KROHNE H250 M9 ATEX II2G Ex i EN - Manual (Page 14)

5
OPERATION
14
H250 M9
www.krohne.com 11/2012 - 4000345604 MA H250/M9-Ex-II2G-AD R06 en
Operation
5.1 Start-up
Start-up is only permitted when the variable-area flowmeter:
• is correctly installed in the system and connected.
• has been checked for the proper state with regard to its installation and connection
requirements.
The user of the system must be have it checked before start-up in compliance with the national
regulations for checks before start-up.
5.2 Operation
Variable area flowmeters must be operated in such a way that they remain within the maximum
and minimum permissible temperatures and pressures and the electrical limit values.
Variable area flowmeters may only be operated if the equipment parts necessary for safety are
effective in the long run, and are not rendered inoperable during operation.
Adjusting the limit switch during operation is permitted. To do so, remove the housing cover.
Close the housing cover immediately after adjusting the limit switch.
For more information see chapter "Dismantling"
CAUTION!
Potential risks of sparking caused by pressure surges, external impacts or friction must be
avoided especially for Titanium measuring cones.
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