Will the 4-in-1 gas detector alarm when it encounters hydrogen?
Gas detector is a gas leakage concentration detection instrumentation tools, the same can be known, four-in-one gas detector is able to detect four gases at the same time: combustible gases, oxygen, hydrogen sulfide and carbon monoxide, detection of a number of complex production workshops and other workplaces where there may be a variety of hazardous gases, regardless of which gas exceeds the standard, the four-in-one gas detector will be the first time to send out a sound, flash and vibration alarm. So will the 4-in-1 gas detector alarm when it encounters hydrogen?
Four-in-one gas alarm encountered hydrogen whether the alarm needs to be based on whether the alarm instrument is equipped with internal sensors to detect hydrogen, and hydrogen concentration in the environment to reach or exceed the alarm value set by the alarm instrument before the instrument will alarm, otherwise the instrument will not alarm.
Gas alarm instrument used to detect gas components for the gas sensor, in the instrument factory manufacturing has been determined by the gas sensor to detect the type of gas, can not be changed, a sensor can only detect a gas. General four-in-one gas alarm instrument configured with four gas sensors, such as the need to detect hydrogen, should be configured in the alarm instrument hydrogen sensor, in order to measure the hydrogen concentration changes. If there is no hydrogen sensor installed in the alarm, it will not be able to detect hydrogen in the environment.
The alarm value will be set before the gas alarm instrument is put into use, and the instrument will send out an alarm signal only when the gas in the environment reaches or exceeds the set alarm value. No special circumstances, the alarm value setting of the instrument needs to follow the same national standard. Hydrogen is generally categorized as a combustible gas, first of all, according to the GB 50058-2014 "Explosive Hazardous Environment Electric Power Installation Setting Code" in the query, the explosion of hydrogen upper and lower limits of 4.00%Vol and 75.00%Vol; if you need to detect toxic gases need to be based on the "occupational exposure limits of factors in the workplace to determine the occupational exposure limit value. Then according to the "petrochemical combustible gases and toxic gases detection and alarm design standards" in the provisions of the gas alarm instrument to set the first level of the alarm value and the second level of the alarm value.
