Gas monitoring device and method
First Claim
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1. Apparatus for monitoring the concentration of at least one gas in a feed stream;
- comprising means defining an enclosed area wherein said gas is to be contained;
a piezoelectric device within said defined area having disposed on its surface a thin film formed from a manganese tertiary phosphine polymer complex;
said piezoelectric device being suitably connected to measurement means whereby changes in frequency in the piezoelectric device can be recorded.
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Abstract
Method and apparatus which can provide continuous monitoring of the partial pressure of one or more gases in an atmosphere or feed stream, over an indefinite period of time and at a minimal cost. The method and apparatus of the present invention operates by monitoring the change in frequency of a piezoelectric element which has been coated with a film formed from manganese tertiary phosphine polymer complex. As the polymer absorbs or releases gas the frequency of the piezoelectric device will be altered.
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25 Claims
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1. Apparatus for monitoring the concentration of at least one gas in a feed stream;
- comprising means defining an enclosed area wherein said gas is to be contained;
a piezoelectric device within said defined area having disposed on its surface a thin film formed from a manganese tertiary phosphine polymer complex;
said piezoelectric device being suitably connected to measurement means whereby changes in frequency in the piezoelectric device can be recorded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- comprising means defining an enclosed area wherein said gas is to be contained;
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13. A method of monitoring the partial pressure of at least one gas the steps which comprise;
- disposing a coating of a manganese tertiary phosphine polymer complex film on a piezolelectric crystal;
disposing said crystal in a defined enclosed area in which the gas is to be contained;
passing the gas through said area;
attaching said piezoelectric crystal to measurement means whereby changes in frequency of the piezoelectric device can be recorded. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- disposing a coating of a manganese tertiary phosphine polymer complex film on a piezolelectric crystal;
Specification