16 Revision 02.A.004/2021.06
7.2. Grounding
The flowmeter must be earthed according to the rules in force at the place of installation.
The lack of functional grounding can cause significant disturbances in the
measurements.
Marking of the connection point of the functional earth of the flowmeter.
Marking of the protective ground connection in the transmitter housing.
7.2.1. Connecting of the transmitter with the option of using local HART communication
Protective grounding is an element ensuring safety against electric shock in ac-
cordance with the standards and must always be connected.
1. Screw M5.
2. Spring washer M5.
3. Serrated washer
wg DIN 6797 J – M5.
4. The cable is terminated with a crimp terminal
with an eyelet M5.
5. Housing.
Figure 9. Location and method of connecting the protective earth to the transmitter housing.
Use a power cable suitable for the cable gland, with certified cables with a working voltage
of 300/500 V.
Figure 10. Proper preparation of the power cable.
In order to maintain safety, the power cable should be prepared in such a way that the earth
wire (yellow-green) is longer than the other wires by min. 20mm. The end of the earthing
wire should be extended with a tip with an eyelet to the M5 screw. Crimp the end on the
earthing conductor with a cable crimper.
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