Yokogawa IR400 - Manual (Page 99)

9 - 4
IM 11G02N01-01E
Span gas ; For other than O
2
measurement, each
sample gas having
concentration 90 to
100% of its measur-
ing range.
For O
2
measure-
ment, O
2
gas of 1 to 2
vol%.
6. Installation Requirements
• Indoor use. (Select a place where the equipment
does not receive direct sunshine, draft/rain or ra-
diation from hot substances. If such a place can-
not be found, a roof or cover should be prepared
for protection.)
• Avoide a place where receives heavy vibration.
• Select a place where atmospheric air is clean.