Georg Fischer Signet LLC

Steven Wells

Gert Burkhardt

Anthony Thai

A flow cell assembly for fluid sensors is provided. The assembly includes a housing configured to couple to an external source of fluid for measurement. The assembly further includes a flow regulator and a flow meter disposed within the housing to facilitate controlled fluid. The housing defines one or more measuring chambers each configured to receive a fluid sensor. Each measuring chamber includes an inlet aperture and a gravity overflow spaced apart from the inlet aperture. Each measuring chamber is configured to receive a fluid sensor such that a sensing end of the fluid sensor is disposed proximate to an inlet aperture of the measuring chamber, thereby ensuring controlled fluid pressure proximate to the sensing end.

Flow cell assembly for fluid sensors

An electrochemical sensor is provided that includes a housing having an outer wall, an axial bore circumscribed by the outer wall, and a barrier wall that aids in defining a reference cavity. The housing further including a plurality of cross members in spaced relation to one another disposed between the axial bore and the outer wall, each cross member defining an aperture. A junction plug is disposed at the distal end of the housing. The junction plug comprises a porous material that enables ionic flow through the junction plug. The sensor enables ionic communication between the target fluid and the reference electrode within the reference cavity through the apertures of the plurality of cross members. In this manner, the sensor provides generally a long, tortuous flow path, or salt bridge, between the target fluid and the reference electrode, resulting in a high resistance factor for the sensor.

Electrochemical sensor

An electrochemical sensor is provided that includes a housing having an outer wall, a plurality of longitudinal chambers disposed within the outer wall, and a reference chamber housing a reference electrode. Ionic communication between the target fluid and the reference electrode must pass sequentially through each of longitudinal chambers from a first longitudinal chamber to the reference chamber. In this manner, the sensor provides generally a long, tortuous flow path, or salt bridge, between the target fluid and the reference electrode, resulting in a high resistance factor for the sensor.

Electrochemical sensor and method of manufacture

An electrochemical sensor is provided that includes a housing defining a cavity for a reference electrolyte and defining an opening to the cavity configured to be proximate to a target fluid. The sensor further includes a junction plug comprising a porous material and a cross member impermeable to a target fluid positioned between the junction plug and the cavity. The cross member includes a planar portion disposed against the junction plug that defines an aperture to enable electrochemical communication between the target fluid and the reference electrolyte.

An electrochemical sensor is provided that includes a housing having an outer wall, a plurality of longitudinal walls disposed within the outer wall, and a reference chamber housing a reference electrode. The longitudinal walls define a plurality of longitudinal chambers. Ionic communication between the target fluid and the reference electrode passes sequentially through each of longitudinal chambers from a first longitudinal chamber to the reference chamber. In this manner, the sensor provides generally a long, tortuous flow path, or salt bridge, between the target fluid and the reference electrode, resulting in a high resistance factor for the sensor.

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Huntington Beach, CA, United States of America

Steven Wells