Emerson Rosemount 2051G, Reference Manual

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Reference Manual
00809-0100-4108, Rev BA
Hardware Installation
January 2018
Hardware Installation
3.3 Considerations
3.3.1 Installation considerations
Measurement accuracy depends upon proper installation of the transmitter and impulse piping. Mount
the transmitter close to the process and use a minimum of piping to achieve best accuracy. Keep in mind
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.
Important
Install the enclosed pipe plug (found in the box) in unused housing conduit opening with a minimum of
five threads of engagement to comply with explosion-proof requirements. Always ensure a proper seal
by installing the electronics housing cover(s) so that metal contacts metal. Use Rosemount O-rings.
Explosions could result in death or serious injury.
Installation of this transmitter in an explosive environment must be in accordance with the
appropriate local, national, and international standards, codes, and practices. Review the approvals
section of the Rosemount 2051G Reference Manual for any restrictions associated with a safe
installation.

Before connecting a Field Communicator in an explosive atmosphere, ensure the instruments in
the loop are installed in accordance with intrinsically safe or non-incendive field wiring practices.

In an explosion-proof/flameproof installation, do not remove the transmitter covers when power
is applied to the unit.
Process leaks may cause harm or result in death.
Install and tighten process connectors before applying pressure.
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.
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 Emerson
™
for use as spare parts
could reduce the pressure retaining capabilities of the transmitter and may render the
instrument dangerous.
Use only bolts supplied or sold by Emerson as spare parts.
Improper assembly of manifolds to traditional flange can damage sensor module.
For safe assembly of manifold to traditional flange, bolts must break back plane of flange web (i.e.
bolt hole) but must not contact sensor module housing.