Abstract: Embodiments of a Coriolis-force-based flow sensing device and embodiments of methods for manufacturing embodiments of the Coriolis-force-based flow sensing device, comprising the steps of: forming a driving electrode; forming, on the driving electrode, a first sacrificial region; forming, on the first sacrificial region, a first structural portion with a second sacrificial region buried therein; forming openings for selectively etching the second sacrificial region; forming, within the openings, a porous layer having pores; removing the second sacrificial region through the pores of the porous layer, forming a buried channel; growing, on the porous layer and not within the buried channel, a second structural portion that forms, with the first structural region, a structural body; selectively removing the first sacrificial region thus suspending the structural body on the driving electrode.

Abstract: The invention relates to a method for detection of a leak from a tank for liquid gas, said tank comprising a membrane surrounding the liquid gas, the membrane being surrounded by an insulation space which separates the membrane from a wall, the insulation space being filled an inert gas which is injected and extracted by at least one duct. The detection method comprises the following steps: determining 921 a first variation of mass of inert gas ?M1 between two moments by measuring the gas added and removed by the duct; calculating 922 a second variation of mass of inert gas ?M2 corresponding to a difference between two masses of inert gas measured in the insulation space; and comparing 931 the first variation with the second variation, and triggering an alarm if a difference E1 between the first variation and the second variation of mass of inert gas is greater than a first threshold S1.

Abstract: A measuring system for measuring a mass flow rate, a density, a temperature or a flow velocity. The measuring system includes a main line, a first Coriolis measuring device arranged in the main line, a second Coriolis measuring device arranged in series with the first Coriolis measuring device in the main line, a bypass line which bypasses the second Coriolis measuring device, a first valve arranged in the bypass line, and a computing unit which is connected to the first Coriolis measuring device and to the second Coriolis measuring device. The first valve opens depending on a pressure. The first Coriolis measuring device is designed for a higher maximum flow rate than the second Coriolis measuring device.

Abstract: An injection valve switches between a first state in which a sample loop is connected to a separation flow path through which a mobile phase from a liquid sender flows and a second state in which the sample loop is disconnected from the separation flow path. A pump speed determiner, in a case where a sample intake operation by a syringe pump is started immediately after the injection valve is switched from the second state to the first state, and a filling operation of filling the sample loop with the sample by the syringe pump is started after the intake operation is completed, determines an intake operation speed of the syringe pump that is required in order for the filling operation to complete immediately before the injection valve is switched from the second state to the first state next time using a set injection interval time. The syringe pump operates at the intake operation speed determined by the pump speed determiner while performing the intake operation.

Abstract: An apparatus and method for operating and calibrating a paint mixture delivery system includes a positive displacement fluid cylinder and a linear transducer that monitors operation of the positive displacement fluid cylinder. A controller is connected to a servo drive whose operation manipulates the performance of the positive displacement fluid cylinder. Operation of the fluid delivery system is controlled such that the ratio of paint or resin to catalyst or hardener can be accurately controlled and calibration of the discrete fluid flow sensors can be quickly and conveniently calibrated to assure delivery of the respective fluids are the desired mixture ratio.

Abstract: The invention relates to a method for state monitoring of a coil that is part of a device for determining at least one process variable of a medium in a containment. The method includes supplying the coil with an electrical excitation signal and receiving an electrical, received signal from the coil, ascertaining a first frequency for the excitation signal, in the case of which a first phase shift between the excitation signal and received signal is less than a predeterminable limit value, and ascertaining a state indicator for the coil based on the first frequency. Further disclosed is a device embodied for performing a method of the invention.

Abstract: A micromechanical sensor unit, including: a substrate and an edge layer, which is situated on the substrate and laterally frames an inner area above the substrate; at least one diaphragm, which spans the inner area and forms a covered cavity above the substrate; at least one support point, which is situated between the substrate and the diaphragm inside the cavity and attaches the diaphragm to the edge layer and/or to the at least one support point. The support point separates the diaphragm into at least one measuring area that is movable through force action and at least one reference area that is not movable through force action. The substrate and the diaphragm, inside the cavity, include electrodes, which face one another in the measuring area and the reference area.

Abstract: In a grain sampling and imaging device, a grain bin (1) is located under a sampling body (5), a grain feed connector (4) is fixed to a top of the sampling body (5), an observation window (2) is installed on the sampling body (5), a camera (3) is installed above the observation window (2); grains fall to a grain feed connector (4), and then into the sampling body (5), and then are sieved by multiple passages of the sampling body (5), a part of the grains randomly enter the observation window (2) and photographed by the camera (3), and finally all of the grains enter the grain bin (1) through a discharge outlet (5.1) provided at a bottom of the sampling body (5).

Abstract: A correction method for a gyro sensor which measures angular velocity of a vehicle about an axis in a vertical direction includes a generation process of performing a process on a difference between a measured azimuth obtained by performing a process on an sensor output, which is an output from the gyro sensor, and a vehicle azimuth estimated by using markers arranged along a traveling road of the vehicle to obtain correction information and a correction process of correcting the measured azimuth obtained by performing the process on the sensor output, which is the output from the gyro sensor, by using the correction information.

