Instruction manual

Micro Motion
®
Model D and DT Sensors Instruction Manual 19
Installation
Step 4 Wiring
Hazardous area installations
The following warning applies to hazardous area installations
Model D sensor junction box
Most Model D sensors are shipped with a junction box for wiring. There
are two types of junction boxes: one for the D600 sensor, one for all the
other D sensors.
• The D600 junction box is different than the junction box for other D
sensors. D600 sensors are also available with a core processor. For
more information on the D600 sensor, see page 24.
• Model DT sensors can use a junction box. For more information on the
DT sensor junction box, see page 20.
For Model D sensors (except the DT series and D600):
• If it if not already installed, install the junction box on the sensor,
following the wiring instructions on the junction box.
• If possible, install wiring with the junction-box opening pointed
downward, or with a drip leg in the conduit or cable, to reduce the risk
of condensation or excessive moisture in the junction box. See
illustration on page 20.
• Next, follow the guidelines in Connecting and shielding 9-wire cable to
wire the sensor to the transmitter.
WARNING
Failure to comply with requirements for intrinsic
safety in a hazardous area could result in an
explosion.
• Make sure the hazardous area specified on the sensor
approvals tag is suitable for the environment in which the
sensor is installed. See illustrations, pages 3-6.
• For installation in an area that requires intrinsic safety,
refer to Micro Motion hazardous approval installation
instructions.
• For hazardous area installations in Europe, refer to
standard EN 60079-14 if national standards do not apply.