Grounding - ABB AquaMaster4 Manual

A Q U A M A S T E R 4 | E L E C T R O M A G N E T I C F LO W M E T E R T R A N S M I T T E R | O I/ F E T4 0 0 - E N R E V. B

Grounding

IMPORTANT (NOTE)
The grounding arrangements shown in Figure 13 to
Figure 15 are applicable to both cathodic and non-
cathodic protected installations.
Mains power supply (option)
Earth (ground) rod (mains only)
Figure 13 AquaMaster4 transmitter mounted in a
chamber – flanged sensor
Mains power supply (option)
Figure 14 AquaMaster4 transmitter mounted in a cabinet –
flanged sensor
Mains power supply (option)
(ground) rod
(mains only)
Figure 15 AquaMaster4 transmitter mounted in a cabinet –
insertion sensor
Earth
(ground) rod
(mains only)
E
2
Insulator
Figure 16 Cathodic protected installations with different
cathodic potential generators
Earth
Bond probe
to pipe
IMPORTANT (NOTE)
The grounding arrangements shown in Figure 16 are
applicable ONLY to:
• cathodic protected installations
• installations where E2 and E3 are different to E1
CAUTION – DAMAGE TO EQUIPMENT
Incorrect installation will result in fault currents
flowing through the meter resulting in unstable
readings.
>50D
E
1
Conductive pipe
Cathodic potentials E
MUST be equal
13
>50D
E
E
3
1
Insulator
1