Installation Proline Promag 50
28 Endress+Hauser
2.6 Installing the Promag H sensor
Depending on the order specifications, the sensor is supplied with or without ready-mounted
process connections. Mounted process connections are fixed to the sensor with 4 or 6
hexagonal-headed bolts.
"
Caution!
Depending on the application and length of the pipe, the sensor may have to be supported or
additionally secured. The sensor must be secured if using plastic process connections. An
appropriate wall mounting kit can be ordered separately from Endress+Hauser as an accessory.
2.6.1 Seals
When mounting the process connections, make sure that the seals in question are free from dirt
and centered correctly.
"
Caution!
• The screws must be securely tightened in the case of metal process connections. Together
with the sensor, the process connection forms a metal connection that ensures defined seal
compression.
• With regard to process connections made of plastic material, comply with the max. torques
for lubricated threads (7 Nm / 5.2 lbf ft). A seal must always be used between the connection
and counterflange for plastic flanges.
• The seals should be replaced periodically depending on the application, particularly if molded
seals are used (aseptic version)! The intervals between seal replacement depend on the
frequency of the cleaning cycles and the fluid and cleaning temperatures. Replacement seals
can be ordered as an accessory.
2.6.2 Using and mounting grounding rings (DN 2 to 25, 1/12" to 1")
In the case of process connections made of plastic (e.g. flange connections or adhesive
couplings), potential equalization between the sensor and fluid must be ensured via additional
grounding rings.
If grounding rings are missing, this can affect accuracy or result in the destruction of the sensor
due to electrochemical electrode reduction.
"
Caution!
• Depending on the order option, appropriate plastic disks are used instead of grounding rings
for the process connections. These plastic disks only act as a kind of "place holder" and do not
have any potential equalization function whatsoever. In addition, they also assume an
important sealing function at the sensor/connection interface. Thus, these plastic disks/seals
should never be removed and should always be mounted for process connections without
metal grounding rings!
• Grounding rings can be ordered separately from Endress+Hauser as an accessory.
When ordering, make sure that the grounding rings are compatible with the electrode
material. Otherwise there is the risk that electrodes can be damaged by electrochemical
corrosion! For information on materials, see the Operating Instructions on the CD-ROM.
Vendor Manual - Electromagnetic Flowmeter - Endress and Hauser - Model Proline Promag 50 - Operating Instructions
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