AQUA M A STE R4
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EL EC T R O M AG N E T I C FLO W M E T ER I N SER T I O N SEN S O R | O I/FE W4 0 0/A P - EN R E V. B
15
Connections
DANGER – SERIOUS DAMAGE TO HEALTH
• The mains/line-powered transmitter option is not
fitted with a switch – an isolator such as a switch
or circuit breaker conforming to local safety
standards must be fitted to the final installation.
It must be fitted in close proximity to the
transmitter, within easy reach of the operator and
marked clearly as the isolator for the transmitter.
• Remove all power from supply, relay, any powered
control circuits and high common mode voltages
before accessing or making any connections.
• All connections to secondary circuits must have
insulation to required local safety standards. After
installation, there must be no access to live parts.
Use screened cable for signal inputs and relay
connections. Route signal leads and power cables
separately, preferably in an earthed (grounded)
flexible metal conduit.
WARNING – BODILY INJURY
• If the transmitter is used in a manner not
specified by the Company, the protection
provided by the equipment may be impaired.
• Replacement of the internal battery must be
carried out by an approved technician only.
• The transmitter conforms to Installation Category
II of IEC 61010.
• All equipment connected to the transmitter’s
terminals must comply with local safety standards
(IEC 60950, IEC61010-1).
Grounding
IMPORTANT NOTE
Only to be installed in metallic pipelines for electrical
screening.
Bond
insertion
sensor
to pipe
Figure 16 Grounding for
electrical screening
Cable connections at the remote insertion sensor
• If the insertion sensor is ordered with cable, the cable is
potted at the (remote) insertion sensor and is connected to
the transmitter using the supplied plug.
• If the insertion sensor is ordered without cable, the insertion
sensor is supplied part-potted (up to the terminal block).
Connections must then be made and the enclosure must be
fully potted.
Insertion sensor terminal box connections
DANGER – SERIOUS DAMAGE TO HEALTH
• Make connections only as shown in Figure 17.
• Maintain environmental protection at all times.
• Conduit connections must provide cable entry
sealing.
To make insertion sensor terminal connections:
1
Unscrew and remove the insertion sensor terminal housing
cover.
2
Remove foil screens.
3
Twist the three screen wires together and sleeve them.
4
Twist cable pairs together.
5
Power up and check all connections.
6
Pot the terminal block (see page 16).
7
Refit the cover.
Figure 17 Cable connections at insertion sensor terminal block
Cut cables to
60 mm (2.35 in)
7 Violet
6 Blue
5 Yellow
4 Orange
3 Yellow/
Green
2 Red
1 Brown
