Emerson Rosemount - Process Reference Connection

5 Process reference connection
The figures shown in this section illustrate best practice installations for
process reference connections only. For installations in conductive, unlined
pipe it may be acceptable to use one ground ring or one lining protector to
establish a process reference connection. Earth safety ground is also
required as part of this installation, but is not shown in the figures. Follow
national, local, and plant electrical codes for safety ground.
Use Table 5-1 to determine which process reference option to follow for
proper installation.
Table 5-1: Process reference options
Type of pipe Grounding
straps
Grounding
rings
Reference
electrode
Lining
protectors
Conductive
unlined pipe
See Figure 5-1 See Figure 5-2 See Figure 5-4 See Figure 5-2
Conductive
lined pipe
Insufficient
grounding
See Figure 5-2 See Figure 5-1 See Figure 5-2
Non-
conductive
pipe
Insufficient
grounding
See Figure 5-3 Not
recommended
See Figure 5-3
Note
For line sizes 10-inch and larger the ground strap may come attached to the
sensor body near the flange. See Figure 5-5.
Figure 5-1: Grounding straps in conductive unlined pipe or reference
electrode in lined pipe
Quick Install Guide November 2019
16 Rosemount
™
MS Slurry Magnetic Flow Meter Sensor