Global Patent Index - EP 1005635 A2

EP 1005635 A2 2000-06-07 - PHOTOMETER WITH NON-DISPERSIVE INFRARED ABSORPTION SPECTROSCOPY (NDIR) FOR MEASURING SEVERAL CONSTITUENTS

Title (en)

PHOTOMETER WITH NON-DISPERSIVE INFRARED ABSORPTION SPECTROSCOPY (NDIR) FOR MEASURING SEVERAL CONSTITUENTS

Title (de)

NDIR-FOTOMETER ZUR MEHRKOMPONENTENMESSUNG

Title (fr)

PHOTOMETRE A SPECTROSCOPIE D'ABSORPTION NON DISPERSIVE DANS L'INFRAROUGE (NDIR) POUR LA MESURE DE PLUSIEURS CONSTITUANTS

Publication

EP 1005635 A2 (DE)

Application

EP 98951168 A

Priority

  • DE 9802412 W
  • DE 19735719 A
  • DE 19752508 A

Abstract (en)

[origin: US6452182B1] A photometer for measuring gas components. The photometer has an infrared radiator with radiator modulation, a measuring cell with a measurement and comparison chamber, and a detector which absorbs optopneumatically onto the gas component X, that is filled with gas component X. In order in the case of a photometer of this type to render it possible for a plurality of gas components to be measured with high accuracy and the smallest possible outlay in apparatus, at least one further detector is arranged downstream of the first detector. For the purpose of measuring the gas component Y the further detector is filled with its isotope Y*, and the first detector is optically transparent with regard to the further gas component Y* to be measured or the characteristic absorption bands thereof.

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

G01N 21/00

IPC 8 full level (invention and additional information)

G01N 21/37 (2006.01); G01N 21/35 (2006.01); G01N 21/61 (2006.01)

CPC (invention and additional information)

G01N 21/3504 (2013.01); G01N 21/61 (2013.01)

Citation (search report)

See references of WO 9909391A3

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

US 6452182 B1 20020917; EP 1005635 A2 20000607; JP 2001516016 A 20010925; WO 9909391 A2 19990225; WO 9909391 A3 19990514

INPADOC legal status


2005-09-14 [18R] REFUSED

- Effective date: 20050718

2001-06-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010420

2000-06-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000127

2000-06-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): DE FR GB IT