Wiring Connections; Installation Procedures; Mechanical - Transmitter - Emerson Rosemount 2151N Reference Manual

Rosemount 2151N

Wiring Connections

INSTALLATION
PROCEDURES
Mechanical – Transmitter
Table 2-1 – Recommended Bolts for
Bracket-to-Customer Interface
Bracket Code
(1)
0 No Bracket Supplied
1 SST Bracket for Coplanar Flange
2 Painted CS Bracket for Traditional Flange
(1) The Bracket Code can be found in the 14th position of the 2151N model string.
(2) Bracket-to-customer interface hardware is not supplied by Rosemount Nuclear.
(3) Grade 2 bolt is also acceptable for use.
11
The transmitter terminal block and ground screw terminals are
designed to accommodate wire sizes from 24 AWG to 14
AWG. The screw terminals are also compatible with stud size
#6 (M3.5) or #8 (M4) crimp terminals. Crimped connections
shall be performed in accordance with manufacturers'
recommendations with proper tooling.
Installation consists of mounting the transmitter and
conduit/connector, and making electrical and process
connections. The procedures for each operation follow.
Improper assembly of mounting bracket to transmitter process
flange can damage sensor module.
For safe assembly of bracket to flange, bolts must break back
plane of flange web (i.e. bolt hole), but must not contact
module housing. Use only the approved bolts supplied with
the bracket.
1. Attach the mounting bracket to the mounting location
as follows:
Coplanar and Traditional Flange Panel Mount
Mount the bracket to a panel or other flat surface
(for illustration see Figure 2-4). Please note that
the bolts required for this step are customer
supplied hardware. Based on tests performed by
Rosemount, the bolts listed in Table 2-1 are
recommended for the bracket-to-customer
interface. Torque each bolt to the value shown in
Table 5-2 in Section 5: Maintenance and
Troubleshooting.
2. Attach the transmitter to the mounting bracket (for
illustration see Figure 2-4). Use the four bolts with
washers supplied with the transmitter (3/8-16 x 1 1/2-
inch bolts for coplanar flange; 7/16-20 x 5/8-inch bolts
for traditional flange). Torque each bolt to the value
shown in Table 5-2 in Section 5: Maintenance and
Troubleshooting.
Bracket Type
Reference Manual
00809-0000-4851 Rev AD
December 2023
WARNING
Recommended Bolt for
Bracket-to-Customer
Interface (2)
N/A
5/16-18 Grade 5
(3)
5/16-18 Grade 5
(3)
Installation