March 2016
16
Quick Start Guide
5.0 Process reference connection
Figure 12 through Figure 15 illustrate process reference connections only. Earth
safety ground is also required as part of the installation but is not shown in the
figures. Follow national, local, and plant electrical codes for safety ground.
Use Table 8 to determine which process reference option to follow for proper
installation.
Table 8. Process reference installation
Note
For line sizes 10-in. and larger, the ground strap may come attached to the sensor body near the
flange. See Figure 16.
Figure 12. Grounding Straps in Conductive Unlined Pipe or Reference
Electrode in Lined Pipe
Process reference options
Type of pipe Grounding straps Grounding rings
Reference electrode
Conductive unlined
pipe
See Figure 12 See Figure 13
(1)
1. Grounding ring and reference electrode are not required for process reference. Grounding straps
per Figure 12 are sufficient.
See Figure 15
(1)
Conductive lined pipe Insufficient grounding See Figure 13 See Figure 12
Non-conductive pipe Insufficient grounding See Figure 14 Not recommended
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