Endress+Hauser PROFI BUS Proline Promag 53 PROFIBUS DP Operating Manual page 36

Installation
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36
Installation of ground disks (DN 15 to 300)
Depending on the application, e.g. with lined or ungrounded pipes (→ Page 66 ff.), it may be
necessary to mount ground disks between the sensor and the pipe flange for potential matching.
Ground disks can be ordered separately as an accessory from Endress+Hauser → Page 30
Caution!
• In this case, when using ground disks (including seals) the total fitting length increases! All the
dimensions are provided in the separate documentation "Technical information".
• PTFE and PFA lining → only install additional seals between the ground disk and pipe flange.
1. Place the ground disk and additional seal(s) between the instrument and the pipe flange (see
Figure).
2. Insert the bolts through the flange holes. Tighten the nuts so that they are still loose.
3. Now rotate the ground disk as shown in the Figure until the handle strikes the bolts. This will
center the ground disk automatically.
Tighten the bolts to the required torque. → Page 38 ff.
4.
Connect the ground disk to ground potential. → Page 67
5.
Fig. 21: Assembly with ground disks (Promag P, DN 15 to 300)
Proline Promag 53 PROFIBUS DP/PA
Endress+Hauser
a0004297