Global patent index - EP 1036312 A1

EP 1036312 A1 2000-09-20 - DEVICE FOR MEASURING THE PARTIAL PRESSURE OF GASES DISSOLVED IN LIQUIDS

Title (en)

DEVICE FOR MEASURING THE PARTIAL PRESSURE OF GASES DISSOLVED IN LIQUIDS

Title (de)

VORRICHTUNG ZUR MESSUNG DES PARTIALDRUCKES VON IN FLÜSSIGKEITEN GELÖSTEN GASEN

Title (fr)

DISPOSITIF POUR MESURER LA PRESSION PARTIELLE DE GAZ DISSOUS DANS DES LIQUIDES

Publication

EP 1036312 A1 (DE)

Application

EP 97928234 A

Priority

  • DE 19624844 A
  • EP 9703177 W

Abstract (en)

[origin: WO9749985A1] The present invention relates to a device for measuring the partial pressure of gases dissolved in liquids. Said device contains (a) a measuring point (15) which is partially separated by a gas-permeable membrane (11) permeable to the gas to be determined; (b) a light emission source (6) for producing a light ray interacting with the liquid in the measuring point (15) and having a wave length which is absorbed by the gas to be determined; and (c) a measuring arrangement (7) for determining the light leaving the measuring point (15). Said device is characterised in that (d) the measuring point (15) is in contact with the interface of a photoconductive element (14), and (e) the light is guided through said element (14) in such a manner that total reflection thereof is reduced at the interface.

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

G01N 21/55; G01N 21/61; G01N 21/85

IPC 8 full level (invention and additional information)

G01N 21/27 (2006.01); C12M 1/34 (2006.01); G01N 21/552 (2014.01); G01N 21/61 (2006.01); G01N 33/00 (2006.01)

CPC (invention and additional information)

G01N 21/8507 (2013.01); G01N 21/552 (2013.01); G01N 21/61 (2013.01); G01N 33/0011 (2013.01); C12M 41/32 (2013.01); C12M 41/40 (2013.01)

Citation (search report)

See references of WO 9749985A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9749985 A1 19971231; AU 3260497 A 19980114; AU 732530 B2 20010426; CA 2259275 A1 19971231; EP 1036312 A1 20000920; JP 2000512758 A 20000926

INPADOC legal status

2005-05-18 [18R] REFUSED

- Ref Legal Event Code: 18R

- Effective date: 20041226

2003-11-05 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20030918

2000-09-20 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19990412

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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