EP 1005635 A2 20000607 - 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
Application
Priority
- DE 9802412 W 19980812
- DE 19735719 A 19970818
- DE 19752508 A 19971127
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
IPC 8 full level
G01N 21/35 (2006.01); G01N 21/37 (2006.01); G01N 21/61 (2006.01)
CPC (source: EP US)
G01N 21/3504 (2013.01 - EP US); G01N 21/61 (2013.01 - EP US)
Citation (search report)
See references of WO 9909391A2
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
US 6452182 B1 20020917; EP 1005635 A2 20000607; JP 2001516016 A 20010925; WO 9909391 A2 19990225; WO 9909391 A3 19990514
DOCDB simple family (application)
US 48598700 A 20000217; DE 9802412 W 19980812; EP 98951168 A 19980812; JP 2000510007 A 19980812