초록 ▼

A non-contaminating pressure sensor module having an isolation member is disclosed. The isolation member isolates a pressure sensor within the transducer module from exposure to fluids flowing through a conduit in the module. The transducer module may be positioned in-line within a fluid flow circui

A non-contaminating pressure sensor module having an isolation member is disclosed. The isolation member isolates a pressure sensor within the transducer module from exposure to fluids flowing through a conduit in the module. The transducer module may be positioned in-line within a fluid flow circuit carrying corrosive materials, wherein the pressure transducer module produces a control signal proportional to either a gauge pressure or an absolute pressure of the fluid flow circuit. The pressure transducer module of the present invention also avoids the introduction of particulate, unwanted ions, or vapors into the flow circuit.

대표청구항 ▼

A chemically inert pressure transducer module adapted to be connected in-line with a fluid flow circuit, comprising: (a) a housing having a bore extending through said housing thereby forming a conduit, wherein an inlet end and an outlet end of the conduit are connected in-line to the fluid flow cir

A chemically inert pressure transducer module adapted to be connected in-line with a fluid flow circuit, comprising: (a) a housing having a bore extending through said housing thereby forming a conduit, wherein an inlet end and an outlet end of the conduit are connected in-line to the fluid flow circuit, said housing further having a cavity formed within said housing extending from an outer surface of said housing into the bore of said housing; (b) a chemically inert flexible membrane contained within the cavity, proximate the bore of said housing, wherein said membrane includes a plurality of channels formed on an upper surface of said membrane, said channels extending from a first position along an edge of said membrane to a second spaced apart position along said edge of said membrane; (c) an alumina ceramic diaphragm sensor contained within said cavity disposed with the diaphragm adjacent to and in contact with said flexible membrane; (d) means for constraining the membrane and the alumina ceramic diaphragm sensor in a fixed position within the cavity of the housing, the diaphragm sensor being isolated from a fluid flowing in the fluid flow circuit; and (e) an electronic circuit contained within the cavity of the housing and operatively coupled to the alumina ceramic diaphragm sensor, whereby the electronic circuit produces a control signal proportioned to the pressure within the bore.