Emerson Rosemount 1408A User manual

Quick Start Guide
00825-0200-4480, Rev AB
September 2021
Rosemount™ 1408A Level and Flow
Transmitter
Non-Contacting Radar

1 About this guide
This Quick Start Guide provides basic guidelines for the Rosemount
1408A Level and Flow Transmitter. Refer to the 1408A Reference
Manual for more instructions.
1.1 Safety messages
WARNING
Failure to follow safe installation and servicing guidelines could
result in death or serious injury.
Ensure the transmitter is installed by qualified personnel and in
accordance with applicable code of practice.
Use the equipment only as specified in this Quick Start Guide and the
Reference Manual. Failure to do so may impair the protection
provided by the equipment.
Repair, e.g. substitution of components, etc. may jeopardize safety
and is under no circumstances allowed.
WARNING
Process leaks could result in death or serious injury.
Handle the transmitter carefully.
Install and tighten process connectors before applying pressure.
Do not attempt to loosen or remove process connectors while the
transmitter is in service.
2

WARNING
Physical access
Unauthorized personnel may potentially cause significant damage to
and/or misconfiguration of end users’ equipment. This could be
intentional or unintentional and needs to be protected against.
Physical security is an important part of any security program and
fundamental to protecting your system. Restrict physical access by
unauthorized personnel to protect end users’ assets. This is true for all
systems used within the facility.
CAUTION
Hot surfaces
The transmitter and process seal may be hot at high process
temperatures. Allow to cool before servicing.
Note
Be careful not to scratch or otherwise damage the PTFE sealing.
3

2 Mount transmitter on tank
2.1 Mount the bracket
Procedure
1. Mount the bracket on the wall/ceiling or other flat surface.
T30
2. Apply lubricating paste on the transmitter thread.
Note
The paste must be approved for the application and
compatible with the elastomers used.
4

3. Secure the transmitter to the bracket.
Mounting options:
•(A) Antenna extension for open air installations
•(B) Lock nut
A B
46 mm
36 mm
2.1.1 Bracket hole pattern
Figure 2-1: Hole Pattern
0.28 (7)
0.43 (11)
1.97
(50)
Ø 0.28 (7)
30°
Dimensions are in inches (millimeters).
5

2.2 Mounting onto a threaded connection
Refer to Figure 2-2 for the required thread engagement length at the
customer G1 process connection.
Figure 2-2: Thread Engagement Length
A A
A. 0.35 to 0.63 in. (9 to 16 mm)
2.2.1 Mount on a threaded flange connection
Procedure
1. Place a suitable soft gasket on the tank flange.
6

2. Place the flange over the gasket.
3. Tighten the bolts and nuts with sufficient torque for the flange
and gasket choice.
0.75 in. (19 mm)
4. Apply lubricating paste on the transmitter thread.
Note
The paste must be approved for the application and
compatible with the elastomers used.
7

5. Mount the transmitter on the tank.
39 mm
Torque 310 in-lb (35 N-m)
2.2.2 Mount the threaded adapter version
Procedure
1. Apply anti-seize paste or PTFE tape on outer threads according
to your site procedures.
2. Mount the threaded adapter on the tank.
41 mm
8

3. Apply lubricating paste on the transmitter thread.
Note
The paste must be approved for the application and
compatible with the elastomers used.
4. Mount the transmitter on the tank.
39 mm
Torque 310 in-lb (35 N-m)
9

2.2.3 Mount on a threaded connection
Procedure
1. Apply lubricating paste on the transmitter thread.
Note
The paste must be approved for the application and
compatible with the elastomers used.
2. Mount the transmitter on the tank.
39 mm
Torque 310 in-lb (35 N-m)
10