General Considerations; Mechanical Considerations - Emerson Rosemount 2151N Reference Manual

Reference Manual
00809-0000-4851 Rev AD
December 2023
GENERAL
CONSIDERATIONS
MECHANICAL
CONSIDERATIONS
Installation
Electrical shock can result in death or serious injury.
Avoid contact with the leads and terminals.
•
Process leaks could result in death or serious injury.
Install and tighten all four flange bolts before applying
•
pressure.
Do not attempt to loosen or remove flange bolts while
•
the transmitter is in service.
Replacement equipment or spare parts not approved by
Rosemount Nuclear for use could reduce the pressure
retaining capabilities of the transmitter and may render
the instrument dangerous.
Use only components supplied with the Rosemount
•
2151N transmitter or designated by Rosemount
Nuclear as spare parts for the 2151N.
Improper assembly of mounting bracket to process flange
can damage sensor module.
For safe assembly of bracket to transmitter process
•
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.
Measurement performance depends upon proper installation
of the transmitter, and its associated impulse piping and
valves. Mount the transmitter close to the process and use
minimum piping to achieve best performance. For flow
measurement, proper installation of the primary element is
also critical to performance. Also, consider the need for easy
access, personnel safety, practical field calibration, and a
suitable transmitter environment. Install the transmitter to
minimize vibration, shock, and temperature fluctuation.
Remove orange plugs from the transmitter conduit and
process connection openings. The orange plugs are used to
keep the housing free of debris during shipping. They are not
meant to be in the conduit openings when the transmitter is
installed and in use.
This section contains information you should consider when
preparing to mount the transmitter. Read this section carefully
before proceeding to the mechanical installation procedure.
Do not attempt to loosen or remove flange bolts while the
transmitter is in service.
Rosemount 2151N
WARNING
WARNING
4