公开(公告)号：EP2893786B1

公开(公告)日：2017-03-01

申请号：EP13756858.0

申请日：2013-08-28

Applicant: Endress+Hauser Flowtec AG

Inventor： FINK, Nikolai ,  MOSER, Thiérry ,  ENGSTLER, Gernot ,  KOUDAL, Ole

IPC: H05K7/14

CPC classification number: H05K5/069 ,  H05K5/0247 ,  H05K7/1462 ,  H05K7/1465

公开(公告)号：EP1800193A1

公开(公告)日：2007-06-27

申请号：EP05787208.7

申请日：2005-09-16

Applicant: Endress + Hauser Flowtec AG

Inventor： BORST, Walter ,  KOUDAL, Ole ,  SEIFERT, Oliver

IPC: G05B19/418

CPC classification number: G05B19/41845 ,  Y02P90/16

Abstract: The invention relates to a method for operating a modularly constructed automation technology field device, which has a number of exchangeable electronics modules M1, M2 and which comprises software functionalities that can be enabled via a security code SC. According to the invention, it is verified whether one of the modules has been exchanged and whether one of the modules has a valid security code. A valid security code exists if the stored value of the security code matches a value calculated from the serial number of the field device. If a plausible serial number and a valid security code exist in one of the modules, the software functionalities are enabled according to the valid security code(s) SC. If no plausible serial number exists, all software functionalities that can be enabled via security codes are blocked.

公开(公告)号：EP1680716A2

公开(公告)日：2006-07-19

申请号：EP04797604.8

申请日：2004-11-04

Applicant: Endress + Hauser Flowtec AG

Inventor： BORST, Walter ,  ÜHLIN, Ralf ,  SEIFERT, Oliver ,  KOUDAL, Ole ,  POPP, Oliver

IPC: G05B19/042 ,  G05B19/418

CPC classification number: G05B19/0421 ,  G05B19/4185 ,  G05B2219/31094 ,  Y02P90/18

Abstract: The invention relates to a method for transmitting measuring values between two measuring transducers (M1,M2) transmitting digital signals according to the master/slave principle, in addition to analog signals, to a control system acting as a master, via two communication links (KOM1,KOM2).The digital signals are also transmitted via an additional communication link (KOM3) between the two measuring transducers and the incoming digital signals are analyzed in the receiver- measuring transducer according to at least one characteristic value of the transmitting measuring transducer in order to ascertain the measuring values required for evaluation in the receiver-measuring transducer.

公开(公告)号：EP1556670A1

公开(公告)日：2005-07-27

申请号：EP03750718.3

申请日：2003-10-20

Applicant: Endress + Hauser Flowtec AG

Inventor： HÖCKER, Rainer ,  KOUDAL, Ole ,  NIERLICH, Thomas

IPC: G01F1/32

CPC classification number: G01F1/3209 ,  G01F1/3272

Abstract: Disclosed is a vortex flow sensor (1; 1') for measuring the mass flow rate, volumetric flow rate, or flow velocity of a fluid which flows within a measuring tube (2; 2') comprising a tube wall (21; 21'). Said vortex flow sensor (1; 1') is provided with two temperature sensors (34, 35; 34', 35') which are disposed such that the vortex flow sensor (1) can also be used with fluids that would corrode the temperature sensors (34, 35; 34', 35'). A baffling member (4; 4') creating vortices and therefore pressure variations is arranged inside the measuring tube (2; 2'). A vortex sensor (3; 3') that responds thereto is inserted into a borehole (22; 22') of the wall (21) of the measuring tube (2; 2'), which is located downstream of the baffling member (4; 4'). Said vortex sensor (3; 3') comprises a sensor vane (31) which protrudes into the fluid and within a pocket hole (314) of which the temperature sensors (34, 35) are disposed. Alternatively, the temperature sensors (34', 35') can be disposed within a pocket hole (314') of the baffling member (4').

公开(公告)号：EP1556670B1

公开(公告)日：2018-09-26

申请号：EP03750718.3

申请日：2003-10-20

Applicant: Endress + Hauser Flowtec AG

Inventor： HÖCKER, Rainer ,  KOUDAL, Ole ,  NIERLICH, Thomas

IPC: G01F1/32

CPC classification number: G01F1/3209 ,  G01F1/3272

公开(公告)号：EP2798315B1

公开(公告)日：2018-04-25

申请号：EP12798233.8

申请日：2012-11-22

Applicant: Endress+Hauser Flowtec AG

Inventor： BRUDERMANN, Matthias ,  SIMON, Antoine ,  FINK, Nikolai ,  KOLLMER, Daniel ,  KOUDAL, Ole

IPC: G01D21/00 ,  H02M3/156 ,  G05B19/042

CPC classification number: H02M3/156 ,  G01D21/00 ,  G05B19/0423 ,  G05B2219/21119 ,  G05B2219/25428

