Endress + Hauser Flowtec Ag

Other

Endress+hauser Gmbh+co. Kg

Endress +hasuer Flowtec Ag

Endress+hauser (deutschland) Ag+co. Kg

Christian Matt

Wolfgang Drahm

Alfred Wenger

Ennio Bitto

Michael Fuchs

Ole Koudal

Alfred Rieder

Gerhard Eckert

Holger Bernhard

Gebhard Gschwend

Georg Szaloky

Robert Lalla

Gernot Engstler

Michael Lambrigger

Daniel Kuttler

Christian Sch&uuml;tze

Hans Pohl

Sergej Lopatin

Beat Tschudin

Helmut Pfeiffer

Christian Schutze

Marcel Braun

Martin Anklin-Imhof

Matthias Brudermann

Thomas Bier

Matthias Altendorf

Martin Stucki

Bruno Worreth

Roman H&auml;berli

Steffen Weiss

Michael Lammbrigger

Philipp Alber

Ida Vercna Kobel Wenger, Legal Representative

Roman Häberli

An adapter includes several connecting nozzles. Free nozzle ends of the connecting nozzles are adapted to be connected to line ends of fluid lines. The adapter includes, for guiding flowing fluid in and then out, two mutually separated, tubular flow channels. Moreover, the adapter includes a projection, which extends from the nozzle end with a length to a free projection end remote therefrom. A fluid line system formed by means of the adapter comprises, furthermore, a fluid line with, enveloped by a wall, a lumen. The fluid line can be connected with its line end to the connecting nozzle of the adapter in such a manner that the projection protrudes inwardly into the lumen of the fluid line to form two tubular chambers of the fluid line mutually separated by the projection and adapted for guiding through flowing fluid.

Fluid line system with adapter for connecting fluid lines

Adapter for connecting fluid lines and fluid line system formed therewith

The invention relates to a field device of measuring and automation technology. The field device has a radio module for providing access to an operating electronics of the field device. Such access enables the exchange of information between the operating electronics and a user. The radio module can be turned on by a first input signal sequence composed of accelerations of the field device housing and can be turned off by a second input signal sequence. A field device of the invention is shown schematically in FIG.

Field device of measuring and automation technology

A measuring system for measuring at least one measured variable of a flowing fluid, comprises a fluid supply line, a transducer apparatus, which has a tube and at least one other tube and is adapted to deliver at least one measurement signal corresponding to the at least one measured variable, a fluid return line, and a fluid withdrawal line. To open a first flow path, which leads from the lumen of the fluid supply line to the lumen of the tube, further to the lumen of the tube and further to the lumen of the fluid return line, equally as well not to the lumen of the fluid withdrawal line, and thereafter to allow fluid to flow along the flow path for the maintaining the temperature and/or for cleaning of parts of the measuring system and/or for conditioning fluid. It is, additionally, provided (instead of the first flow path) thereafter to open a second flow path, which leads from the lumen of the fluid supply line to the lumen of the first tube and, in parallel, to the lumen of the second tube and further from the lumen of the first tube, and from the lumen of the second tube, in each case, to the lumen of the fluid withdrawal line, as well as to allow fluid to flow along the second flow path. Moreover, it is provided, while allowing fluid to flow along the second flow path, in given cases, also while allowing fluid to flow along the first flow path, to generate at least one measurement signal, as well as to use the measurement signal for ascertaining measured values of the at least one measured variable.

Measuring system for measuring at least one measured variable of a fluid as well as method for operating such a measuring system

The measuring transducer comprises four measuring tubes () as well as two oscillation exciters and (). The oscillation exciter () includes a coil () secured to the measuring tube () as well as a permanent magnet () secured to the measuring tube () and movable relative to the coil () and the oscillation exciter () includes a coil () secured to the measuring tube () as well as a permanent magnet () secured to the measuring tube () and movable relative to the coil (). In the case of the measuring transducer of the invention, the coils () are connected electrically in parallel with one another.

Measuring transducer of vibration-type

A measuring device electronics comprises a processor and two clock signal generators. One clock signal generator serves for producing a working clock signal, and also for producing a reference clock signal which is dependant on the working clock signal. The other clock signal generator, serves for producing a second reference clock signal, which is independent of the working clock signal. Based on the two independent reference clock signals, a frequency difference, can, to the extent that such is present, be ascertained during operation of the measuring device electronics or of the measuring device formed therewith. The frequency difference, represents a difference between the instantaneous clocking frequency of the first reference clock signal and the instantaneous clocking frequency of the second reference clock signal, and, in this respect, represents a measure for a deviation of an instantaneous clocking frequency, from the nominally predetermined clocking frequency, of the working clock signal.

Measuring device electronics for a measuring device as well as measuring device formed therewith

In a method for determining mass flow with a Coriolis mass flow measuring device arranged on a rotary filler, a correction value &#x394;{dot over (m)} is ascertained, which is proportional to the RPM n of the rotary filler. This correction value is subtracted from the conventionally ascertained value {dot over (m)} of the mass flow. The corrected measured value {dot over (m)}is thus {dot over (m)}={dot over (m)}&#x2212;&#x394;{dot over (m)}.

