What is the numerical standard of four-in-one gas detector?
As we all know, the four-in-one gas detector, also known as the composite gas detector, can be mainly used for routine detection of four gases, namely, combustible gas EX, carbon monoxide CO, hydrogen sulfide H2S and oxygen O2. However, when detecting these gases, the four-in-one gas detector also has relevant data standards. So what is the numerical standard of four-in-one gas detector? The following Yiyuntian Xiaobian introduces you:
Values in different concentration ranges of combustible gas methane;
1. Methane (CH4): When it exceeds 1.00%, the gas detector will give an alarm;
2. When the methane (CH4) value on the detector is lower than 1.00%, it is normal;
3. When the methane (CH4) value on the detector exceeds 5%, it is in great danger of explosion. Electric welding is prohibited;
4. When the methane (CH4) value on the detector exceeds 25%, it can cause headache, dizziness, fatigue, inattention, and accelerated breathing and heartbeat. Go outside for air every 30 minutes or so.
Values in different concentration ranges of carbon monoxide:
Carbon monoxide (CO): When it exceeds 24ppm, the gas detector will give an alarm;
When the carbon monoxide (CO) on the detector exceeds 50pm, it is a large content allowed for adults to be in it;
When the carbon monoxide (CO) on the detector exceeds 200ppm, there will be a slight headache after (2-3) hours. Dizziness and sadness, go outside for air every 30 minutes or so;
When the carbon monoxide (CO) on the detector exceeds 400ppm, leave the scene immediately and report to the relevant responsible person.
Values in different concentration ranges of hydrogen sulfide:
Hydrogen sulfide (H2S): When it exceeds 10ppm, the gas detector will give an alarm;
When the hydrogen sulfide (H2S) on the detector is 50 ppm–100 Pa, it has a pungent smell. Go outside for air every 30 minutes or so;
When the hydrogen sulfide (H2S) on the detector is 100 ppm–200 pm, the sense of smell is paralyzed, so leave the scene immediately and report to the relevant responsible person;
When the hydrogen sulfide (H2S) on the detector exceeds 200pm, it will be poisoned within one hour. Leave the scene immediately and report to the relevant responsible person.
Values for different oxygen concentration ranges:
Oxygen (02): When it is lower than 18.0%, the gas detector will give an alarm;
The O2 value on the detector is 20.9%, which is the normal oxygen content in the air.
When the oxygen (O2) value on the detector is lower than 15%, people will have shortness of breath, headache, dizziness and fatigue. If the action is slow, leave the scene immediately and report to the relevant responsible person.
