WorksheetsCombustible gas and detectors
Total questions: 15
Worksheet time: 8mins
Combustible gas is a typical cause of gas explosion accidents
True
False
_________ is not an example of combustible gases
Methane
Iso-Butane
Sarin
Hydrogen Sulphide
The _______ concentration of combustible gas mixed with air that can explode when is ignited is called Lower Explosive Limit (LEL).
Highest
Lowest
Middle
Diluted
Higher Explosive Limit is defined for highest concentration of combustible mixed with air that can explode when is ignited.
False
True
The range between LEL and UEL is known as the ________ for that gas or vapor.
Explosive range
Combustible limit
Combustible range
Explosive limit
Cosmos XP-3110 cannot detect
Methane
Hydrogen
Iso-Butane
Chemical gases
What is the LEL level (%) for Methane?
4%
5%
4.5%
3%
What is the LEL level (%) for Hydrogen?
1.8%
2%
4%
6%
What is the LEL level (%) for Iso-Butane?
2.5%
1.8%
3%
7%
Ventis Pro is a _________
Single gas detector
Double gas detector
Multiple gas detector
Chemical detector
Ventis Pro is mainly use for_________
Monitoring of Oxygen level, toxic & combustible gases
Detecting industrial toxic gases
Monitoring Chemical presence
Detecting radioactivity
The Ventis Pro is installed with two alarm intensities, high and low. When low alarm triggered, the visual signal is lighted in bright red colour.
True
False
Whenever Cosmos XP-3110 is turned on, it will automatically perform zeroing routine.
False
True
When you press the Light button on Cosmos XP-3110, the detector will illuminate for _______.
1 minute
40 seconds
30 seconds
10 seconds
This image which displays at Ventis Pro shows that _______
Carbon Dioxide is present and alerted at low alarm
Carbon Monoxide is present and alerted at high alarm
Carbon Monoxide is present and alerted at low alarm
Carbon Monohydrate is present and alerted at 100 ppm
