensor and physical quantity identification method using it
WO/1999/047902	CAPACITIVE PRESSURE SENSOR

Inventors:

Hetki, robert, curl

Application Number:

JP2014545906A

Publication Date:

November 16, 2016

Filing Date:

November 07, 2012

Export Citation:

Click for automatic bibliography generation Help