Dynasonics Fusion Water Flow Meter - Manual (Page 11)

11
3. ELECTRICAL CONNECTIONS
The FUSION flow meter is equipped with three threaded conduit
holes located on the bottom of the flow meter enclosure that are
suitable for routing of field wiring. A sealed cord grip or sealed
threaded conduit connection should be utilized to retain the
NEMA 4 integrity of the flow meter enclosure. Failure to do so will
void the manufacturer’s warranty and can lead to product failure.
For hazardous area installation, see drawing number D091-1054-
002 located in the back of this manual. For non-hazardous
location installations, flow meter power and output signals can be
carried by a single cable with multiple conductors. Select a 20-24
AWG shielded cable with an external jacket suitable for the
installation environment and appropriate number of conductors.
The number of conductors can range from 3-11 depending on the
number of input/output connections that will be utilized.
Wiring methods and practices are to be made in accordance
with the NEC—National Electrical Code ® —and/or other local
ordinances that may be in effect. Consult the local electrical
inspector for information regarding wiring regulations.
When making connections to the field wiring terminals inside of
the flow meter, strip back the wire insulation approximately 0.25
inch (6 mm). Stripping back too little may cause the terminals to
clamp on the insulation and not make good contact. Stripping
back too much insulation may lead to a situation where the wires
could short together between adjacent terminals. Wires should be
secured in the Field Wiring Terminals using a screw torque of
between 0.5 and 0.6 Nm.
!
IMPORTANT NOTE:
Must be operated by a Class 2 supply
suitable for the location.
IMPORTANT NOTE:
Do not connect or disconnect either power or
outputs unless the area is known to be non-
hazardous.
!
!