초록 ▼

A flow controller including a unitary controller body with a chemically inert fluid conduit having an insertable constriction or orifice disposed within the conduit having a reduced cross-sectional area to thereby restrict the flow of fluid within the conduit allowing for reliable flow measurement.

A flow controller including a unitary controller body with a chemically inert fluid conduit having an insertable constriction or orifice disposed within the conduit having a reduced cross-sectional area to thereby restrict the flow of fluid within the conduit allowing for reliable flow measurement. An integrated circuit or controller may be coupled to the control valve and also coupled to the pressure sensors by a lead structure including signal conductors surrounded by a Faraday cage, and a chemically inert housing coupled to the unitary controller body enclosing the control valve and the pressure sensors.

대표청구항 ▼

What is claimed is: 1. A fluid handling device comprising:a body formed from chemically inert material and defining a flow passage therethrough;a processor with associated control logic;at least one sensor in fluid communication with the flow passage, wherein the sensor selectively delivers a signal

What is claimed is: 1. A fluid handling device comprising:a body formed from chemically inert material and defining a flow passage therethrough;a processor with associated control logic;at least one sensor in fluid communication with the flow passage, wherein the sensor selectively delivers a signal indicative of a condition of fluid in the flow passage;a housing substantially enclosing the processor and the at least one sensor; anda resiliently flexible lead structure folded within the housing and electrically communicatively coupling the processor and the at least one sensor to transmit the signal from the at least one sensor to the processor, the lead structure comprising:a trace layer presenting first and second opposing surfaces, the trace layer including at least one signal conductor disposed on the first opposing surface, and a shielding conductor disposed on the first opposing surface adjacent the at least one signal conductor and comprising a continuous strip of metallic material circumscribing the at least one signal conductor; anda first and a second shielding layer, each shielding layer comprising conductive material on an insulative polymer substrate, the first shielding layer confronting the first opposing surface of the trace layer and the second shielding layer confronting the second opposing surface of the trace layer, the first and second shielding layers being electrically coupled with the shielding conductor of the trace layer, wherein the first and second shielding layers and the shielding conductor of the trace layer define a Faraday cage surrounding the at least one signal conductor to isolate the at least one signal conductor from electromagnetic interference.