Ametek CEM/Humox, User Manual

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3-10 | Thermox CEM/Humox Analyzer
• For AC mains supply wiring, use between 12 and 14 American Wire Gauge
(AWG) or equivalent metric between 3.3 mm
2
and 2.1 mm
2
. For all signal wir-
ing, use 18 to 22 AWG (0.82 mm
2
to 0.33 mm
2
).
• Use the conduit entry point closest to the connections you are making. Do not
add any additional conduit entry holes!
• You may use 1” conduit with a 3/4” adapter at the entry to the Series 2000
controller for signal and sensor wiring.
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 Hertz. There is no power switch or circuit breaker on the control unit. We sug -
gest you protect it 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.
AC (L) and (N) markings are provided by the terminal block for con-
nection of AC power.
These markings are for reference purposes only such as for use on sys-
tem wiring diagrams etc. The system/product has or needs no specific
LINE or NEUTRAL connection for any function, safety or otherwise.
Figure 3-10.
Recommended sensor
cable wiring (minimum
acceptable grades).
SENSOR TYPE NUMBER OF TWISTED
PAIR NEEDED
GAUGE WIRE
CEM/O2 4 22 ( to 250 ft)
18 (250 to 500 ft)
NOTE
