Control Unit Mains Supply Connections - Ametek Thermox WDG Insitu User Manual

WDG sEnsoR tYPE
WDG-IV
(O2 ONLY)
Figure 3-16. Required sensor cable wiring (minimum acceptable grades).
3-14 | Thermox Series 2000 WDG Insitu Analyzer
•
For AC mains supply wiring, use between 12 and 14 American Wire Gauge
(AWG) or equivalent metric between 3.3 mm
wiring, use 18 to 22 AWG (0.82 mm
Figure 3-16 shows the recommended sensor cable types for various WDG-
style sensors.
•
Use the conduit entry point closest to the connections you are making. Do not
add any additional conduit entry holes!

Control Unit Mains supply Connections

Do not run control unit AC mains supply wiring in the same conduit
with other AC line power wires. By keeping this wiring separated,
you prevent transient signals from reaching the control unit.
The Series 2000 control unit can operate using between 85 to 250 volts AC, 47 to
63 Hz. There is no power switch or circuit breaker on the control unit, and it must
be protected by installing it on a circuit-protected line, maximum 15 amperes,
with a switch or circuit breaker in close proximity to the control unit and within
easy reach of an operator. Mark the switch or circuit breaker as the control unit
disconnecting device.
Mains supply connections to the control unit are as follows:
Line - Line connection
Neutral - Neutral connection (USA)
Chassis Stud - Equipment ground (protective conductor)
Use the 1/2" conduit entry hole in the control unit for AC mains supply wiring.
Use the chassis stud next to the 1/2" conduit entry hole for equipment ground
(protective conductor).
AC (L) and (N) markings are provided by the terminal block for connection of
AC power. These markings are for reference purposes only, such as for use on
system wiring diagrams, etc. The system/product has or needs no specific LINE
2
to 0.33 mm
2
nUMBER oF tWIstED
PaIRs nEEDED
4
and 2.1 mm . For all signal
2
). For sensor connections,
2
GaUGE oF WIRE
22 AWG (to 250 ft)
18 AWG (to 1000 ft)