Combustible gas indicators measure the concentration of combustible gases as a percentage of the lower explosive limit of the gas. If the hydrocarbon content of the sample exceeds the upper explosive limit __________.

Question

Accepted Answer

the needle will move to the maximum reading and return back to zero

Answer

the needle will rise slowly to and remain at the maximum reading

Answer

the needle will move rapidly to and remain at the maximum reading

Answer

it will not be detected

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