Abstract: A magnetic flowmeter has a conduit, an electrical coil, and a coil driver configured to energize the electrical coil with a periodic electrical signal and generate a magnetic field in the conduit that periodically reverses polarity. Electrodes are arranged to detect a voltage generated by flow of the conductive fluid through the conduit and through the magnetic field. A measurement system receives electrical signals from the electrodes and determines a flow rate of the conductive fluid using the electrical signals. The flowmeter has a meter verification system that includes a sensor configured to detect the magnetic field generated by electrical coil when it is energized by the coil driver. The meter verification system is configured to determine an amplitude of the periodically changing magnetic field and to use this amplitude to assess the current operational effectiveness of the magnetic flowmeter.

Abstract: A method of producing a magnetic-inductive flow meter with at least one measurement tube, a magnetic field generating apparatus for generating a magnetic field which runs at least also perpendicular to the longitudinal axis of the measurement tube, and two measurement electrodes, the measurement tube having a metallic base body provided with a thermoplastic cover layer, a virtual connecting line of the two measurement electrodes running perpendicular to the direction of the magnetic field which is permeating the measurement tube perpendicular to the longitudinal axis of the measurement tube. The penetration sites of the measurement tube at which the measurement electrodes penetrate the measurement tube are easily made liquid-tight by a liquid-tight connection which has been produced by heating of the cover layer at the penetration sites for sealing the thermoplastic cover layer of the measurement tube to the measurement electrodes.

Abstract: A method for testing of a measuring device arrangement (1), the measuring device arrangement (1) comprising a measuring device (2) which, based on the determination of a measured quantity, generates an output signal which can be tapped from a pick-off site (3) as a pick-off signal. A method for monitoring a measuring device arrangement is devised that constitutes an inline test that does not interrupt the measurement or the transfer of the measured values is achieved in that an action is applied to the measuring device (2) such that the measuring device (2) generates a test signal as the output signal, and that the output signal and/or a signal which is dependent on it is influenced such that the pick-off signal is a definable setting signal.

Abstract: A magnetic-inductive flowmeter with a nonconductive measuring tube, a magnetic field generating apparatus, two measuring electrodes conductively coupled to the medium for tapping a measuring-circuit voltage induced in the flowing medium, and with a measuring device for detecting an empty tube. Detection of an empty tube is obtained by the measuring device being an admittance measuring device having a detector, a counter-electrode, an ac signal source and an evaluation unit, the detector having an electrode connected to the ac signal source so that the electrode is exposed to an ac signal in the range of roughly 50 MHz-200 MHz and then an electrical field extends from the electrode into the medium. The electrode of the detector and the counter-electrode planiform shaped and are located essentially opposite one another on the outer surface of the measuring tube above and underneath the longitudinal axis of the measuring tube, respectively.

Abstract: The present invention relates to a method for inhibiting in a non-aqueous, non-conductive liquid. The present method also relates to a corrosion inhibitor that can be employed in such a liquid. The method can include measuring or detecting the present corrosion inhibitor with a magnetic flow meter.

Abstract: A passage detection apparatus is configured to detect the change in the properties (propagation state of sound wave, dielectric constant, etc.) of a specific space, which changes according to the passage of an object in the specific space and the size of the object. The passage detection apparatus includes a pair of detection units and configured to transmit and receive signals to and from an external device. The specific space is formed by the space between the detection unit and the detection unit. The detection unit is supported by a first substrate. The detection unit is supported by a second substrate that is parallel to the first substrate, and arranged at the position corresponding to the detection unit supported by the first substrate.

Abstract: A method for predictive maintenance for a magneto-inductive flow-measuring device and/or to a method for determining electrical conductivity of a medium flowing through a magneto-inductive flow-measuring device, wherein the magneto-inductive flow-measuring device includes a magnet system, which produces a magnetic field passing through the measuring tube essentially transversely to a measuring tube axis; at least two measuring electrodes coupled with the medium, having a defined rest potential and being arranged in a region of the measuring tube lying essentially perpendicularly to the magnetic field; and a control/evaluation unit, which delivers information concerning volume- or mass-flow of the medium on the basis of measurement voltage induced in the measuring electrodes.

