Ametek CEM/Humox, User Manual

Page: 29 / 136

Installation
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3-9
Any screw terminals on the wiring card not described in this section
are reserved for future use.
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.
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 wir-
ing 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 described
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.
NOTE
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