Emerson Rosemount 8800D Series Quick Start Manual page 5

Quick Start Guide
April 2016
Steam installations
Avoid installation shown in Figure 4. Such conditions may cause a water-hammer
condition at start-up due to trapped condensation.
Figure 4. Improper Installation
Upstream/downstream requirements
The Rosemount 8800D Flowmeter may be installed with a minimum of 10
straight pipe diameters (10D) upstream and five straight pipe diameters (5D)
downstream by following the K-factor corrections as described in the Rosemount
8800 Installation Effects Technical Data Sheet. No K-factor correction is required
if 35 straight pipe diameters upstream (35D) and five straight pipe diameters
downstream (5D) are available.
External pressure/temperature transmitters
When using pressure and temperature transmitters in conjunction with the
8800D for compensated mass flows, install the transmitters downstream of the
Rosemount 8800D Flowmeter as shown in Figure 5.
Figure 5. Upstream/Downstream Piping
P T
4 Downstream
6 Downstream
5