Title:
APPARATUS FOR PREVENTION OF FALSE ALARMING IN GAS CONCENTRATION DETECT ORS BY CONTINUOUS COULOMETRIC TITRATION METHOD
Document Type and Number:
Japanese Patent JPS5223398
Kind Code:
A
Abstract:
PURPOSE: Occurence of false alarming is prevented by so arranging the apparatus that a time relay inserted between the power supply and the alarm circuits causes the alarm circuit to operate upon lapse of several seconds or some ten seconds after switching on of power supply.
Inventors:
ITOU TADAHIRO
Application Number:
JP9992675A
Publication Date:
February 22, 1977
Filing Date:
August 18, 1975
Export Citation:
Assignee:
DENKI KAGAKU KEIKI KK
International Classes:
G01N27/42; G01N27/44; (IPC1-7): G01N27/44
Domestic Patent References:
| JPS4840394U | 1973-05-22 | |||
| JPS5017342U | 1975-02-25 | |||
| JPS4853793A | 1973-07-28 | |||
| JPS4853797A | 1973-07-28 |