ONICON FB-3500 Series - Manual (Page 20)

11451 Belcher Road South, Largo, FL 33773 • USA • Tel +1 (727) 447-6140 • Fax (727) 442-5699 • [email protected]
FB-3500 Bi-Directional Insertion Electromagnetic Flow Meter Manual 05/14 - 0718-3
Page 20
3.5 WIRING CONNECTIONS
Make all connections to the attached 10ft cable.
The most common causes of electronic failures are miswired connections during installation.
When adding additional cable, record and carefully document any substitution of wire colors.
Additional cable may be purchased from ONICON that will allow you to maintain the existing
color coding.
All electrical connections to the FB-3500 must be made through the 10ft cable provided with the
meter. This cable is not designed to be removed in the field, and any attempt to do so will
compromise the weather tight integrity of the enclosure.
The cable provided contains 22 AWG color-coded wires for signal and power and a separate
18 AWG green/yellow earth wire.
Special care is required to ensure that the FB-3500 is connected to earth through the green/yellow
earth wire. This connection is required to prevent random electrical noise from interfering with
the operation of the meter. (See section 3.5.2 for details.)
CAUTION
Do not attempt to remove the existing cable or to remove the factory installed connection fitting.
Doing so will compromise the weather tight integrity of the enclosure and may void the warranty.
CAUTION
Only qualified personnel should attempt to make electrical connections to the FB-3500. Failure
to properly connect the FB-3500 power, signal or earth connections may result in damage to the
FB-3500 and/or to associated peripheral equipment.
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