Global Patent Index - EP 1032807 A1

EP 1032807 A1 2000-09-06 - A LEVEL DETECTOR

Title (en)

A LEVEL DETECTOR

Title (de)

FÜLLSTANDSAUFNEHMER

Title (fr)

DETECTEUR DE NIVEAU

Publication

EP 1032807 A1 (EN)

Application

EP 98953121 A

Priority

  • SE 9801959 W
  • SE 9703980 A

Abstract (en)

[origin: WO9926044A1] A detector for detecting the level of a boundary surface or interface between a first medium (A) and a second medium (B) in a tank (1) includes a radiation emitter (3) and a radiation sensor. A reflective device (2) is disposed in the tank for irradiation by the emitter (3). The reflector device (2) is chosen to change a property of the radiation emitted by the emitter when reflecting said radiation, in relation to the extent to which the two medium (A, B) are present at the reflective device (2). The sensor (4) is adapted to sense said change as an indication of the position of the interface surface relative to the reflective device, which is retroreflexive and which is chosen to impart essentially different angles of scatter to the reflected radiation depending on whether said reflection takes place in the presence of one of said media (A, B).

IPC 1-7 (main, further and additional classification)

G01F 23/292

IPC 8 full level (invention and additional information)

G01F 23/292 (2006.01)

CPC (invention and additional information)

G01F 23/292 (2013.01); G01F 23/2928 (2013.01)

Citation (search report)

See references of WO 9926044A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9926044 A1 19990527; AU 1057599 A 19990607; EP 1032807 A1 20000906; SE 511605 C2 19991025; SE 9703980 D0 19971030; SE 9703980 L

INPADOC legal status


2006-11-08 [18W] WITHDRAWN

- Effective date: 20060929

2006-09-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20060810

2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000412

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE