What is the numeric standard for a four-in-one gas detector?
I believe everyone knows that the four in one gas detector, also known as the composite gas detector, is 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 standard requirements. So what is the numerical standard for a four in one gas detector?
Regarding the values of combustible gas methane in different concentration ranges:
1. Methane (CH4): Gas detector alarms when it exceeds 1.00%;
2. When the methane (CH4) value on the detector is below 1.00%, it is considered normal;
3. When the methane (CH4) value on the detector exceeds 5%, there is a risk of explosion when encountering bright light. Prohibit electric welding;
4. Methane (CH4) levels above 25% on the detector can cause headaches, dizziness, fatigue, lack of concentration, and accelerated breathing and heartbeat. Go outside for ventilation every 30 minutes or so.
Regarding the values of carbon monoxide in different concentration ranges:
Carbon monoxide (CO): Gas detector alarms when it exceeds 24ppm;
When the carbon monoxide (CO) on the detector exceeds 50pm, it is the maximum allowable content for adults to be exposed to it;
When carbon monoxide (CO) on the detector exceeds 200ppm, there may be a slight headache after 2-3 hours. Dizziness and heartbreak, go outside for ventilation every 30 minutes or so;
When the carbon monoxide (CO) on the detector exceeds 400ppm, immediately leave the site and report to the relevant responsible person.
Regarding the values of hydrogen sulfide in different concentration ranges:
Hydrogen sulfide (H2S): Gas detector alarms when it exceeds 10ppm;
When hydrogen sulfide (H2S) on the detector is between 50ppm and 100pa, there is a pungent odor. Go outside for ventilation every 30 minutes or so;
When the hydrogen sulfide (H2S) on the detector is between 100ppm and 200pm, the sense of smell becomes numb. Immediately leave the scene and report to the relevant responsible person;
When hydrogen sulfide (H2S) on the detector exceeds 200pm, poisoning occurs within one hour. Immediately leave the scene and report to the relevant responsible person.
Regarding the values of oxygen in different concentration ranges:
Oxygen (02): Gas detector alarms when it is below 18.0%;
The gas (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 below 15%, people will experience rapid breathing, headaches, dizziness, and fatigue and weakness throughout the body. Be slow in action, immediately leave the scene and report to the relevant responsible person.
