INDICATOR OF LEVEL OF EXPLOSION HAZARD OF GAS AND AIR MIXTURE Russian patent published in 2001 - IPC

FIELD: analysis of gas and air mixtures with catalytic oxidation. SUBSTANCE: invention can be used predominantly in systems of explosion warning and test of level of explosion hazard in corresponding objects. Technical result of invention consists in provision for stabilization of relative duration of output pulses and in reduction of power released across heating element of thermal catalytic converter during transient processes emerging with switching on of indicator. Technical result is achieved due to certain form of manufacture of generator of pulses of stable relative duration which incorporates pulse source, pulse blocking circuit, double input and single output pulse counter, single input and double output decoder of state of counter. EFFECT: stabilization of relative duration of output pulses. 2 cl, 3 dwg