KROHNE OPTISWIRL 4070 ATEX II2G EN - Manual (Page 12)

3
INSTALLATION
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OPTISWIRL 4070
www.krohne.com 04/2013 - 4000077105 MA OPTISWIRL4070 II2G AD R05 en
3.2 Special Conditions
Equipotential bonding
Vortex flowmeter converters must be included in the equipotential bonding of the hazardous
area.
Electronics compartment lock
The vortex flowmeter's flameproof electronics compartment must be closed during operation.
The cover of the electronics compartment is secured by a lock. An SW3 hexagon socket screw is
used for the safety screw . With temperature classes T6 and T5, a waiting time of 1 minute must
be observed prior to opening. For temperature classes T4...T1 the waiting time is not needed.
INFORMATION!
Lock on terminal compartment
Lock on terminal compartment Lock on terminal compartment Lock on terminal compartment
The terminal compartment may be opened in hazardous areas when measuring and carrying out
adjustments.
AD_OPTISWIRL4070_II2G_R05_en_077105_PRT.book Page 12 Tuesday, April 23, 2013 2:17 PM