ELECTRICAL CONNECTIONS
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OPTISWIRL 4200
www.krohne.com
08/2016 - 4005002601- AD OPTISWIRL4200 Ex-II2GD R01
4.4 Grounding and equipotential bonding
In the case of compact devices and measuring units with flange connections, the connection may
be made via a conducting connection of the flow sensor to the pipeline. For compact measuring
devices and "sandwich" type measuring units, a separate conductor connected either to the
internal or external PA terminal must be provided to connect to the equipotential bonding.
For remote systems the connection of the flow sensor can either be made via the PA connection
in the signal converter terminal compartment or via the external PA connection.
CAUTION!
Equipotential bonding
Equipotential bonding
Equipotential bonding
Equipotential bonding
Vortex signal converters and flow sensors must be included in on-site equipotential bonding acc.
to EN 60079-14! They are connected to the PA terminals.
Ground connection compact version
1
Electrical grounding connection on connection piece between measuring sensor and signal converter.
2
Electrical grounding terminal in the housing
Ground connection remote version
1
Electrical grounding connection on measuring sensor
2
Electrical grounding connection on signal converter housing