A method for operating a system configured to consume a fluid, such as engine fuel, having at least two flowmeters is provided. The method includes the step of recirculating a fluid in a closed loop having a supply-side flowmeter and return-side flowmeter, such that substantially no fluid is consumed. Fluid flow is measured in the supply-side flowmeter and the return-side flowmeter. Fluid flow measurements are compared between the supply-side flowmeter and return-side flowmeter, and a first differential zero value based on the difference in the fluid flow measurements between the supply-side flowmeter and return-side flowmeter is determined. A first temperature sensor signal value is received and is associated with the first differential zero value. The first differential zero value associated with the first temperature sensor signal value is stored in a meter electronics.

A flowmeter and a manifold for the same are provided according to an embodiment. The manifold comprises a body defining a first face and an opposing second face. A first orifice that projects into the body from the first face is defined by the body, and a second orifice that is also defined by the body projects into the body from the second face. The first and second orifices meet to define a fluid passage traversing through the body, and the second orifice is configured to fluidly connect to at least one flow tube of the flowmeter. At least one boss projects from the second face.

transducer apparatus comprises a transducer housing, a tube, a temperature sensor as well as a temperature sensor. The tube is arranged within a cavity of the transducer housing, in such a manner that an intermediate space is formed between a wall of the transducer housing facing the cavity inner surface and an outer surface of a wall of the tube facing the cavity. Furthermore, the tube is adapted to guide a fluid in its lumen, in such a manner that an inner surface of the wall of the tube facing the lumen is contacted by fluid guided in the lumen. Each of the temperature sensors is formed by means of a temperature detector arranged within the intermediate space as well as by means of a coupling body coupling the respective temperature detector thermally conductively with the wall of the tube and is additionally adapted to register a particular measurement location temperature, and to transduce such into a corresponding temperature measurement signal, namely an electrical measurement signal representing the particular measurement location temperature.

Data relating to fluid dynamics is obtained using a flow field sensor that measures acceleration and angular velocity of the sensor on three axes. Ballast control allows the sensor to obtain neutral buoyancy within the fluid. The sensor is effective in opaque fluids and closed containers as data is stored in a removable memory. Froth flotation systems are among the applications for the sensor. The small size, the geometry, and the center of mass of the sensor allow it to follow the flow field in a vessel without material disruption of the flow field or weight-induced angular displacement.

A method, system, and apparatus for measuring mass flow comprises two tubes for transporting a material; two exciters wherein one of the two exciters is fixedly attached on each of the two tubes configured to induce a vibration in the two tubes; at least two sensors on each of the tubes; a test media flowing through the tube, wherein a phase difference in the tubes is indicative of a mass flow of the test media; and a comparer module operably connected to the at least two sensors on each of the tubes for determining a phase difference of the vibrations in the tubes and determining a mass flow according to the phase difference.

A sensor system (30) including a sensor assembly (10) for a fluid meter (5) is provided. The sensor assembly (10) includes one or more fluid conduits (103A, 103B). The sensor assembly (10) also includes a case (101) surrounding at least a portion of the one or more fluid conduits (103A, 103B). The sensor system (30) also includes a case support (300). The case support (300) surrounds at least a portion of the case (101). The case support (300) includes one or more ribs (330) that extend along at least a portion of the case (101) and contact the case (101) at least when the case (101) deforms outward by a threshold amount.

A flameproof feed-through (200) includes a feed-through element (210) comprising a substantially planar shape, a first interface region (211), and a second interface region (212), wherein one or more conductors (217) extend between the first interface region (211) and the second interface region (212). The flameproof feed-through (200) further includes one or more body portions (220) assembled to the feed-through element (210), with the one or more body portions (220) holding the feed-through element (210) in position with respect to the aperture. The first interface region (211) of the feed-through element (210) extends at least partially to a first side (201) of the flameproof feed-through (200) and wherein the second interface region (212) of the feed-through element (210) extends at least partially to a second side (202) of the flameproof feed-through (200).

A first terminal connector (300) comprises a component member (302) comprising a component member surface (322) with a first terminal post (306) oriented substantially perpendicular to the component member surface (322), and a cap member (304) comprising a cap member surface (324) and a first borehole (310) oriented substantially perpendicular from the cap member surface (324), the first borehole (310) including a bevel volume (328) configured to compress a plurality of windings from one or more wires (332, 334a, 334b) wound around the first terminal post (306) together between the component member surface (322) and the bevel volume (328) when the first terminal post (306) is inserted into the first borehole (310). A second terminal connector (500) comprises a component member (502) comprising a component member surface (522), and a cap member (504) comprising a cap member surface (524), wherein a first groove (550) is positioned on one of the component member surface (522) or the cap member surface (524), a first tongue (556) protruding from the other of the cap member surface (524) or the component member surface (522), and the first tongue (556) including a bevel volume (528) along a ridge of the first tongue (556) configured to compress one or more wires between the first groove (550) and the bevel volume (528) of the first tongue (556) when the first tongue (556) is inserted into the first groove (550).

A measuring tube system for a measuring device comprises at least one measuring tube for conducting a flowable medium, wherein the measuring tubes each have two end regions, a first block with at least one first channel passing through the first block, wherein the measuring tubes, in a first end region, are each at least partially conducted through the corresponding first channels and are fixed in the corresponding first channels, a second block with at least one of second channel passing through the second block, wherein the first block and the second block are arranged such that the first channels and the second channels correspondingly adjoin one another and the first block and the second block are connected in a fluid-tight manner. Also disclosed is a measuring device comprising the measuring tube system, and a production method for the measuring tube system.

A flow sensor includes a flow tube in a form of a tube and a support cast around the flow tube. The support clamps the flow tube and the flow tube extends through the support. The flow sensor is formed by placing the flow tube in a tube cavity of a casting mold and pouring or injecting a liquid resin into a support cavity of the casting mold. The support is formed around the flow tube from solidifying the liquid resin in the support cavity of the casting mold. A temperature of the casting mold during formation of the support does not exceed a threshold temperature to avoid deformation of the flow tube. The flow sensor can also include at least one memory chip that stores calibration information associated with the flow sensor and connectors that allows a controller to read the calibration information from the memory chip.