Chemically inert flow control with non-contaminating body

A chemically inert fluid control module adapted to be connected within a fluid flow circuit, said module comprising:

• a chemically inert housing having a fluid conduit extending through said housing, said conduit having a constriction disposed within said conduit, said constriction having a reduced cross-sectional area thereby restricting flow within the conduit;
• means for sensing a pressure within the fluid conduit, wherein a portion of the means for sensing exposed to fluid is chemically inert;
• and
• means for controlling a size of an opening in a valve positioned within said fluid flow conduit, the valve being controllable to set a selected fluid pressure, fluid flow rate, or fluid volume as desired responsive to pressure sensed by the means for sensing, wherein a portion of the means for controlling exposed to fluid is chemically inert,
• said means for sensing and said means for controlling being contained integrally within said housing, wherein the chemically inert material of the housing, pressure sensing means and controlling means includes a non-contaminating polymer.

A chemically inert fluid control module adapted to be connected with a fluid flow circuit, said module comprising:

• a chemically inert housing having a fluid conduit extending through said housing;
• a control valve coupled to the conduit, the control valve being controllable to set a selected fluid pressure, fluid flow rate, or fluid volume as desired responsive to a sensed pressure in the fluid conduit, wherein a portion of the valve exposed to fluid is chemically inert;
• a first pressure sensor coupled to the conduit and to the control valve, wherein a portion of the first pressure sensor exposed to fluid is chemically inert;
• a second pressure sensor coupled to the conduit and to the control valve, wherein a portion of the second pressure sensor exposed to fluid is chemically inert;
• and
• a constriction disposed within said conduit between said first and second pressure sensors, said constriction having a reduced cross-sectional area thereby restricting flow within the conduit, the first and second pressure sensors sensing pressures in the conduit on respective sides of the constriction, wherein the chemically inert material of the housing, conduit control valve, first and second pressure sensor and constriction includes a non-contaminating polymer.

A chemically inert fluid control module adapted to be connected with a fluid flow circuit, the fluid flow conduit conveying a process fluid, said module comprising:

• a chemically inert fluid conduit;
• an adjustable control valve coupled to the conduit, wherein a portion of the control valve that is exposed to process fluid is chemically inert;
• at least a first pressure sensor coupled to the conduit, wherein a portion of the first pressure sensor that is exposed to process fluid is chemically inert;
• a constriction disposed within said conduit, said constriction having a reduced cross-sectional area thereby restricting flow of fluid within the conduit;
• and
• a chemically inert housing enclosing said control valve and said first pressure sensor;
• wherein the control valve is controllable to set a selected fluid pressure, fluid flow rate, or fluid volume as desired responsive to pressure sensed by the first pressure sensor.

A chemically inert fluid control module adapted to be connected with a fluid flow circuit, the fluid flow conduit conveying a process fluid, said module comprising:

• a chemically inert fluid conduit;
• an adjustable control valve coupled to the conduit, wherein a portion of the control valve that is exposed to process fluid is chemically inert;
• at least a first sensor coupled to the conduit, wherein a portion of the first sensor that is exposed to process fluid is chemically inert;
• and
• a chemically inert housing enclosing said control valve and said first sensor, wherein the chemically inert material of the conduit, control valve, first sensor and housing includes a non-contaminating polymer.