Ametek Thermox 2000 ATEX Series User Manual page 118

If you have the combustibles option, you are then prompted to enter
the combustibles span gas value:
Comb Span = xxxx YY
New Value?
4. Enter the combustibles span gas value, then press the Enter key. If
you want to keep the current combustibles span gas value un-
changed, press the Enter key without entering a value.
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