Title:
【発明の名称】酸化ガリウムをベースとするセンサーを用いてのメタンの検出法及びメタン濃度の測定法
Document Type and Number:
Japanese Patent JP2960696
Kind Code:
B2
Abstract:
Process for detecting CH4 with a Ga2O3 sensor comprises:(a) operating the sensor at a 1st temperature (01) and whose signal (Gs) is compared with a 1st threshold value (SWEtOH); (b) in case the signal (Gs) is below the 1st threshold value, repeating step (a), and if exceeding the 1st threshold value, carrying out step (c); (c) increasing the sensor temperature and measuring the corresponding sensor signals (G(t1), G(t2)) to two different time points (t1, t2); (d) forming the ratio from signals (G(t2)) and (G(t1)) and comparing the ratio with the 2nd threshold value (SWCH4); and (e) in case the ratio exceeds the 2nd threshold value, repeating step (a) and in case the 2nd threshold value is not exceeded, CH4 is present.
Inventors:
NORUBERUTO RAITOMAIAA
MAKUSHIMIRIAN FURAISHAA
HANSU MAIKUSUNAA
MAKUSHIMIRIAN FURAISHAA
HANSU MAIKUSUNAA
Application Number:
JP11681197A
Publication Date:
October 12, 1999
Filing Date:
May 07, 1997
Export Citation:
Assignee:
JIIMENSU AG
International Classes:
G01N27/12; G01N27/04; G01N33/00; (IPC1-7): G01N27/12
Domestic Patent References:
| JP8313470A | ||||
| JP5437800A | ||||
| JP51140694A |
Attorney, Agent or Firm:
Toshio Yano (2 outside)