Wiring; Field Installation - Emerson SC311 Reference Manual

Installation
June 2016
Figure 2-4 SC311 Sensor mounted to Millennium II series transmitters
SC311 Sensor mouth
and sintered element
2.6

Wiring

2.6.1

Field installation

Failure to follow these installation guidelines could result in death or serious injury. Ensure that only
qualified personnel perform the installation.
Electrical shock could cause death or serious injury. Use extreme caution when making contact with
the leads and terminals.
Do not open the transmitter, sensor, or junction box enclosure when in a classified area or when an
explosive atmosphere may be present unless the power to the transmitter and sensor has been
removed.
Wiring codes and regulations may vary. Wiring must comply with all applicable regulations relating to
the installation of electrical equipment in a hazardous area and is the responsibility of the installer. If in
doubt, consult a qualified official before wiring the system.
When separating the sensor from the transmitter, the use of shielded cable is highly recommended to
protect against interference caused by extraneous electrical or electromagnetic noise. In applications
where the wiring is installed in conduit, the conduit must not be used for wiring to other equipment.
6
Millennium II Transmitter
3/4" NPT
3/4" NPT
Locking
collar
Sensor Sensor
pointing pointing
downwards downwards
Reference Manual
MAN-0091, Revision 8
Millennium II Basic Transmitter &
Junction Box
SC311 Sensor mouth
and sintered element
3/4" NPT
3/4" NPT
Locking
collar
Installation