Method for determining the mass flow through a coriolis mass flowmeter arranged on a rotating filling element

A measuring device includes: a measuring transducer accommodated, at least partially, in a housing, for registering at least one, measured variable; and a measuring device electronics electrically connected, at least at times, with the measuring transducer. The measuring device electronics includes at least one measurement channel for registering and further processing at least one primary signal generated by means of the measuring transducer, and an electrical current measuring circuit for registering measuring-device-internally flowing, electrical currents. Furthermore, it is provided, that the electrical current measuring circuit registers, during operation, at least at times, especially recurringly, an electrical leakage current, which flows as a result of a potential difference existing, at least at times, between housing and measuring device electronics and as a result of an electrically conductive connection likewise existing between housing and measuring device electronics, especially an undesired, electrically conductive connection and/or an electrically conductive connection formed by a deposit affecting the housing. Taking into consideration the registered leakage current, the measuring device electronics generates, additionally, at least one state value, especially a digital state value, instantaneously representing an operating state, especially a defective operating state, of the measuring device.

Measuring device and method for monitoring a measuring deivce

To ascertain the mass-flow of a Coriolis mass-flow meter, an oscillation of a measuring tube is produced with the frequency f and the resulting oscillatory movement is registered at two different measuring points with two oscillation sensors. The analog sensor signals X, Xof the two oscillation sensors are converted into digital sensor signals Sand Sand further processed in a digital signal processor DSP. In the signal processor DSP, the sum signal &#x3a3; and the difference signal &#x394; are formed from the two sensor signals Sand S. Then the sum signal is rotated by 90&#xb0;. In a further method step, the shifted sum signal is multiplied with the difference signal &#x394;. After ascertaining the amplitude of the sum signal &#x3a3;, the mass-flow is ascertained using the formula {dot over (m)}&#x2dc;|Im(&#x394;)|/(|&#x3a3;|f). It is not necessary for the method, that the two sensor signals S, Shave equal amplitudes. Thus, a controlling of the analog signals X, Xto equal amplitudes can be omitted.

Method for determining the mass flow through a coriolis mass flowmeter

The viscometer comprises a vibratory transducer with at least one flow tube for conducting a fluid to be measured and for producing friction forces acting in the fluid. To vibrate the at least one flow tube, an excitation assembly is provided, which in operation is traversed by an excitation current. To generate the excitation current and a viscosity value representing the viscosity of the fluid, the viscometer includes meter electronics which are connected to, and supplied with electric power from, a two-wire process control loop. The meter electronics feed a viscosity signal corresponding to the measured viscosity value into the two-wire process control loop. The viscometer is suitable for measuring a fluid flowing in a pipe, particularly in potentially explosive atmospheres.

Viscometer

A vibration meter and a method of measuring a viscosity of a fluid flowing through a pipe are disclosed. The vibration meter comprises meter electronics and a transducer assembly with an electromechanical excitation arrangement and with a flow tube which oscillates in operation. A sensor arrangement produces sensor signals representative of inlet-side and outlet-side deflections of the flow tube. An evaluation circuit derives from said sensor signals and from an excitation current generated by an excitation circuit for the excitation arrangement a viscosity value representative of the viscosity of the fluid.

Vibration meter and method of measuring a viscosity of a fluid

In a method for determining mass-flow with the aid of a Coriolis mass-flow meter in which mass-flow ({dot over (m)}) is won from the phase difference of two sensor signals X, X, three measuring channels K, K, Kare provided for the two sensor signals X, X. By selective switching of the sensor signals X, Xonto the measuring channels K, K, K, phase error caused by the different signal paths can be determined and taken into consideration when calculating mass-flow ({dot over (m)}).

Measuring and operational circuit for a coriolis-mass flow meter comprising three measuring channels

An apparatus for monitoring a measurement transmitter of a field device determining and/or monitoring a physical and/or chemical process parameter, wherein at least one sensor is provided inside the a housing, in which the transmitter is arranged. The sensor determines the temperature and relative humidity in the housing over a period of time in predetermined intervals, and a control-/evaluation-unit is provided, which, on the basis of the measured temperature and relative humidity, determines the absolute humidity and/or the dewpoint in the housing of the transmitter, and issues and alarm when the absolute humidity and/or the dewpoint in the housing of the transmitter reaches a critical value.

Apparatus for monitoring a measurement transmitter of a field device

The measurement transducer includes at least two oscillatably held transducer tubes vibrating, at least at times, during operation, of which at least one transducer tube serving to convey at least a volume portion of a medium to be measured, communicates with a pipeline; as well as at least one transducer element for converting electrical energy into mechanical and/or vice versa. The two transducer tubes are mechanically coupled together by means of at least one, inlet-side, coupling element and by means of at least one, outlet-side, coupling element in such a manner that both the inlet-side coupling element, as well as also the outlet-side coupling element, are subjected during operation repeatedly to deformations which correspond to vibrations of at least one of the two transducer tubes for converting electrical energy into mechanical, oscillatory energy and/or vice versa. The transducer element, especially a transducer element formed by means of a piezoelectric, deformation body, and at least one of the coupling elements, are, at least mediately, mechanically coupled together in such a manner that the transducer element executes, at least in part, oscillatory movements, which correspond with the repeated deformations at least of this coupling element.

Measurement transducer of vibration-type

A Coriolis flow meter, which includes: at least one measuring tube, which is excited to oscillate during measurement operation, and through which a medium flows, first and second sensors for registering a flow-dependent oscillation of the measuring tube and for producing first and second sensor signals; and two separated, signal-processing branches. According to a method of flow measurement a reference signal is superimposed on the first or second of the sensor signals, by the passing through both signal processing branches of an auxiliary signal formed by the superimposing, and by the filtering of a first, conditioned, reference signal from a first signal occurring on the output of the first signal processing branch and the filtering of a second, conditioned, reference signal from a second signal occurring on the output of the second signal processing branch, and by determining a ratio of the amplification gains of the signal processing branches on the basis of the conditioned, reference signals.

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Aesch, Switzerland

Christian Matt