公开(公告)号：US09739652B2

公开(公告)日：2017-08-22

申请号：US14442801

申请日：2013-10-28

Applicant: Endress + Hauser Flowtec AG

Inventor： Axel Pfau ,  Achim Wiest ,  Martin Barth

IPC: G01F1/684 ,  G01F1/69

CPC classification number: G01F1/6842 ,  G01F1/684 ,  G01F1/69

Abstract: A sensor of a thermal flow measuring device, as well as the flow measuring device itself. The sensor comprises a sensor platform, which bears at least one measuring sensor element and a heated sensor element. Each of the at least two sensor elements is surrounded by a metal sleeve, which protrudes from the sensor platform. The sensor has a plate-shaped element, which defines a plane, whose axis extends parallel to the axis of at least one of the metal sleeves, wherein the plane is spaced from the sensor platform in the axial direction of the metal sleeve. The metal sleeve with the heated sensor element has a terminal end face and the plate-shaped element is provided along the end face of the metal sleeve with the heated sensor element for flow guidance.

公开(公告)号：US09696191B2

公开(公告)日：2017-07-04

申请号：US14436156

申请日：2013-09-23

Applicant: Endress + Hauser Flowtec AG

Inventor： Axel Pfau ,  Panagiotis Papathanasiou ,  Stephan Gaberthuel ,  Tobias Baur ,  Hanno Schultheis

IPC: G01F1/69 ,  G01P5/12 ,  G01F1/684

CPC classification number: G01F1/69 ,  G01F1/684 ,  G01F1/6842 ,  G01P5/12

Abstract: 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°; and use of a thermal, flow measuring device.

公开(公告)号：US09671266B2

公开(公告)日：2017-06-06

申请号：US14395627

申请日：2013-03-19

Applicant: Endress + Hauser Flowtec AG

Inventor： Anastasios Badarlis ,  Tobias Baur ,  Axel Pfau ,  Hanno Schultheis

IPC: G01F1/68 ,  G01F1/696

CPC classification number: G01F1/696 ,  G01F1/6965

Abstract: 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/ΔT as a function of a heating power Q and a temperature difference ΔTm=T1−T2 between the measured values of the temperature sensor. A corrected power coefficient PCcorr is determined, wherein at least one correction occurs by means of at least one recovery correction term Ki, wherein the recovery correction term Ki has the form Ki=Δx·u2/(2·cp), wherein u is the flow velocity and cp the heat capacity of the medium, Δx is an element of the set {Δ1; Δ2; Δ12}, Δ1:=e1−cr, Δ2:=e2−cr and Δ12:=e1−e2=Δ1−Δ2, e1 and e2 are the recovery factors of the first, respectively second, temperature sensors, and wherein cr is a constant reference value, for which holds cr≦1, especially cr=1.

公开(公告)号：US20150300856A1

公开(公告)日：2015-10-22

申请号：US14436156

申请日：2013-09-23

Applicant: ENDRESS+HAUSER FLOWTEC AG

Inventor： Axel Pfau ,  Panagiotis Papathanasiou ,  Stephan Gaberthuel ,  Tobias Baur ,  Hanno Schultheis

IPC: G01F1/69

CPC classification number: G01F1/69 ,  G01F1/684 ,  G01F1/6842 ,  G01P5/12

Abstract: 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°; and use of a thermal, flow measuring device.

Abstract translation: 一种用于通过测量管确定和/或监测测量介质的质量流量的热量测量装置，包括具有第一可加热电阻温度计和至少第二可加热电阻温度计的传感器，其中所述传感器具有纵向轴线和 端面被分成至少两个相邻的段，其中至少第一段的表面法线向量与传感器的纵向轴线形成至少5°的角度; 并使用热流量测量装置。

公开(公告)号：US20150075277A1

公开(公告)日：2015-03-19

申请号：US14395627

申请日：2013-03-19

Applicant: Endress + Hauser Flowtec AG

Inventor： Anastasios Badarlis ,  Tobias Baur ,  Axel Pfau ,  Hanno Schultheis

IPC: G01F1/696

CPC classification number: G01F1/696 ,  G01F1/6965

Abstract: 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/ΔT as a function of a heating power Q and a temperature difference ΔTm=T1−T2 between the measured values of the temperature sensor. A corrected power coefficient PCcorr is determined, wherein at least one correction occurs by means of at least one recovery correction term Ki, wherein the recovery correction term Ki has the form Ki=Δx·u2/(2·cp), wherein u is the flow velocity and cp the heat capacity of the medium, Δx is an element of the set {Δ1; Δ2; Δ12}, Δ1:=e1−cr, Δ2:=e2−cr and Δ12:=e1−e2=Δ1−Δ2, e1 and e2 are the recovery factors of the first, respectively second, temperature sensors, and wherein cr is a constant reference value, for which holds cr≦1, especially cr=1.

