Flow cell humidity sensor system

Details Flow cell humidity sensor system Flow cell humidity sensor system

2005-01-04

2005-01-04

Le, N. (Department: 2858)

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

C436S518000

Reexamination Certificate

active

06838888

ABSTRACT:
A system for monitoring water concentration in gaseous sample is disclosed. It is readily applicable in the synthesis of biopolymer arrays/microarrays involving the use of water-sensitive reagents. A flow cell is provided in which a capacitance sensor is placed separate from a production or synthesis environment. Sample and dry gas may be provided to the flow cell via conduits and valves or a manifold system. Dry gas, such as N2, is used to dry the sensor or simply to maintain it in a dried condition. The same gas may be used to drive an optional venturi pump to draw sample for measurement into the cell from the synthesis environment.

REFERENCES:
patent: 6119506 (2000-09-01), Gibson et al.
patent: 6242266 (2001-06-01), Schleifer et al.
patent: 6413783 (2002-07-01), Wohlstadter et al.
patent: 20030008413 (2003-01-01), Kim et al.
Dewcon Instruments, “Comparison of Moisture Sensors”, 1997, vol. 1, p. 2, paragraph 7.

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