KROHNE H250 M40 ATEX II2D Ex t-II2G Ex d EN - Manual (Page 13)

INSTALLATION
3
13
H250 M40
www.krohne.com 07/2012 - 4002069601 - MA H250/M40-Ex-II2GD-AD R01
3.2 Special conditions
Equipotential bonding
Variable area flowmeters must be included in the equipotential bonding of the hazardous area.
Electronics compartment lock
Lock the dustproof and/or flameproof electronics compartment of the variable area flowmeter
during operation. First tighten the cover by hand. Then tighten the cover again by about 90°. The
cover for the electronics compartment is secured by means of a lock. Use an WS3 Allen key to
turn the screw.
No waiting period is necessary prior to opening the electronics compartment.
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