Endress + Hauser Flowtec Ag

Institut Franco-allemand De Recherches De Saint-louis

Antoine Simon

Mamadi Keita

Ole Koudal

Nikolai Fink

Matthias Brudermann

Daniel Kollmer

Mike Touzin

Antoine Hirth

Frantz Bindler

Markus Rüfenacht

Francois Klein

Ronald Wicki

Roland Roth

Martin Jenzer

The present disclosure relates to a device with an electric load and a replaceable electric energy store. The energy store has at least one first storage unit with a first initial energy quantity and at least one second storage unit with a second initial energy quantity, wherein an electronic circuit is designed to actuate the first storage unit or the second storage unit according to an algorithm. By actuating the first storage unit or the second source unit, the energy supply of the device is ensured by the respective storage unit, and by actuating the first storage unit or the second storage unit, it is ensured that when a remaining energy quantity or an applied energy quantity of one storage unit is low, the respective other storage unit has a remaining energy quantity of at least 10% of a total energy quantity.

Device with electric load

A measuring device having a configurable measuring and operating electronics for delivering a measurement signal, includes a measurement transmitter with an electrical current control circuit for outputting a controlled electrical current, wherein in a first manner of operation an electrical current is set in a first range, and in a second manner of operation an electrical current is set in a second range having a greater interval than the first range; the measuring device further having a microcontroller circuit is connected with the electrical current control circuit for delivering a digital signal for operating the electrical current control circuit, wherein the digital signal has a LOW state and a HIGH state and wherein by operating the electrical current control circuit an output current can be set with an electrical current level in a first interval for the LOW state and in a second interval for the HIGH state.

Measuring device having a switchable measuring and operating electronics for delivering a measurement signal

A converter circuit includes a current interface with a control input, with a current signal output and a current output. The converter circuit includes a micro-processor with a measuring signal input for the digital measuring signal, with a current signal input connected to the current signal output of the current interface, and with a control output connected to the control input of the current interface. The current interface lets the signal current flow through the current output and simultaneously adjust both the amperage to a stationary amperage level corresponding to a control value currently applied to the control input, and to output a sequence of current values at the current signal output. The micro-processor is designed to generate a measuring value sequence on the basis of the digital measuring signal and use it as the basis from which to generate a control value sequence and issue it at the control output as well as to monitor and/or check the current interface using the control value sequence and the current value sequence.

Converter circuit with current interface and measuring device with such respective converter circuit

The terminal block () serves for electrically connecting a connection line having at least two conductors (L, L) and extending externally of an electronics housing (H). The terminal block comprises a platform () composed at least partially of an electrically insulating, synthetic material, especially a synthetic material having a dielectric strength sufficient to meet European standard EN 60947-1, a connection terminal (TI) arranged on a first side of the platform forming a first connection side of the terminal block and serving for connection of a conductor (L) of the connection line as well as at least one connection terminal (T) arranged on the first side of the platform, laterally spaced from the connection terminal (T) for connection of a conductor (L) of the connection line. Additionally, the terminal block comprises a connection contactor (J) arranged on a second side of the platform forming a second connection side of the terminal block, e.g. especially a connection contactor embodied as a contact pin or as a contact jack, as well as a connection contactor (J) arranged on the second side of the platform and laterally spaced from the connection contactor (J), e.g. a connection contactor embodied as a contact pin or as a contact jack.

Terminal block, connection apparatus formed therewith, and field device with such a connection apparatus

A circuit arrangement comprises a voltage regulator coupled to an external voltage supply and a control loop associated with the voltage regulator. The control loop includes an electrical current controller for setting the electrical current value, an analog-digital converter, a reference resistor and a computation/control unit coupled with the voltage regulator and the said analog-digital converter, and the control loop is so embodied that the voltage regulator, as a function of the presently set electrical current value, controls a voltage to an external load connected with the electrical current output. Particularly the computation/control unit is adapted to calculate a voltage to be delivered by the voltage regulator and to operate both, the electrical current controller and the voltage regulator for setting the electrical current value and to operate and for tuning the voltage delivered by the voltage regulator as a function of the presently set electrical current value, respectively.

Circuit arrangement for reducing power loss in the case of an active electrical current output of a field device

The present invention relates to a measuring transducer of the vibration-type for a fluid flowing in a flexible hose. The measuring transducer includes, a hose carrier unit, which has at least sectionally a loop-shaped outer contour, around which a flexible hose can be led. Furthermore, the measuring transducer includes a clamping unit, by which a flexible hose led in use around the loop-shaped outer contour is tightenable against the loop-shaped outer contour, at least one exciter coupled to the hose carrier unit, by which the hose carrier unit is excitable to execute mechanical oscillations, which are accompanied by alternating elastic deformation of the hose carrier unit, and at least one oscillation sensor, by which mechanical oscillations of the hose carrier unit and/or a flexible hose installed in use in the measuring transducer are registerable.

Measuring transducer of vibration-type for a fluid flowing in a flexible hose

A fieldbus unit for connection of a field device to a fieldbus comprising two conductors is designed to transfer a signal via the fieldbus by modulation of an electrical current drawn by the field device. The fieldbus unit comprises: an electrical current control transistor, through which the electrical current drawn by the field device flows, wherein the electrical current drawn by the field device is controlled via a base current of the electrical current control transistor; a bipolar transistor, via whose emitter-collector, electrical current path the base current for driving the electrical current control transistor flows; as well as an electrical current controller, which produces an electrical current control signal for controlling the electrical current drawn by the field device. The base of the bipolar transistor is placed at an essentially constant potential, which is so selected, that the bipolar transistor supplies the electrical current control transistor a base current sufficient for start-up of the field device, when the electrical current controller is not supplied with electrical current and delivers no electrical current control signal. The electrical current controller feeds the electrical current control signal via the emitter-collector, electrical current path of the bipolar transistor.

Fieldbus unit for a two-conductor fieldbus

An optoelectronic device for transmission of an electrical signal of an input electrical current circuit to an output electrical current circuit galvanically isolated from the input electrical current circuit. The device includes a housing. The input electrical current circuit contains, for producing an optical signal, an optical transmitting unit, which is arranged in the housing. The output electrical current circuit contains, for receiving the optical signal, an optical receiving unit, which is arranged in the housing. At least one fuse mechanism is provided in the housing, which interrupts transmission of the electrical signal in the case of an electrical current flow, which lies above a predetermined electrical current level.

Optoelectronic device with a built-in fuse mechanism

A ultrasonic flow measuring device, which is distinguished by a low energy consumption. A control/evaluation unit ascertains a plurality of sampled values (awith i=1, 2, 3, . . . ) of a received measuring signal at defined points in time (t) of a predetermined time range and interpolates the sampled values by a continuous function (f(t)), wherein the continuous function (f(t)) is formed by a sum of a predetermined number (n &#x2208; N) of wavelets (W) and wherein each wavelet (W) corresponds to the product of a sampled value with a sine function and with a Gaussian bell curve (e, &#x3b1; &#x2208; R).

Device for determining and/or monitoring the volume flow rate and/or mass flow rate of a medium to be measured

The power supply of a laser tube which, according to the invention comprises devices for pulse formation and means for pulse triggering and is characterized in that it contains a pre-ionization circuit (4, 6) to form a pre-ionization pulse, and an excitation circuit (17, 22) to form an excitation pulse, and devices for synchronization (15) of the pre-ionization pulse and the excitation pulse.

Growing community of inventors

St. Louis, France

Antoine Simon