公开(公告)号：EP2274582A1

公开(公告)日：2011-01-19

申请号：EP09741982.4

申请日：2009-04-23

Applicant: Endress+Hauser Flowtec AG

Inventor： ENGSTLER, Gernot ,  KOUDAL, Ole ,  MATT, Christian ,  POHL, Hans

IPC: G01F1/84 ,  G01F15/00 ,  G01F15/06 ,  G01F25/00

CPC classification number: G01F1/8431 ,  G01F15/00 ,  G01F15/061 ,  G01F25/0007

Abstract: The measuring apparatus comprises a measuring transducer (MW) that is accommodated at least partially in a, particularly grounded, housing (100) for detecting the at least one measured variable and a measuring apparatus electronics unit (ME) that is electrically connected at least at times to the measuring transducer. The measuring apparatus electronics unit (ME) comprises at least one measuring channel for detecting and processing at least one primary signal (s1) generated by the measuring transducer and a current measuring circuit (20B) for detecting electrical currents flowing inside the measuring apparatus. Furthermore it is provided that the current measuring circuit, at least at times during operation, detects particularly in a recurring manner an electrical leakage current (I
L ), which flows due to the potential difference (
Δ U
12 ) present at least at times between the housing and measuring apparatus electronics unit and an electrically conductive connection (R
F ) that is likewise present between the housing and measuring apparatus electronics unit and may be undesirable and/or formed by a coating that developed on the housing. Taking the detected leakage current into consideration, the measuring apparatus electronics unit further generates at least one, in particular digital, state value (Z), which presently represents an in particular erroneous operating state of the measuring apparatus.

公开(公告)号：EP0986739A1

公开(公告)日：2000-03-22

申请号：EP99917901.3

申请日：1999-03-29

Applicant: Endress + Hauser Flowtec AG

Inventor： DRAHM, Wolfgang ,  RIEDER, Alfred ,  WENGER, Alfred ,  KOUDAL, Ole

IPC: G01F1/84

CPC classification number: G01F1/8409 ,  G01F1/8413 ,  G01F1/8418 ,  G01F1/8422 ,  G01F1/849 ,  G01F1/8495

Abstract: The invention relates to a method which applies the clamp-on construction principle to coriolis-type mass flowmeters and detectors. A first and a second decoupling body (4, 5; 4', 5') with identical masses are fixed on a pipeline or a meter tube (1', 10, 10', 10'') at a distance L away from each other in order to define the segment of tube (11; 11'; 11'') which will form the measuring section. The masses of said decoupling bodies are significantly greater than the mass of the tube segment. For two meter tubes, clamping bodies (111, 112; 111', 112') are used. An exciter arrangement (12) is mounted in the centre of the tube segment. This exciter arrangement causes the tube segment to vibrate, the vibrations being of a third vibration mode with a frequency (f) of between 500 Hz and 1000 Hz. The distance L is calculated according to the following formula: L = 5,5 . 21/2 . (2πf)?-1/2 . {E(r4¿a-r4i)/(dM + dF)}?-1/4, (r¿a,ri = the outer or inner diameter of the tube segment, E = the elasticity modulus of the tube segment, dM = the density of the material of the tube segment multiplied by its cross-sectional area, dF = the average density of the fluid multiplied by the cross-sectional area of the clear width of the tube segment). Two sensor elements (13, 14) are fixed on the tube segment at the point where a deformation of the tube segment resulting from the interference from the pipeline during excitation in the third vibration mode has a first or a second zero point.

公开(公告)号：EP0668992B1

公开(公告)日：1999-01-27

申请号：EP94927561.4

申请日：1994-09-05

Applicant: Endress + Hauser Flowtec AG

Inventor： KOUDAL, Ole ,  WENGER, Alfred

IPC: G01F1/84

CPC classification number: G01F1/8409 ,  G01F1/8418 ,  G01F1/8468

Abstract: A mass flow sensor based on the Coriolis principle has a single helical measurement tube (13) that may be mounted for example by means of flanges (11, 12) in the path of a pipe having a given diameter (DN) through which the fluid to be measured flows and has largely balanced vibration modes independent from the density of the fluid, while maintaining its self-emptying capability in at least one mounting position. The vibrating part (13') of the measurement tube (13) is shaped as a circular cylindrical helix with a constant pitch and at least one winding. The corresponding end of an outer supporting tube (15) is secured to the measurement tube (13) next to the corresponding flange (11, 12) or to the corresponding flange itself. Only the corresponding end of an inner supporting element (14) is secured to the measurement tube (13) next to the corresponding flange (11, 12). Joining elements (16) that join the vibrating part (13') to the supporting element (14) are distributed along the vibrating part (13') and allow only those modes of vibration of the vibrating part (13') in which its centre line remains on the rest position cylindrical enveloping surface. Means are provided to excite the vibrating part (13') into resonant vibrations perpendicular to its centre line.

公开(公告)号：EP0668992A1

公开(公告)日：1995-08-30

申请号：EP94927561.0

申请日：1994-09-05

Applicant: Endress + Hauser Flowtec AG

Inventor： KOUDAL, Ole ,  WENGER, Alfred

IPC: G01F1

CPC classification number: G01F1/8409 ,  G01F1/8418 ,  G01F1/8468

Abstract: A mass flow sensor based on the Coriolis principle has a single helical measurement tube (13) that may be mounted for example by means of flanges (11, 12) in the path of a pipe having a given diameter (DN) through which the fluid to be measured flows and has largely balanced vibration modes independent from the density of the fluid, while maintaining its self-emptying capability in at least one mounting position. The vibrating part (13') of the measurement tube (13) is shaped as a circular cylindrical helix with a constant pitch and at least one winding. The corresponding end of an outer supporting tube (15) is secured to the measurement tube (13) next to the corresponding flange (11, 12) or to the corresponding flange itself. Only the corresponding end of an inner supporting element (14) is secured to the measurement tube (13) next to the corresponding flange (11, 12). Joining elements (16) that join the vibrating part (13') to the supporting element (14) are distributed along the vibrating part (13') and allow only those modes of vibration of the vibrating part (13') in which its centre line remains on the rest position cylindrical enveloping surface. Means are provided to excite the vibrating part (13') into resonant vibrations perpendicular to its centre line.