Emerson Rosemount 8600 Series, Справочное руководство, Страница: 31 / 130

23 Rosemount 8600 Vortex Flow Meter
Reference Manual
May 2019
Installation
00809-0100-4860, Rev BF
3.2 Commissioning
Commission the Rosemount 8600D before putting it into operation. This ensures proper
configuration and operation of the meter. It also enables you to check hardware settings,
test the flowmeter electronics, verify flowmeter configuration data, and check output
variables. Any problems can be corrected – or configuration settings changed – before
going out into the installation environment. To commission on the bench, connect the
Field Communicator or AMS
™
Device Manager (or other communications device) to the
signal loop in accordance with the specifications for your communicator.
3.2.1 General considerations
Before you install a flowmeter in any application, you must consider flowmeter sizing (the
line size) and location. Choose the correct flowmeter size for an application to increase
rangeability and minimize pressure drop and cavitation. Proper location of the flowmeter
can ensure a clean and accurate signal. Follow the installation instructions carefully to
reduce start-up delays, ease maintenance, and ensure optimum performance.
3.2.2 Flowmeter sizing
Correct meter sizing is important for flowmeter performance. The Rosemount 8600D is
capable of processing signals from flow applications within the limitations described in
Appendix A: Specifications and Reference Data . Full scale is continuously adjustable within
these ranges.
To determine the correct flowmeter size for an application, process conditions must be
within the stated requirements for Reynolds number and velocity. See
Appendix A:
Specifications and Reference Data for sizing data.
Contact your local Rosemount Inc. sales representative to obtain a copy of Instrument
Toolkit
® which contains a sizing module for the Rosemount 8600D Vortex flowmeter. The
vortex sizing module will calculate valid flowmeter sizes based on user-supplied application
information.
3.2.3 Flowmeter orientation
Design process piping so the meter body will remain full, with no entrapped air. Allow
enough straight pipe both upstream and downstream of the meter body to ensure a
nonskewed, symmetrical profile. Install valves downstream of the meter when possible.
Vertical installation
Vertical installation allows upward process liquid flow and is generally preferred. Upward
flow ensures that the meter body always remains full and that any solids in the fluid are
evenly distributed.
The vortex meter can be mounted in the vertical down position when measuring gas or
steam flows. This type of application should be strongly discouraged for liquid flows,
although it can be done with proper piping design.
Note
To ensure the meter body remains full, avoid downward vertical liquid flows where back
pressure is inadequate.