Abstract: This sensor (1), for a fluid and suitable for use in a pipeline at least temporarily containing the fluid flowing therethrough, has at least one curved measuring tube (4, 5), which vibrates during operation and guides the fluid, and a housing enclosing the measuring tube. The housing is composed of a metal cap (7) of two cap halves (71, 72) and a supporting tube (6), in which the measuring tube is held at its inlet and outlet ends in a manner such that the tube can oscillate, and out of which a measuring tube segment protrudes sideways. Each cap half has an edge (73; 74) with, in each case, four edge portions (731, 732, 733, 734; 741, 742, 743, 744). The edge portions (731; 741) are straight, the edge portions (732, 733; 742, 743) are curved, and the edge portions (734; 744) have the shape of circular arcs. The edge portions (731, 732, 733; 741, 742, 743) are welded continuously to the supporting tube (6) and the edge portions (734; 744) are welded continuously to one another.

Abstract: An ultrasonic flow measuring device which provides a flow measuring device characterized by a low electrical current consumption and low power uptake. At least one component of high power uptake with a control/evaluation unit is provided, with the control/evaluation unit being designed such that the component of high power uptake is operated intermittently in a measuring phase and in an idle phase, with the component being activated in the measuring phase, while, in the idle phase, the component exhibits a reduced power uptake or is completely turned off.

Abstract: A measurement pickup includes at least four measuring tubes for conveying media to be measured. Each measuring tube has a first in-/outlet end and a second in-/outlet end. During operation, the measuring tubes vibrate, at least at times, especially simultaneously. The measurement pickup further includes an electromechanical exciter mechanism causing the measuring tube to vibrate, as well as a sensor arrangement reacting at least to local vibrations of the measuring tubes for producing at least one measurement signal influenced by vibrations of the measuring tubes.

Abstract: A method for the dry calibration of an ultrasonic flow measuring device, wherein, on the basis of predetermined, geometric, production data of the flow measuring device, information concerning the theoretical flow of the medium through a measuring tube is won, actual geometric measurement data of the flow measuring device is three-dimensionally determined, on the basis of the actual geometric measurement data, information concerning the actual flow of the medium through the flow measuring device is won, and, on the basis of the information regarding the theoretical flow, and the actual flow, of the medium through the flow measuring device, a correction, or calibration, factor is determined for the flow measuring device.

Abstract: The sensor includes at least one measuring tube for guiding a fluid The measuring tube an inlet end and an outlet end, and vibrating at least at times. The measuring tube communicates, by way of a first tube segment leading into the inlet end and a second tube segment leading into the outlet end, with a pipeline connected for allowing the fluid to flow through the measuring tube. The measuring tube is held oscillatably by means of a support, which is secured to the first tube segment by means of a first transition piece and to the second tube segment by means of a second transition piece. Especially for producing mass-flow-dependent, Coriolis forces and/or for producing viscosity-dependent frictional forces in flowing fluids, the measuring tube executes, during operation, mechanical oscillations about an oscillation axis (S) imaginarily connecting the two tube segments.

Abstract: To conduct a fluid, the transducer has a flow tube which in operation is vibrated by an excitation assembly and whose inlet-side and outlet-side vibrations are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into torsional vibrations about a longitudinal flow-tube axis. The transducer further comprises a torsional vibration absorber which is fixed to the flow tube and which in operation covibrates with the torsionally vibrating flow tube, thus producing reactive torques which at least partially balance torques developed in the vibrating flow tube. One of the advantages of the transducer disclosed is that it is dynamically balanced to a large extent even in the face of variations in fluid density or viscosity.

Abstract: A measurement pickup is provided offering a high measure of safety and having a measurement pickup housing (1, 57), a sensor element (9, 61, 99) arranged in the measurement pickup, at least one connection element (5, 77, 101) closing the measurement pickup housing (1, 57), and an excess-pressure protection device (33, 103), especially a burst disk (37, 85) or a pressure relief valve, integrated in the connection element (5, 77) and serving to effect a pressure equalization with an environment of the measurement pickup in the case of a pressure overload in the measurement pickup.

Abstract: A method of operating a magneto-inductive flow meter in which the damping constant for processing of measurement signal values is automatically increased during a cleaning procedure, in order that, during the cleaning procedure, the amount of the used cleaning medium can be easily determined, despite increased fluctuation in the measurement signal values.

Abstract: The measurement transducer includes: At least one interconnected system (1, 2) formed by means of at least two components (1, 2), especially components (1, 2) of metal. At least the first component (1) of the interconnected system is, in such case, embodied as a composite, formed part composed of at least two materials, which differ from one another with respect to at least one physical and/or chemical property, especially a material density, melting temperature, coefficient of thermal expansion and/or modulus of elasticity, etc. As a result of using at least one composite component (1), the at least two components of the interconnected system (1, 2) can be bonded together lastingly and reliably, especially by means of welding, such being true especially also for the case in which the interconnected system is a bi-, or poly-, metal, interconnected system (1, 2).

Abstract: A transducer has at least one at least temporarily vibrating flow tube of predeterminable lumen for conducting a fluid. The flow tube communicates with a connected pipe via an inlet tube section (103), ending in an inlet end, and an outlet tube section, ending in an outlet end, and in operation performs flexural vibrations about an axis of vibration joining the inlet and outlet ends. The flow tube has at least one arcuate tube section of predeterminable three-dimensional shape which adjoins a straight tube segment on the inlet side and a straight tube segment on the outlet side. At least one stiffening element is fixed directly on or in close proximity to the arcuate tube segment to stabilize the three-dimensional shape. By means of the at least one stiffening element, the cross sensitivity of the transducer is greatly reduced, so that cross talks from pressure to mass flow signals are minimized and the accuracy of the transducer is improved.

