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US 2013/0075254 A1Published application
Static Equilibrium Path for Measurements of Dynamic Flows
AssigneeSentient Technologies, Inc.
InventorFrederick Quincy Johnson
Life of this patent
Estimating the term…
Abstract
A meter is adapted for measuring concentrations of a chemical in a flowing solution. The meter has a barrier that shields a sensor from the high turbulence of the solution flow. One or more membranes can be employed to selectively filter out various ions or other chemicals.
Claims17
A device for measuring a concentration of an ion within a flowing solution, comprising:
- an ISFET having a gate;
- a barrier constructed about the gate that at least partially defines a pathway having (1) a relatively low turbulence portion with liquid access to the gate and (2) a relatively high turbulence portion with liquid access to the solution flow;
- and
- a processor that calculates the concentration of the ion as a function of electric activity across the gate.
1 more element
An ion meter, comprising:
- a substrate having a first side with an ISFET gate and a plurality of substrate bond pads;
- a reference electrode;
- and
- a circuit board having a plurality of circuit bond pads, wherein the plurality of substrate bond pads are soldered to the plurality of the circuit bond pads in a manner that prevents a solution exposed to the ISFET gate and the reference electrode from coming in electrical contact with any of the plurality of substrate bond pads and any of the plurality of circuit bond pads.
1 more element
Dependencies are inferred from the claim text.