Coulter Corporation

Other

Richard A Wenman

Jon J Fong

Method and device for monitoring an insulating or conducting test fluid for acidity, basicity, contaminants and/or specific chemicals by monitoring the rate of modification, for example corrosion, dissolution or erosion of at least one plate of a capacitive sensor immersed in the fluid. The sensor's dielectric element is inorganic or piezoelectrically active ceramic. Capacitor plates can be different materials, foil or coated/deposited metals modified by the test fluid. Capacitance is measured over time, its change due to modification of sensor plate area is recorded and used to determine quantity of acid, alkali, contaminants and/or chemicals in the test fluid. Piezoceramic dielectric allows the detector to be vibrated. The sensor can be attached to an ultrasonic transducer. Presence of specific chemicals requires a chemically non-reactive and a chemically reactive electrode re the chemical of interest. If the test fluid is conductive, the changed capacitance is measured in an insulating fluid.

Method and device for measuring the acidity or basicity of insulating fluids, particularly mineral and synthetic oils

A wickless temperature controlling apparatus and method to analyze the characteristics of an adsorbent is provided. The apparatus provides a heat transfer between a cooling liquid and a sample vessel immersed in the cooling liquid and further provides a stabilized temperature to the sample vessel. The apparatus further comprises a thermal bridge between a saturation vapor pressure thermometer, which is also immersed in the cooling liquid, and the sample vessel to provide a uniform temperature between the thermometer and the vessel. The method to analyze the adsorbent utilizes the apparatus. In addition, the method includes a novel method of dosing an adsorptive gas to an adsorbent.

Wickless temperature controlling apparatus and method for use with pore

A method of analyzing the characteristics of an adsorbent is provided. The method uses a sample chamber of known volume and known temperature with an adsorbent to be analyzed. An adsorptive gas which comprises at least 80 percent of a component gas and less than 20 percent of a carrier gas, at a temperature higher than its boiling point at environmental atmospheric pressure is introduced into the sample chamber. The pressure of the adsorptive gas is measured. The quantity of the adsorptive gas adsorbed by the adsorbent, at the measured pressure is determined. And, a relative pressure in the sample chamber and the quantity of the adsorptive gas adsorbed by the adsorbent at the relative pressure is correlated.

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Coral Springs, FL, United States of America

Richard A Wenman