Endress + Hauser Flowtec Ag

Hanno Schultheis

Alexander Grün

Stephan Gaberthüel

Tobias Baur

Axel Pfau

Anastasios Badarlis

Oliver Popp

Martin Barth

Lars Neyerlin

Martin Arnold

Panagiotis Papathanasiou

Vivek Kumar

Rainer Höcker

Sascha Kamber

Emioni Papadopoulou

Mathieu Habert

A thermal flow measuring device comprising a sensor with a metal sensor housing, the sensor housing including at least a first and a second pin sleeve extending from a base, each pin sleeve having a longitudinal axis and an end face, the two pin sleeves defining a connecting axis, wherein in the first pin sleeve a first heater is arranged and in the second pin sleeve a temperature sensor is arranged, wherein the sensor housing includes at least a third pin sleeve, having a second heater, and a flow obstruction embodied such that the third pin sleeve is arranged in a first flow direction at least partially in the flow shadow of the flow obstruction, wherein the first flow direction extends at an angle of 80-100&#xb0; to the connecting axis and lies on a plane perpendicular to the longitudinal axes of the first and second pin sleeves.

Thermal, flow measuring device and arrangement with a tube or pipe and the thermal, flow measuring device

Disclosed is a thermal flowmeter for measuring mass flow of a medium in a measuring tube, comprising: a measuring tube having a tube wall and a tube axis; a sensor with four probes, extending from a sensor base into the measuring tube, wherein the probes are adapted to heat medium, to determine its temperature or to influence a flow of the medium; and an electronic circuit, adapted to operate the probes and to create and to provide flow measured values. Each probe has a probe base and a probe active portion, wherein the probe active portion is adapted to heat the medium, to determine the temperature of the medium, and/or to influence a flow of the medium. The probe bases define a rhombus on a surface of the sensor base, wherein the rhombus is defined by geometric centers of cross sections of the probe bases.

Thermal flowmeter and method for operating a thermal flowmeter

The present disclosure relates to a method for manufacturing a sensor for a thermal, flow measuring device. The method includes, in such case, manufacturing a metal jacketing for a sensor core, introducing the sensor core into the metal jacketing and sintering the metal jacketing with introduced sensor core.

Method for manufacturing a sensor of a thermal, flow measuring device for measuring mass flow of a medium in a measuring tube

The present disclosure relates to a process connection for connecting a flow measuring device, to a pipeline, the process connection including a base body having an opening for conducting a medium and a flow rectifier, wherein the flow rectifier is inserted into a first recess of the base body and fixed in place by plastic deformation of an edge region of the base body surrounding the first recess, for example, by press fitting.

Process connection for connecting a flow measuring device to a pipeline, field device for automation technology and method for fastening a flow rectifier to a process connection

The present disclosure relates to a method for producing a probe of a thermal flow meter for measuring the mass flow rate of a medium in a measuring tube, the method having the following steps: introducing a probe core in the form of a material to be melted into a first probe casing, the first probe casing having an open first end and a closed second end facing away from the first end; melting the probe core; quenching the probe core to a temperature below the solidification temperature; attaching a thermoelement to a contact surface of the solidified probe core. The invention also relates to a probe obtained according to the production method and to a flow meter including the probes according to the present disclosure.

Method for producing a sensing element for a thermal flow meter, sensing element and flow meter

Disclosed is a sensor of a thermal, flow measuring device. The sensor includes a sensor cup having at least one protrusion on the floor of the cup that assures a constant spacing of a sensor element from the cup floor so that a good temperature transfer between the sensor element and a medium flowing around the sensor is assured. Also disclosed is a thermal, flow measuring device employing such a sensor.

Sensor for a thermal, flow measuring device having sensor element spacing protrusions

The present disclosure relates to a method for manufacturing a probe of a thermal, flow measuring device for measuring mass flow of a liquid in a measuring tube, wherein the method includes: introducing a probe core including a hard solder and a core element into a first probe sleeve, wherein the first probe sleeve has an open first end and a closed second end away from the first end; melting the hard solder; affixing the core element by cooling the hard solder to a temperature less than the solidification temperature; and applying a thermoelement to a contact area of the core element or of the solidified hard solder. The present disclosure relates, furthermore, to a probe resulting from the manufacturing process as well as to a flow measuring device having at least one probe of the-present disclosure.

