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Model 675 Series Submersible Level Transmitter
2.5
Wiring
WARNING:
Do not connect any wires while AC Power input is applied.
2.5.1 Surge Protection
Surge protectors are available as an option item (see Parts & Accessories
in Section 3 of this manual). It is strongly recommended to protect from
secondary surges and lightning on outdoor installations. Install in accordance
with the applicable drawing that is supplied with the surge protector and
the following instructions:
1. Lightning protection devices should be placed as close to the meter or
2. If the distance between the meter and transmitter, or meter and recorder
3. Use No. 8 AWG ground wire or better from protector.
4. Keep ground wire less than one foot long and tie to a suitable ground rod
5. Install protectors in weather-tight enclosures.
6. Run signal lines shielded and away from power lines.
7. Mount the fused switch panel as close to the meter as possible. Wire
8. Lead lines for 110 Vac and 220 Vdc protectors should be cut as short as
Transmitter Wiring Identification
transmitter as possible and wired in accordance with Local Electrical
Codes in an approved watertight enclosure.
is less than 100 ft., only one protector per line is needed.
or metal frame ground. Surge capability is only as good as the grounding
method. All ground connections must be installed.
according to the Local Electrical Code.
practical.
Figure 2-3
6
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