Apparatus for monitoring moisture in a gas stream

Details Apparatus for monitoring moisture in a gas stream Apparatus for monitoring moisture in a gas stream

1994-07-27

1995-12-26

Williams, Hezron E.

Measuring and testing

Gas analysis

By vibration

73 3106, 436 40, B01J 2900, G01N 3106

Patent

active

054777160

ABSTRACT:
A device is provided comprising a piezoelectric material and at least one non-crystalline non-crystalline metal oxide, crystalline-non-zeolite metal oxide and mixtures thereof coating chemically reactive with trace quantities of water in chemically reactive and inert gases. The piezoelectric material is bonded to a conductor for delivering an alternating electric current and to a conductor for transmitting resonant vibration frequency of the crystal. The reactive metal oxide coating has an effective thickness which provides a serviceable life for the coating while not being so thick as to prevent vibration of the piezoelectric material.

REFERENCES:
patent: 3164004 (1965-01-01), King, Jr.
patent: 4111036 (1978-09-01), Frechette et al.
patent: 5189902 (1993-03-01), Groeninger
patent: 5212988 (1993-05-01), White et al.
patent: 5339675 (1994-08-01), DiLeo et al.
patent: 5364797 (1994-11-01), Olsen et al.

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