5
Signet 9900 Conductivity Transmitter
Wiring
All wiring connections to the 9900 are made via removable terminals.
In general:
●
The Power, Loop and Open Collector plugs and the Relay Module plug accept
12 to 28 AWG wire. The Cond/Res Module plug accept 16 to 28 AWG wire.
●
Strip 7 mm (0.28 in.) of insulation from wire tips and tin bare ends to eliminate fraying.
●
Insert wire tip or ferrule completely into the terminal and secure with the screw.
●
Do not allow any AC leads that may be connected to the internal relays to come in
contact with low voltage wiring.
Wiring Tips:
●
Do not route the sensor, DC power, or 4 to 20 mA cables in conduit containing
AC power wiring. Electrical noise may interfere with sensor signal.
●
Routing the sensor cable in grounded metal conduit can help prevent electrical noise
and mechanical damage.
●
Seal the cable entry points to prevent moisture damage.
●
Only one wire should be inserted into a terminal.
●
Splice double wires outside the terminal or use appropriate wire ferrule,
not to exceed 2 mm (0.08 in) diameter.
System Start-up: Step 2
Wire the transmitter for all connections with the power off.
Keep any 4 to 20 mA and relay-actuated output devices that are connected
to it offl ine at this time.
●
Minimize handling of plug-in modules to reduce the possibility of
damage due to ESD.
●
Handle modules by the edges. Never touch any exposed circuitry or
contacts.
●
Wear an anti-static wristband or stand on an anti-static mat, or
keep one hand touching a properly grounded pipe or other properly
grounded piece of metal when handling modules.
CAUTION:
Avoid Electrostatic Discharge (ESD)
Tools Required
●
Phillips screwdriver
●
Flat-head screwdriver
●
Wire strippers
For Field Mount
installations, refer to
the wiring diagram
inside the Field
Mount housing.
Next step: System Setup (Step 3).