Thermal flow measuring device including probe having probe core with hard solder

A thermal, flow measuring device comprising a sensor with a metal sensor housing, which includes a cap with a lateral surface and an end face, wherein the sensor housing has at least first and second pin sleeves, which protrude starting from the end face, wherein the sensor housing has a first heater in a first of the two pin sleeves and a temperature sensor in a second of the two pin sleeves for ascertaining a temperature of the medium; wherein the end face of the cap is divided at least into a base area and at least a first planar area inclined relative to the base area by an angle, wherein a second heater is arranged on an inner surface of the cap in the region of this first area.

Thermal, flow measuring device and a method for manufacturing a thermal, flow measuring device

The present disclosure relates to a sensor for a thermal flow measuring device, to a thermal flow measuring device, as well as to a method for the manufacture of such a sensor. The sensor includes a sensor thimble, wherein a defined separation of a sensor element from a thimble floor of the sensor thimble is provided by spacers so that a temperature transfer between the sensor and a liquid flowing around the sensor is provided. Thermal contact between the thimble floor and the sensor element is provided by a solder layer.

Sensor for a thermal flow meter, a thermal flowmeter and a method for producing a sensor of a thermal flow meter

A measuring device which has at least a first component, in which an integral measurement duct is provided or the first component forms in connection with additional components a measurement duct integrally in the measuring device. The measurement duct is provided for conducting a measured medium through the measuring device, characterized in that the first component has a first sensor for determining a first thermophysical property selected from thermal conductivity, thermal diffusivity and/or specific heat capacity of the measured medium, and wherein the measuring device has a second sensor, which vibrates and is provided for determining viscosity and/or density of the measured medium. The measured medium is conducted through the measurement duct from the first sensor to the second sensor.

Measuring device and method for determining a corrected mass flow and uses of the measuring device

A temperature sensor comprising a housing having a housing body and a housing chamber, in which housing chamber are arranged terminally two temperature sensor elements, which are especially embodied as thin-film resistance thermometers, one of the temperature sensor elements is heatable, and from each temperature sensor element at least one connection wire leads away, which is connected with a circuit board. The circuit board is arranged in the housing chamber. The circuit board is positioned in the housing chamber by a snap-in connection. A connection wire of a first temperature sensor element is led with strain relief in a first direction through the circuit board and connected with such. The housing chamber contains at least a first elastic body. The circuit board has a first number of cavities, for connection of connection wires and/or cables and a second number of cavities, for reducing thermal expansion of the circuit board. Also presented is a thermal, flow measuring device.

Temperature sensor and thermal, flow measuring device

A thermal, flow measuring device for determining and/or monitoring a mass flow of a measured medium through a measuring tube, comprising a sensor having a first heatable resistance thermometer and at least a second heatable resistance thermometer, wherein the sensor has a longitudinal axis and an end face, which is divided into at least two adjoining segments, wherein a surface normal vector of at least a first segment forms with the longitudinal axis of the sensor an angle of at least 5&#xb0;; and use of a thermal, flow measuring device.

Thermal, flow measuring device

A method for determining mass flow of a gas by means of a mass flow meter, which has a first and a second temperature sensor, which can be flowed around by the gas. The first temperature sensor is heated with a heating power Q, wherein the mass flow of the medium is determined by means of a power coefficient PC=Q/&#x394;T as a function of a heating power Q and a temperature difference &#x394;T=T&#x2212;Tbetween the measured values of the temperature sensor. A corrected power coefficient PCis determined, wherein at least one correction occurs by means of at least one recovery correction term K, wherein the recovery correction term Khas the form K=&#x394;&#xb7;u/(2&#xb7;c), wherein u is the flow velocity and cthe heat capacity of the medium, &#x394;is an element of the set {&#x394;; &#x394;; &#x394;}, &#x394;:=e&#x2212;c, &#x394;:=e&#x2212;cand &#x394;:=e&#x2212;e=&#x394;&#x2212;&#x394;, eand eare the recovery factors of the first, respectively second, temperature sensors, and wherein cis a constant reference value, for which holds c&#x2266;1, especially c=1.

Growing community of inventors

Hermrigen, Switzerland

Hanno Schultheis