General Wiring And Conduit Requirements - Ametek Thermox WDG Insitu User Manual

This wiring section shows you how to make the following connections:
•
AC mains supply wiring to control unit
•
AC mains supply wiring to sensor
•
Control unit to sensor
•
Control unit to remote calibration unit
•
Control unit to alarm devices
•
Control unit to current output devices
•
Control unit to host computer (RS-485 communications)
In addition, this wiring section provides mandatory EMC grounding, shielding,
and noise protection requirements.
If you are considering adding option cards at a later time, such as a

combustibles card, you may want to connect the required intercon-
necting wires when you first install your analyzer, especially if run-
NOTE
ning the wires over long distances through conduit.

General Wiring and Conduit Requirements

This section describes general wiring and conduit requirements.
•
Sensor wiring conductors must be rated at a minimum of 80 °C. All other
wiring conductor ratings should be for the minimum temperature required for
the equipment being connected to the analyzer, but not less than 60 °C.
•
Use only the applicable NEMA-approved conduit fittings or cable fittings to
maintain the NEMA rating for the Series 2000 controller or sensor enclosure.
If not using a conduit entry, leave the factory NEMA-approved plugs intact.
Never leave any holes unplugged.
•
Follow all applicable electrical codes for your location.
•
Follow proper grounding, shielding and noise protection practices as de-
scribed in this section.
•
Use twisted-pair cable with an overall braided shield, or twisted-pair cable in
rigid metal conduit for all sensor and signal wiring.
Installation and Start-Up | 3-13