Promag 53 PROFIBUS DP/PA Installation
Endress+Hauser 13
Partially filled pipes
Partially filled pipes with gradients necessitate a drain-type configuration. The Empty Pipe
Detection function offers additional protection by detecting empty or partially filled pipes →
125.
"
Caution!
Risk of solids accumulating. Do not install the sensor at the lowest point in the drain. It is
advisable to install a cleaning valve.
A0011901
Fig. 8: Installation in partially filled pipe
Down pipes
Install a siphon or a vent valve downstream of the sensor in down pipes longer than 5 meters
(16,3 ft). This precaution is to avoid low pressure and the consequent risk of damage to the
lining of the measuring tube. This measure also prevents the system losing prime, which
could cause air inclusions.
Information on the lining's resistance to partial vacuum → 165
A0011902
Fig. 9: Measures for installation in a down pipe
1Vent valve
2Siphon
h Length of down pipe (h
5 m (16,3 ft))
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