Abstract: A passage detection apparatus is configured to detect the change in the properties (propagation state of sound wave, dielectric constant, etc.) of a specific space, which changes according to the passage of an object in the specific space and the size of the object. The passage detection apparatus includes a pair of detection units configured to transmit and receive signals to and from an external device. The specific space is formed by the space between the first detection unit and the second detection unit. The first detection unit is supported by a first substrate. The second detection unit is supported by a second substrate that is parallel to the first substrate, and arranged at the position corresponding to the first detection unit supported by the first substrate.

Abstract: The present invention discloses a flow measurement device that includes: a wave guide tube type resonant cavity; a penetrating space that penetrates the resonant cavity; a duct support part that is made of a dielectric substance and is in the resonant cavity and surrounds an outside of the penetrating space; a transmitting antenna that transmits a microwave in a direction along a longitudinal axial direction of the resonant cavity to provide a standing wave or a traveling wave of the microwave, with the microwave transmitted in a space that is outside of duct support part and inside of the resonant cavity; and a receiving antenna that receives the standing wave or the traveling wave.

Abstract: Actuation for control of surfaces is provided through use of a conducting material comprising electrolyte particles electrically charged with electromagnetic fields in boundary layers. Interactions of the electrically charged particles with electromagnetic fields in boundary layers are coordinated for generation of control forces for various applications.

Abstract: The process measuring device includes a flow sensor having a measuring tube, a sensor arrangement for producing a measurement signal, and an evaluation and operating circuit. The method serves to compensate for the effects of interfering potentials which are caused especially by foreign particles or air bubbles in the liquid to be measured. For this purpose, an anomaly in the waveform of the measurement signal caused at least in part by an electrical, especially pulse-shaped, interfering potential is detected by determining within a stored first data set a data group which digitally represents the anomaly. To generate an interference-free data set, the data belonging to the data group are removed from the stored first data set.

Abstract: The flow sensor serves to measure an electrically conductive fluid flowing in a pipe. It comprises a flow tube designed to be inserted into the pipe for conducting the fluid, the flow tube being electrically nonconductive at least on a fluid-contacting inner side, an electrode arrangement consisting of at least two measuring electrodes disposed on the flow tube for picking up a voltage induced in the fluid, and a magnetic field system likewise disposed on the flow tube. The magnetic field system comprises at least two saddle-shaped field coils for producing a magnetic field cutting the fluid during operation of the flow sensor, a respective ferromagnetic pole piece for each of the two field coils, as well as at least one ferromagnetic return path extending around the flow tube upstream of the two field coils and at least one ferromagnetic return path extending around the flow tube downstream of the two field coils for directing the magnetic field around the flow tube.

Abstract: A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose and includes a dispensing valve. A drain line bypasses the dispensing valve and features a check valve so that LNG trapped in the hose after dispensing is returned to the sump due to pressurization by ambient heat. A capacitance probe is submerged in the LNG in the sump and provides a dielectric that is compared by a microprocessor with the dielectric for pure methane at the same temperature to determine the purity of the LNG. An approximate linear relation between density and dielectric may be used to determine density and mass flow for the LNG from the measured dielectric.

Abstract: A process for curing a natural or synthetic rubber includes the measuring of curing conditions by dielectric or impedance means to produce a process curve (impedance property data versus time) followed by analyzing the process curve with a software algorithm which defines and statistically quantifies the correlation between the process curve and the desired part properties. The correlation relationship is applied in real time to end the curing process at the optimum time and to produce rubber parts of uniform quality and with reduced process cycle time.

Abstract: A system for dispensing cryogenic liquid to a use device includes a bulk storage tank providing LNG to a sump containing a meter submerged in LNG. A temperature probe is also submerged in the LNG. A dispensing line is positioned between the meter and dispensing hose and includes a dispensing valve. A drain line bypasses the dispensing valve and features a check valve so that LNG trapped in the hose after dispensing is returned to the sump due to pressurization by ambient heat. A capacitance probe is submerged in the LNG in the sump and provides a dielectric that is compared by a microprocessor with the dielectric for pure methane at the same temperature to determine the purity of the LNG. An approximate linear relation between density and dielectric may be used to determine density and mass flow for the LNG from the measured dielectric.