公开(公告)号：EP1955021B1

公开(公告)日：2018-05-02

申请号：EP06830250.4

申请日：2006-11-30

申请人： Endress+Hauser Flowtec AG

发明人： KOUDAL, Ole ,  POPP, Oliver ,  GIMSON, Chris ,  KHAN, Mohammed ,  BAILEY, Jonathan ,  LLOYD, Gary ,  MOTTERSHEAD, Neil ,  KARBULA, Jiri

IPC分类号： G01F1/696 ,  G01F1/698 ,  G01F1/699

CPC分类号： G01F1/6965 ,  G01F1/6986 ,  G01F1/699

公开(公告)号：EP1955022A1

公开(公告)日：2008-08-13

申请号：EP06841277.4

申请日：2006-11-30

申请人： Endress+Hauser Flowtec AG

发明人： POPP, Oliver ,  KOUDAL, Ole ,  GIMSON, Chris ,  KHAN, Mohammed ,  BAILEY, Jonathan

IPC分类号： G01F1/696 ,  G01F25/00

CPC分类号： G01F1/696 ,  G01F25/0007

摘要： The invention relates to a device for determining and/or monitoring the mass flow rate of a fluid medium through a conduit (2) or through a measuring tube. Said device has at least two temperature sensors (11, 12) and a control/evolution unit (10), both temperature sensors (11, 12) being located in a region of the housing (5) facing the medium (3) and being in thermal contact with the medium (3) flowing through the conduit (2) or through the measuring tube. A first temperature sensor (11) and a second temperature sensor (12) are configured as to be heatable. The first temperature sensor (11) and the second temperature sensor (12) can be alternately actuated to be a passive, non-heated temperature sensor providing data on the actual temperature of the medium (3) during a first measuring interval, and as an active, heated temperature sensor providing data on the mass flow rate of the medium (3) through the conduit (2) or through the measuring tube (2) during a second measuring interval. The control/evaluation unit (10) outputs a message and/or carries out a correction of the recorded mass flow rate if the measured values of the two temperature sensors (11, 12) acquired during the first measuring interval and during the second measuring interval differ from each other.

公开(公告)号：EP1955021A2

公开(公告)日：2008-08-13

申请号：EP06830250.4

申请日：2006-11-30

申请人： Endress+Hauser Flowtec AG

发明人： KOUDAL, Ole ,  POPP, Oliver ,  GIMSON, Chris ,  KHAN, Mohammed ,  BAILEY, Jonathan ,  LLOYD, Gary ,  MOTTERSHEAD, Neil ,  KARBULA, Jiri

IPC分类号： G01F1/696

CPC分类号： G01F1/6965 ,  G01F1/6986 ,  G01F1/699

摘要： The invention relates to a thermal measurement device for determining and/or monitoring the mass flow of a fluid medium (3) through a pipeline (2) or through a measurement tube, comprising at least two temperature sensors (11, 12) and a regulation/analytical unit (10), both temperature sensors (11, 12) being resistance elements of which one is of a design which may be heated, both temperature sensors (11, 12) are arranged In a region of a housing (5) facing the medium (3) and are in thermal contact with the medium (3) flowing through the pipeline (2) or measuring tube. The regulation/analytical unit is provided with two differing precision resistances (R1, R2), the first precision resistance (R1) having a first defined value (Y1) and the second precision resistance (R2) having a second defined value (Y2), wherein the regulation /analytical unit (10) assigns a measured resistance (Rx1; Rx2) determined on a resistance element (11, 12) a measurement value (Y1; Y2) lying on a straight line (g) running through two calibration points ((R1, Y1), (R2, Y2)) provided by two precision resistances (R1,R2) and the regulation /analytical unit (10) determines the mass flow through the pipeline (2) or the measuring tube from the measured values (Y1,Y2) provided by the temperature sensors (11, 12).

摘要翻译： 本发明涉及一种用于通过管线（2）或通过测量管确定和/或监测流体介质（3）的质量流量的热测量装置，包括至少两个温度传感器（11,12）和调节 /分析单元（10），两个温度传感器（11,12）是电阻元件，其中一个是可以被加热的设计，两个温度传感器（11,12）都布置在壳体（5）的面向 介质（3）并与流过管道（2）或测量管的介质（3）热接触。 调节/分析单元具有两个不同的精密电阻（R1，R2），第一精密电阻（R1）具有第一限定值（Y1）和具有第二限定值（Y2）的第二精密电阻（R2） 其中所述调节/分析单元（10）分配在电阻元件（11,12）上确定的测量电阻（Rx1; Rx2），所述测量电阻（Y1，Y2）位于通过两个校准点的直线（g）上 由两个精密电阻（R1，R2）和调节/分析单元（10）提供的（R1，Y1），（R2，Y2））根据测量值确定通过管道（2）或测量管的质量流量 Y1，Y2），由温度传感器（11,12）提供。