EP 1086370 A1 20010328 - DETECTOR FOR ONE OR SEVERAL POLLUTING GASES AND USE THEREOF
Title (en)
DETECTOR FOR ONE OR SEVERAL POLLUTING GASES AND USE THEREOF
Title (de)
DETEKTOR VON UMWELTVERSCHMUTZENDEN GASEN UND SEINE VERWENDUNG
Title (fr)
DETECTEUR D'UN OU DE PLUSIEURS GAZ POLLUANTS ET SON UTILISATION
Publication
Application
Priority
- FR 9901395 W 19990611
- FR 9807383 A 19980612
Abstract (en)
[origin: FR2779826A1] The invention concerns a detector in the form of a field-effect transistor (13) arranged in a chamber (14). The transistor (13) electroattractive part is formed by a macromolecular material layer (4). The latter is exposed to a mixture containing at least one polluting gas, such as O3 and NO2, which causes it to be doped. A measuring device (10) comprises means for measuring the intensity of the current (IDS) which circulates between the transistor drain electrode (5) and source electrode (6) at least at one given time after the detector has been initialised, said at least polluting gas presence causing the layer (4) material to be doped depending on the concentration in polluting gas, the current (IDS)intensity and the intensity gradient being related to the concentration in polluting gas.
IPC 1-7
IPC 8 full level
G01N 27/30 (2006.01); G01N 27/414 (2006.01); G01N 27/416 (2006.01); G01N 33/00 (2006.01)
CPC (source: EP)
G01N 27/4141 (2013.01); G01N 33/0037 (2013.01); G01N 33/0039 (2013.01); Y02A 50/20 (2017.12)
Citation (search report)
See references of WO 9966319A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
FR 2779826 A1 19991217; FR 2779826 B1 20020531; AU 4049599 A 20000105; CA 2334849 A1 19991223; EP 1086370 A1 20010328; JP 2002518673 A 20020625; WO 9966319 A1 19991223
DOCDB simple family (application)
FR 9807383 A 19980612; AU 4049599 A 19990611; CA 2334849 A 19990611; EP 99923729 A 19990611; FR 9901395 W 19990611; JP 2000555087 A 19990611