A vapor sample is drawn into the combustible gas indicator shown in the illustration. The needle deflects to the explosive range of the scale and then returns to rest at 20%. What does this indicate? See illustration SF-0002.
A
The indicator is improperly calibrated.
B
The concentration of combustible vapor in the sample is twenty percent.
C
The concentration of combustible vapor in the sample is twenty percent of its lower explosive limit.
D
The concentration of combustible vapor in the sample is above the upper explosive limit.
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Question 1 / 205eccef9ebacbc34ba4d465a9
Question 1 of 205eccef9ebacbc34ba4d465a9
A vapor sample is drawn into the combustible gas indicator shown in the illustration. The needle deflects to the explosive range of the scale and then returns to rest at 20%. What does this indicate? See illustration SF-0002.
A vapor sample is drawn into the combustible gas indicator shown in the illustration. The needle deflects to the explosive range of the scale and then returns to rest at 20%. What does this indicate? See illustration SF-0002.