Degree Of Protection - Endress+Hauser Proline Prosonic Flow 93 Operating Instructions Manual

Proline Prosonic Flow 93 FOUNDATION Fieldbus
"
Endress+Hauser
4.4

Degree of protection

Transmitter (wall-mount housing)
The transmitter fulfills all the requirements for IP 67.
Caution!
Do not loosen the screws of the sensor housing, as otherwise the degree of protection guaranteed
by Endress+Hauser no longer applies.
Compliance with the following points is mandatory following installation in the field or servicing,
in order to ensure that IP 67 protection is maintained:
• The housing seals must be clean and undamaged when inserted into their grooves. The seals must
be greased, cleaned or replaced if necessary.
• All the threaded fasteners and screw covers must be firmly tightened.
• The cables used for connection must be of the specified outside diameter  ä 64.
• Securely tighten the cable entries  ä 67.
• Remove all unused cable entries and insert plugs instead.
• Do not remove the grommet from the cable entry.
Fig. 71: Installation instructions for cable entries on the transmitter housing
Prosonic Flow P and W sensor (Clamp-on / Insertion version), DDU 18
The flowrate sensors Prosonic Flow P and W, as well as the sound velocity sensors DDU 18, meet
all the requirements for IP 67 or IP 68 degree of protection (please observe the information on the
nameplate of the sensor).
Compliance with the following points is mandatory following installation in the field or servicing,
in order to ensure that IP 67/68 protection is maintained:
• Only use connecting cables supplied by Endress+Hauser with the corresponding cable
connectors.
• When connecting, do not jam the cable connectors. Tighten them to the stop.
• The cable connector seals must be clean, dry and undamaged when inserted in the seal groove
 ä 67 (1).
Fig. 72: Cable connector
1 Cable connector seal
1
Wiring
A0001138
A0001139
67