Question: 2 8 . I am about to use a 4 - gas meter with % LEL, % O 2 , H 2 S , and

28 .

I am about to use a

4 -

gas meter with

%

LEL,

%

2,

2

,

and CO sensors

.

The meter has a

12

ft hose line attached. What is a quick field test you can do to bump the instrument AND determine the time it takes for the sampled air to travel to hose to the sensors

?

You do not have any cal

/

bump gas. It is just you.

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