Tools, methods, and systems for evaluating a demulsifier performance from an emulsion mixture are described. The systems include a measuring instrument including a body with an open end, a cover attachable to the body, a sample holder sized to hold the emulsion mixture and to be received inside the body, the body and the cover define a sealable chamber; a sensor system positioned inside the sealable chamber an environmental control system positioned to enclose the sealable chamber; a data acquisition and processing system is in electronic communication with the sealable chamber, the sensor system, and the environmental control system. The sensor system includes a handle attached to and extruding from the cover of the measuring instrument; and a sensor loaded onto the handle, sized to be submerged inside the emulsion mixture of the sample holder, and operable to measure performance of the demulsifier.

A sensor for measuring multiple properties of a fluid, such as oil, including level, temperature, water contamination, and dielectric where the sensing elements include two or more interdigitated electrodes, a capacitive relative humidity sensor, and a temperature sensing element.

A method of directly measuring moisture content in an oil-filled transformer includes using an optical fiber that having a grating sensor, such as a Fiber Bragg grating, defined in the optical fiber. The various conductors (windings) in the transformer are insulated using an insulator such as paper and insulating oil is filled inside the transformer. Moisture in the transformer is absorbed by the paper that surrounds the windings. A moisture content at a specific location can be measured by placing the optical fiber with the grating sensor directly at the specific location to be measured. A physical parameter of the paper that absorbed moisture changes over time, causing a change in the grating sensor of the optical fiber which changes the spectral response of optical signals that are reflected by the grating sensor. The method provides an accurate method of measuring the moisture inside the transformer at the specific location.

The invention generally provides a system and method for detecting, measuring, and/or classifying particulate and/or water contaminants in a fluid supply line, storage tank, or sump. Embodiments of the invention provide a contaminant detection apparatus with a detection chamber and a detection module. The detection chamber includes a housing with an internal fluid conduit and one or more acoustic transducers disposed in the housing. Alarms and/or automatic signaling may be included to shut off valves or pumps when contaminants are detected.

A pump device has at least one chamber (22) or conduit containing or provided for containing a liquid, a concentration sensor (24) arranged in the chamber (22) or conduit for detecting a concentration of a substance in the liquid and an evaluation unit (28) connected to the sensor (24). The sensor (24) and the evaluation unit (28) are configured for an electrical impedance measurement. The evaluation unit (28) is configured such that a measurement for detecting the concentration is carried out by use of an electrical signal applied to the sensor (24) having at least one frequency corresponding to or above an upper cut-off frequency (f.sub.2) of a frequency range showing a constant electrical impedance (R.sub.m). A method is provided for determining the concentration of a substance inside a liquid.

Disclosed is a process and mass liquid flow (MLF) meter for measuring water cut, the MLF meter including a variable speed pump, a blind mixing T, a Coriolis meter, a differential pressure sensor, and a backpressure valve, and the process including maintaining a velocity of an emulsion through a Coriolis meter within a predetermined threshold from a predetermined velocity by controlling the variable speed pump, maintaining a pressure within the MLF meter to above a minimum pressure by controlling the backpressure valve, measuring a differential pressure across the Coriolis meter utilizing the differential pressure sensor, measuring a mass flow in the MLF meter utilizing the Coriolis meter, determining a viscosity based on the measured differential pressure and mass flow, and determining water cut of the emulsion based on the determined viscosity.

An Apparatus for determining and/or monitoring at least one process variable of a medium in a container, comprising: a mechanically oscillatable unit a driving/receiving unit for exciting the mechanically oscillatable unit to execute mechanical oscillations by means of an electrical, exciting signal and for receiving and transducing the mechanical oscillations into an electrical, received signal a control unit, which is embodied to produce the exciter signal starting from the received signal and to set a predeterminable phase shift between the exciter signal and the received signal, an electromagnetically oscillatable unit, an active element for producing and/or maintaining electromagnetic oscillations in the electromagnetically oscillatable unit, which active element forms together with the electromagnetically oscillatable unit an oscillator, a coupling unit, which is embodied to tap an output signal from the active element, and an evaluation unit, which evaluation unit is embodied to determine the at least one process variable from the received signal and/or from the output signal.

The invention is a system and method to measure oil content in water utilizing the fluorescence of oil emitted under excitation by laser. Oil and water mixture is transferred through the system to a measurement section in a microscope, which produces high resolution 3-dimensional images of the oil and water mixture with the fluorescence. The images are analyzed to calculate the amount of oil in water and oil droplets distribution. The image is also analyzed to distinguish oil coated solids from oil droplets, and to calculate the sizes and volumes of the solids.

A system and method for measuring fluids include a vessel containing at least two fluids with a drain pipe, a seal housing, a tool assembly, and a float assembly. The seal housing fits onto the drain pipe of existing vessels or tanks, and the tool assembly and float assembly are inserted through the seal housing to the vessel to measure the fluids inside the tank. The tool assembly has a shaft section and a flexible section. The flexible section extends into the vessel and through any bend in the drain pipe so that the system is compatible with retrofitting vessels with different drain pipe shapes. The float assembly can be released from the end of the bent drain pipe to float to the fluid boundary between different fluids in the vessel. The float assembly can also be retracted to safe position within the seal housing.

A system and method for determining whether a working fluid being used in a machine is near its failure point. The system includes an impedance/admittance sensor having a flow chamber through which the working fluid flows and a pair of spaced apart electrodes. A function generator generates frequency signals at certain frequencies over a range of frequencies and a sensor circuit receives the frequency signals and provides the frequency signals to the electrodes, where the conductance of the working fluid creates a measurement signal in the sensor circuit. A processor is responsive to the measurement signal and generates a relationship between the frequency signals and the measurement signal that is indicative of a contamination level of the working fluid.