Mechanical - Conduit; Electrical - Emerson Rosemount 2151N Reference Manual

Reference Manual
00809-0000-4851 Rev AD
December 2023
Mechanical – Conduit
Connections

Electrical

Installation
Be careful not to damage the set screw interface between the
sensor module and the electronics housing when making
conduit connections.
NOTE
Install the conduit seal in accordance with the manufacturer's
instructions or use the following procedure:
1. Seal conduit threads with your plant-approved thread
sealant.
2. Install conduit/connector to the manufacturers'
recommended thread engagement or torque level.
For electrical connectors, refer to the appropriate
manufacturers' installation manuals. Hold the
electronics housing securely to avoid damaging the
set screw interface between the sensor module and
the electronics housing during conduit installation.
3. Provide separate support for the conduit if necessary.
Do not connect signal leads to the 'TEST' terminals.
Electrical shock can result in death or serious injury. Avoid
contact with the leads and terminals. High voltage that may
be present on leads can cause electrical shock.
1. Remove the cover from the terminal side of the
transmitter.
2. Connect the power leads to the 'SIGNAL' terminals on
the transmitter terminal block (see Figure 2-6). Avoid
contact with the leads and terminals. Do not connect
the powered signal wiring to the test terminals, power
could damage the test diode. Torque the terminal
screws to the value shown in Table 5-2 in Section 5:
Maintenance and Troubleshooting or hand-tight.
Signal wiring supplies all power to the transmitter. If a
3-wire connector is utilized or loop grounding is
required, use the ground screw shown in Figure 2-7.
3. Recheck connections for proper polarity. Position
excess wiring inside the housing so it cannot be
damaged during cover installation.
4. Carefully replace cover. Take care that electrical
wires do not interfere with cover installation or wire
damage could occur.
NOTE
Housing covers are pre-lubricated and do not require
additional lubrication.
Rosemount 2151N
CAUTION
CAUTION
WARNING
14