Measuring and testing – Fluid pressure gauge – With protective separator
Patent
1994-08-22
1996-12-10
Chilcot, Richard
Measuring and testing
Fluid pressure gauge
With protective separator
73717, 73716, G01L 702, G01L 1302
Patent
active
055832946
ABSTRACT:
A pressure transmitter apparatus having a Unitary body portion, separate diaphragms and flange elements and disposed within the body, a first and second normally vertical pressure passage. The first and second pressure passageways communicate respectively between first and second pressure openings extending-normally horizontally through the body portion, and a transducer mounting element. The mounting element, coupled to the body portion and located above the pressure passageways, mounts a transducer that generates a differential pressure signal. One or a pair of diaphragm elements are configured to form first and second process diaphragms, closing first and second pressure openings. The flange element overlies the diaphragm element and is removably and replaceably secured to the body portion. The pressure transmitter also includes a flame retardation element that is disposed within at least one of the pressure passageways, and an overrange protection element, integrally arranged with the unitary body portion, that protects the transducer from overrange pressure fluctuations. Special flange plane geometries optimize size and sensitivity of isolation diaphragms.
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Chilcot Richard
Felber Joseph L.
The Foxboro Company
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