Abstract: A mount for electrical leads to a vibration-type sensor and/or for coils on a vibration-type sensor. The mount includes at least one resilient first arm attached to a first sensing tube of the sensor and at least one resilient arm attached to a second sensing tube of the sensor. The two sensing tubes, which are caused to vibrate during operation of the sensor, form a double-tube arrangement having a longitudinal gravity line, which lies in an imaginary central plane extending between the two, preferably parallel, sensing, tubes. The two arms of the mount are essentially rigidly connected to one another at a connecting location remote from the two sensing tubes, and the mount exhibits a first eigenmode of predeterminable mechanical resonance frequency, f1, at which the first arm attached to the first sensing tube and the second arm attached to the second sensing tube oscillate pendularly essentially perpendicular to the central plane of the double-tube arrangement.

Abstract: A method for operating an automation technology field device connected via a bus system with a superordinated unit and having an identifier identifying the type of the field device, at least one alternative identifier AKF1, which identifies a similar type of field device, is stored, in addition to an identifier KF1, in the field device F1. This alternative identifier AKF1 is transmitted, on query, to the superordinated unit PLC, when the superordinated unit fails to accept as valid the identifier KF1 transmitted in prior queries. In this way, a replacement of a field device is possible simply and quickly.

Abstract: In a method for offline parametering of a field device with the help of an operating program B running on an operating device B, the operating program B communicates with a copy of the device software program GS that runs in the field device F1.

Abstract: A measuring tube of the in-line measuring device is lined internally with a liner. The liner is made of a polyurethane produced using a catalyst that contains metal-organic compounds. The metals that are brought into the liner and remain there are chemically, especially atomically, bonded to carbon chains formed in the liner. The in-line measuring device is thus especially suited for measuring drinking water.

Abstract: To conduct a fluid, the transducer has a flow tube which in operation is vibrated by an excitation assembly and whose inlet-side and outlet-side vibrations are sensed by means of a sensor arrangement. To produce shear forces in the fluid, the flow tube is at least intermittently excited into torsional vibrations about a longitudinal flow-tube axis. The transducer further comprises a torsional vibration absorber which is fixed to the flow tube and which in operation covibrates with the torsionally vibrating flow tube, thus producing reactive torques which at least partially balance torques developed in the vibrating flow tube. One of the advantages of the transducer disclosed is that it is dynamically balanced to a large extent even in the face of variations in fluid density or viscosity.

Abstract: Field-device electronics including an electric current controller, through which a supply current flows. The electric current controller controls and/or modulates the supply current. The supply current is driven by a supply voltage provided by the external energy supply. Additionally, the field-device electronics has an internal operating and evaluating circuit for controlling the field device, as well as an internal supply circuit lying at a field-device electronics, internal input voltage derived from the supply voltage and feeding the internal operating and evaluating circuit. Provided in the supply circuit is a voltage controller flowed-through, at least at times, by a first component of the supply current. The voltage controller provides in the field-device electronics a first internal, useful voltage controlled to be essentially constant at a predetermined, first voltage level.

Abstract: A process meter for measuring at least one physical process variable of a medium stored in a container or flowing in a line, comprising: a transducer including a sensor arrangement providing measurement signals (s1, s2), said sensor arrangement having: at least a first sensor providing at least a first measurement signal (s1) in response to the physical process variable being measured, particularly to changes in the process variable, and at least a first temperature sensor mounted in said transducer for locally sensing a first temperature, T1, in the transducer, and by means of said at least one temperature sensor, at least a first temperature measurement signal (?1) representing the first temperature, T1, in said transducer; and meter electronics which, using at least said first measurement signal (s1) and a first correction value (K1) for the at least first measurement signal (s1), derive at least one measured value (X) currently representing the physical variable, wherein: during operation, said meter elec

Abstract: A Coriolis mass flow measuring device includes a vibratory measuring transducer having at least one measuring tube, which has medium flowing through it during operation. In operation, the measuring tube is caused by an exciter arrangement to undergo mechanical oscillations, especially bending oscillations. Additionally, the Coriolis mass flow measuring device includes a sensor arrangement for producing oscillation measurement signals (s1, s2) representing the inlet-end and outlet-end oscillations of the measuring tube. Measuring device electronics controlling the exciter arrangement produces an exciter current (iexc) and an intermediate value (X?m) derived from the oscillation measurement signals (s1, s2). This intermediate value represents an uncorrected mass flow. Derived from the exciter current and/or from a component of the exciter current (iexc), an intermediate value (X2) is produced, which corresponds to a damping of the oscillations of the measuring tube.

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: For conveying a fluid, the measuring transducer is equipped with a measuring tube, which is held oscillatably in a support element and vibrates during operation. The measuring tube executes, during operation, at least over part of its length, driven by an exciter arrangement, bending oscillations about an oscillation axis. These bending oscillations predominantly assume an oscillation form having at least three bending oscillation antinodes. Inlet-end and outlet-end oscillations are registered by means of a sensor arrangement. Additionally provided in the measuring transducer is a coupler arrangement connected with measuring tube and with support element and having at least one coupling element interacting mechanically, especially resiliently, with the vibrating measuring tube and the support element.