A measuring device with a measuring tube is disclosed. The measuring device includes a sensor unit for capturing a parameter of a medium, a control and evaluation unit, and a deflectable measuring sensor with a cavity and a base unit. The sensor unit is at least partially integrated in the wall of the measuring tube. The measuring sensor is connected to the base unit via a spring element. The base unit is arranged outside of the measuring tube. A side of the measuring sensor is in contact with the medium during operation. The cavity is arranged on the side of the measuring sensor facing the medium. The measuring sensor is integrated into the measuring tube wall in such a way that it can be deflected at least in the plane of the measuring tube wall. The sensor unit has a means for capturing the deflection of the measuring sensor.

A separation system including a control unit, a first pump connected to the control unit, and a first valve in fluid communication with the first pump and connected to the control unit. Also, a first density meter in fluid communication with the first valve and connected to the control unit. The system further includes a separator in fluid communication with the density meter and connected to the control unit and a tank in fluid communication with the separator. The system also includes a second pump in fluid communication with the tank and connected to the control unit, as well as a second density meter in fluid communication with the second pump and connected to the control unit and a second valve in fluid communication with the second density meter and connected to the control unit.

Apparatus and associated methods relate to suppressing electrical arcing within a fuel tank in which a fuel density sensor is located by isolating electronic components of the fuel density sensor within a cavity surrounded by a dielectric housing. The dielectric housing physically isolates the sensor electronics from fuel in the fuel tank via a fuel barrier. The dielectric housing electrically isolating the sensor electronics within the cavity from potential high voltage hazards outside the cavity. Light energy optically from a first environment outside the cavity is transmitted through the dielectric housing to a second environment within the cavity to provide operating power for the sensor electronics. The light energy is converted into DC electrical energy within the cavity. A light signal indicative of fuel density is optically transmitted from the second environment within the cavity through the dielectric housing to the first environment outside the cavity.

A measuring transducer includes a tube assembly including two pair of structurally identical tubes, each connected at their respective ends to each of two flow dividers, thereby forming four parallel flow paths, and each including alternating, adjoining straight and arcuate segments, wherein each of the first and third arcuate segments has a segment length corresponding to an extended length of a virtual center line of the segment, an arc radius corresponding to a radius of the virtual center line and a center point angle corresponding to a ratio between the segment length and the arc radius, such that each of the first arcuate segments are identical in both shape and size, and such that each of the third arcuate segments are identical in both shape and size, wherein the measuring transducer further includes an exciter assembly and a sensor assembly, each connected to the tube assembly.

A meter electronics (20) configured to clean a conduit in a vibratory meter (5) is provided. The meter electronics (20) includes an interface (201) configured to provide a drive signal to a meter assembly (10) communicatively coupled to the meter electronics (20) and receive one or more sensor signals from the meter assembly (10), and a processing system (202) communicatively coupled to the interface (201). The processing system (202) is configured to determine a parameter from the one or more received sensor signals. The processing system (202) is further configured to, based on the parameter, at least one of detect an unclean condition of the meter assembly (10) and enter into a cleaning mode, and detect a clean condition of the meter assembly (10) and enter into a non-cleaning mode.

An EMI resistant electronics enclosure (200) is provided having a first compartment (206) and a second compartment (207), each defined by a body (205), being separated by a septum (208). A first aperture (209) in the septum (208) connects the first compartment (206) and the second compartment (207). A feed-through element (210) is provided having a first interface region (211) and a second interface region (212), wherein one or more primary conductors (217) extend between the first interface region (211) and the second interface region (212), and wherein the first interface region (211) resides in the first compartment (206), and the second interface region (212) resides in the second compartment (207). A conductive bar (232) circumscribes at least a portion of the feed-through element (210), and a conductive gasket (220) extends from the body (205) to the conductive bar (232), wherein a ground path is formed between the body (205) and the conductive bar (232) with the conductive gasket (220).

A method is disclosed for determining flow measurement values of a Coriolis mass flowmeter in the presence of a two-phase flow of a two-phase medium having a gas phase and the subsequent presence of a single-phase flow of a single-phase medium not having a gas phase. The method includes: detecting a start time of a two-phase measurement interval at an onset of the two-phase flow; detecting an end time of the two-phase measurement interval at an end of the presence of the two-phase flow; determining and at least partially storing two-phase flow measurement values of the two-phase flow; determining at least one state variable of the single-phase medium; determining subsequently corrected two-phase flow measurement values as at least indirect input variables of a correction calculation; and outputting the corrected two-phase flow measurement values as individual values or as part of a cumulative flow measurement value.

A densitometer in the present disclosure comprises a piston attached to an end of a tube of the densitometer to reduce pressure dependence of density estimates of a sample fluid. The densitometer measures sample fluid density by vibrating the tube containing sample fluid and measuring the resonant frequency of the tube, then estimating the sample fluid density based on this resonant frequency. The piston is designed with a predetermined diameter that converts pressure inside the tube to tension in the tube. This tension produces an opposite effect on the resonant frequency of the tube to that caused by the fluid pressure itself and thereby reduces pressure dependence of the sample fluid density estimates.

A densitometer in the present disclosure comprises tension measuring devices that send tension measurements to a measurement module enabling the measurement module to estimate fluid density with increased accuracy. The densitometer measures sample fluid density by vibrating the sample fluid and measuring the resonant frequency of the sample fluid, then estimating the sample fluid density based on this resonant frequency. A set of tension measuring devices affixed to a tube of the densitometer measure external forces on the tube due to O-ring seals and other operational conditions. The sample fluid density estimate uses these tension measurements to take into account O-ring friction and other external forces applied to the densitometer to improve the accuracy of the calculated density.

A densitometer in the present disclosure comprises a measurement module that is calibrated to estimate sample fluid density with high accuracy and minimized sensitivity to temperature of tube and clamp components in the densitometer. The densitometer measures sample fluid density by vibrating the sample fluid and measuring the resonant frequency of the sample fluid, then estimating the sample fluid density based on this resonant frequency. The measurement module is calibrated specific to dissimilar tube and clamp materials. The tube and the clamp of the densitometer have materials are chosen to be cost-effective based on the specifications of the densitometer system and to have coefficients of thermal expansion (CTEs) which reduce temperature dependence of the resonant frequency of the sample fluid inside of the densitometer.