30  CI/FSV/FSS/430/450-EN  Rev. G | VortexMaster FSV430, FSV450 SwirlMaster FSS430, FSS450 
 
 
5.6.2  Cable entries 
The electrical connection is made via cable entries with a 
1/2" NPT or M20 x 1.5 thread. 
 
Cable entries with an M20 x 1.5 thread 
Devices with an M20 x 1.5 thread are supplied with factory-
installed cable glands and sealing plugs. 
 
Cable entries with a 1/2" NPT thread 
The supplied transport sealing plugs do not have IP rating 4X / 
IP67 and are not approved for use in potentially explosive 
atmospheres. 
The transport sealing plugs must be replaced with suitable 
cable glands or sealing plugs during device installation. 
When selecting the cable glands or sealing plugs, make sure 
they have the required IP rating and explosion protection! 
To offer IP rating 4X / IP67, the cable glands / sealing plugs 
must be screwed in using a suitable sealing compound. 
 
 
 
5.6.3  Grounding 
 
Fig. 30:  Grounding terminals 
1 Integral mount design and sensor in remote design  
2 Transmitter in remote mount design  3 Grounding terminal 
 
For the grounding (PE) of the transmitter or the connection of 
a protective earth, a connection is available both on the 
exterior of the housing and in the connection space. Both 
connections must be galvanically connected to one another.  
These connection points can be used if grounding or the 
connection of a protective conductor is prescribed by national 
regulations for the selected type of supply or the type of 
protection used. 
 
NOTICE
  
In order to avoid external influences on the measurement, it 
is imperative to ensure that the transmitter and the separate 
flowmeter sensor are properly grounded. 
 
1.  Loosen the screw terminal on the transmitter housing or 
on the housing of the VortexMaster / SwirlMaster. 
2.  Insert the forked cable lug for functional grounding 
between the two metal tabs and into the loosened 
terminal. 
3.  Tighten the screw terminal. 
 
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