... automatic recognition of sensor trouble, function of high concentration gas above-norm of sensor6. Function of automatic detection ... gasCombustible vapour of liquids, including methane, LPG, coal gas and gasoline, etc., as well as poisonous and harmful ... required to be between 6mm- 9mmLectotype table for detected gas (part gas) ModelRangeLow alarm setting rangeHigh alarm setting rangeLow alarm ...