Abstract translation: 一种用于通过质量流量计测定气体的质量流量的方法，所述质量流量计具有第一和第二温度传感器，该第一和第二温度传感器可以由气体流动。 第一温度传感器用加热功率Q加热，其中介质的质量流量通过功率系数PC = Q /＆Dgr; T作为加热功率Q和温度差Dgr的函数确定; Tm = T1-T2之间的温度传感器的测量值。 确定校正功率系数PCcorr，其中通过至少一个恢复校正项Ki进行至少一次校正，其中恢复校正项Ki具有Ki =＆Dgr; x·u2 /（2·cp）的形式，其中u 是流速，cp是介质的热容量，Dgr; x是集合{＆Dgr; 1; ＆Dgr; 2; ＆Dgr; 12}，＆Dgr; 1：= e1-cr，＆Dgr; 2：= e2-cr和＆Dgr; 12：= e1-e2 =＆Dgr; 1-＆Dgr; 2，e1和e2是第一个 ，分别是第二温度传感器，其中cr是恒定的参考值，其保持cr＆nlE; 1，特别是cr = 1。

公开(公告)号：US11015964B2

公开(公告)日：2021-05-25

申请号：US15769808

申请日：2016-09-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Stephan Gaberthüel ,  Axel Pfau ,  Tobias Baur

IPC: G01F1/684 ,  G01F15/14

Abstract: A thermal, flow measuring device comprising a sensor with a metal sensor housing, which has a hollow body for connecting to a plug-in apparatus and/or a tube or pipe wall, wherein the hollow body has a base area; wherein the sensor housing has at least first and second pin sleeves, which protrude starting from the base area, wherein the metal sensor housing is embodied as one piece and the pin sleeves and the hollow body are connected together seam freely, especially weld seam freely.

公开(公告)号：US20190025103A1

公开(公告)日：2019-01-24

申请号：US15769808

申请日：2016-09-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Stephan Gaberthüel ,  Axel Pfau ,  Tobias Baur

IPC: G01F1/684 ,  G01F15/14

Abstract: A thermal, flow measuring device comprising a sensor with a metal sensor housing, which has a hollow body for connecting to a plug-in apparatus and/or a tube or pipe wall, wherein the hollow body has a base area; wherein the sensor housing has at least first and second pin sleeves, which protrude starting from the base area, wherein the metal sensor housing is embodied as one piece and the pin sleeves and the hollow body are connected together seam freely, especially weld seam freely.

公开(公告)号：US20180306620A1

公开(公告)日：2018-10-25

申请号：US15769788

申请日：2016-09-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Hanno Schultheis ,  Alexander Grün ,  Axel Pfau

IPC: G01F1/684 ,  G01F1/69

CPC classification number: G01F1/6842 ,  G01F1/69

Abstract: 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.

公开(公告)号：US10107661B2

公开(公告)日：2018-10-23

申请号：US14652185

申请日：2013-11-25

Applicant: Endress + Hauser Flowtec AG

Inventor： Harald Muller ,  Axel Pfau ,  Florian Krogmann ,  Thomas Schonstein

IPC: G01F1/692 ,  G01F1/696

Abstract: A thin-film sensor for a thermal flowmeter with at least a first substrate layer made of electrically non-conductive material, a second layer made of electrically conductive material and a cover layer to protect the resistance layer against abrasion, wherein the second layer is designed as two sensor elements, wherein at least a first of the two sensor elements is designed to introduce a heat quantity into a medium, and at least a second of the two sensor elements is designed to determine the ambient temperature, and the thin-film sensor has a gap that isolates the two sensor elements from one another.

公开(公告)号：US20180299307A1

公开(公告)日：2018-10-18

申请号：US15769175

申请日：2016-09-08

Applicant: Endress+Hauser Flowtec AG

Inventor： Martin Barth ,  Alexander Grün ,  Emioni Papadopoulou ,  Axel Pfau

IPC: G01F1/684 ,  G01F15/14 ,  G01F1/69

Abstract: The application discloses a thermal, flow measuring device comprising: a sensor including a metal sensor housing having a hollow body and a base; and at least first and second pin sleeves protruding from the base. In a first of the two pin sleeves a first heater is provided and in a second of the two pin sleeves a temperature sensor is provided for ascertaining a temperature of a medium. At least two elongated elements extend with at least the same length as the pin sleeves starting from the hollow body in parallel with the two pin sleeves. On a cutting plane perpendicular to the sensor axis another axis extends that is perpendicular to the connecting axis and wherein the separation of the elongated elements in their course parallel with the axis lessens in certain regions.