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US 4,227,398 AGranted
Piezoelectric gum measurement device
AssigneeExxon Research & Engineering Co.
InventorsMary H. Keirns, Robert S. Lunt, III
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Abstract
An improved apparatus for measuring high-boiling components and particularly existent gum levels in aviation fuel comprising: a piezoelectric crystal, a lipophobic coating applied to the crystal for controlling sample location, a supply device for applying a sample to the crystal, a heater for heating the sample on the crystal, an evacuator, an oscillator associated with the crystal for measuring the resonant frequency thereof and an insulated housing for the crystal and heater.
Claims10
An apparatus for measuring high boiling point components and gum present in a liquid stream comprising:
- (a) piezoelectric crystal means;
- (b) a lipophobic coating applied to said crystal means for controlling sample location;
- (c) means for applying a sample to said crystal;
- (d) heater means for heating sample on said crystal;
- (e) oscillator means associated with said crystal for measuring the resonant frequency thereof;
- (f) evacuator means;
- and
- (g) insulated housing means for said crystal and heater.
5 more elements
Dependencies are inferred from the claim text.