Abstract: A fluid sensing system includes a target positioned at a target level, a first transducer configured to generate a first sound wave, and a second transducer configured to generate a second sound wave. An electronic processor is configured to produce a first signal to drive the first transducer and receive a first indication of a detected first echo from the first transducer. The electronic processor is configured to determine a first level of the fluid and determine whether the first level is less than or equal to the target level. The electronic processor is configured to produce, in response to determining the first level is less than or equal to the target level, a second signal to drive the second transducer, receive a second indication of a detected second echo from the second transducer, and determine a second level of the fluid based on the second indication.

Abstract: In a sample injection device (100), a controller (23) is configured or programmed to control a syringe drive (21) such that in a penetration operation in which a syringe (10) is moved to a side of a sample introduction portion (910) and a needle (11) penetrates a lid member (911), a moving speed at a time when a tip (11b) of the needle contacts the lid member is a second moving speed that is low.

Abstract: A method of converting a directly measured mass flow rate to account for buoyancy is provided. The method includes directly measuring a mass flow rate of a material, measuring a density of the material, and using the measured density of the material to convert the directly measured mass flow rate into a mass value including a buoyancy of a fluid.

Abstract: A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.

Abstract: A sensor device includes a sensor element, a substrate, and a bonding wire. Over the substrate, provided is the sensor element. The bonding wire forms at least part of a connection path that electrically connects the sensor element and the substrate together. The bonding wire is provided to connect two connection surfaces that intersect with each other.

Abstract: Systems and methods related to gyroscope related applications. A platform having at least one torus shaped channel that is filled with a liquid is used in conjunction with at least one marker to determine the direction of forces applied to the platform. Each marker is neutrally buoyant within the liquid and a marker tracking system is used to determine the displacement of the marker from its resting place after a force has been applied to the platform. The tracking system may be based on at least one digital camera in conjunction with suitable image processing software to determine the marker's position before, during, and after the force has been applied. A gyroscope can be constructed using three such platforms with each platform being orthogonal to the other two. Each platform may have multiple concentric channels with a common center with each channel having a different sensitivity to the applied forces.

Abstract: A comprehensive three-dimensional exploitation experimental system for large-scale and full-sized exploitation wells includes a reactor, configured to prepare a natural gas hydrate sample, for simulating an environment for forming a natural gas hydrate reservoir in seafloor sediments. The reactor includes a reactor body, an upper cover disposed at an upper surface of the reactor body, and a lower cover disposed at a lower surface of the reactor body; a gas introducing module, configured to introduce gas to the reactor during hydrate formation; a liquid introducing module, configured to introduce liquid to the reactor during hydrate formation; a temperature regulating module, configured to regulate a temperature in the reactor; a data collecting-processing-displaying module, configured to collect, store, process and display data of the comprehensive three-dimensional exploitation experimental system during an experiment.

Abstract: Systems and methods for calibrating a gas pycnometer utilizing a custom volume reference standard are disclosed. The custom volume reference standard may include a material. The material may include a low CTE and high-accuracy dimensions. The material may have a high-aspect ratio reference shape corresponding to an inner area of a custom made sample cup. The custom volume reference standard may include a specified number of inclusions of the material, a high purity, and/or an accurately known density. The custom volume reference standard may include a known volume.

Abstract: An air gap of a rotation speed sensor is increased. A rotation speed sensor according to one embodiment includes: a sensor component having magnetic sensing elements; and a magnetic plate that is arranged between the sensor component and a magnet and that is made of a magnetic material. In a first direction that is a direction in which the sensor component, the magnetic plate and the magnet are arranged, the magnetic plate includes an opening that is formed at a position overlapping center of a line connecting respective centers of the magnetic sensing elements.

Abstract: An intake arrangement (1) for a roller mill which includes a storage container (2), a force transducer (6) arranged on the storage container (2), a level sensor (7) arranged on the storage container (2) for determining when a ground material level (B) is reached in the storage container (2), and a control unit (8). The control unit (8) is designed to determine a first fill level (A) of the storage container (2), from a weight force (EG) determined by the force transducer (6), and to determine a characteristic fill level curve (K), based on the determined first fill level (A) and the fill level (B) determined by the level sensor (7).

Abstract: It is provided a sensor device comprising: a proximity sensor (10); a processor (11); a wireless communication module (13); and a memory (14). When the sensor device is in a first functional state (20, 20a, 20b) and the proximity sensor detects a predetermined change in its proximity, the sensor device is configured to transition from the first functional state, in which wireless communication is inactivated, to a second functional state (21), in which wireless communication module is enabled. The predetermined change in its proximity is a removal of transport protection, comprising removal of a metallic tape over the proximity sensor, whereby the proximity sensor is capable to detect the removal of the metallic tape based on inductive sensing.