Draft Range; Environmental; Installation Procedures - Emerson Rosemount 3051S Series Reference Manual

Installation
October 2016
2.3.5

Draft range

Installation
For the Rosemount 3051S_CD0 Draft Range Pressure Transmitter, it is best to mount the transmitter
with the isolators parallel to the ground. Installing the transmitter in this way reduces oil mounting effect
and provides for optimal temperature performance.
Be sure the transmitter is securely mounted. Tilting of the transmitter may cause a zero shift in the
transmitter output.
Reducing process noise
There are two recommended methods of reducing process noise: output damping and, in gage
applications, reference side filtering.
Reference side filtering
In gage applications it is important to minimize fluctuations in atmospheric pressure to which the low
side isolator is exposed. One method of reducing fluctuations in atmospheric pressure is to attach a
length of tubing to the reference side of the transmitter to act as a pressure buffer.
Another method is to plumb the reference side to a chamber that has a small vent to atmosphere. If
multiple draft transmitters are being used in an application, the reference side of each device can be
plumbed to a chamber to achieve a common gage reference.
2.3.6

Environmental

Access requirements and cover installation on
the transmitter to minimize ambient temperature changes, vibration, mechanical shock, and to avoid
external contact with corrosive materials.
temperature operating limits.
2.4

Installation procedures

For dimensional drawing information, refer to
page
Process flange orientation
Mount the process flanges with sufficient clearance for process connections. For safety reasons, place
the drain/vent valves so the process fluid is directed away from possible human contact when the vents
are used. In addition, consider the need for a testing or calibration input.
Housing rotation
See "Consider housing rotation" on page
Terminal side of electronics housing
Mount the transmitter so the terminal side is accessible. Clearance of 0.75 in. (19 mm) is required for
cover removal. Use a conduit plug in the unused conduit opening.
Circuit side of electronics housing
Provide 0.75 in. (19 mm) of clearance for units with out an LCD display. Three inches of clearance is
required for cover removal if a meter is installed.
6
99.
page 7 can help optimize transmitter performance. Mount
Appendix A: Specifications and Reference Data
Appendix A: Specifications and Reference Data
13.
Reference Manual
00809-0200-4801, Rev DA
lists
on
Installation