Ensuring The Degree Of Protection - Endress+Hauser HART Flowmeter Proline 400 Brief Operating Instructions

Electrical connection
5.6

Ensuring the degree of protection

5.6.1 Degree of protection IP66/67, Type 4X enclosure
The measuring device fulfills all the requirements for the IP66/67 degree of protection, Type
4X enclosure.
To guarantee IP66/67 degree of protection, Type 4X enclosure, carry out the following steps
after the electrical connection:
1. Check that the housing seals are clean and fitted correctly. Dry, clean or replace the
seals if necessary.
2. Tighten all housing screws and screw covers.
3. Firmly tighten the cable glands.
4. To ensure that moisture does not enter the cable entry, route the cable so that it loops
down before the cable entry ("water trap").

5. Insert dummy plugs (corresponding to the housing degree of protection) into unused
cable entries.
NOTICE
Standard dummy plugs used for transportation do not have the appropriate degree of
protection and can result in damage to the device!
‣
Use suitable dummy plugs corresponding to the degree of protection.
5.6.2 Degree of protection IP68, Type 6P enclosure, with "Cust-potted" option
Depending on the version, the sensor meets all the requirements of IP68 degree of protection,
Type 6P enclosure and can be used as a remote version .
The degree of protection of the transmitter is always only IP66/67, Type 4X enclosure and the
transmitter must therefore be treated accordingly →  38.
To guarantee IP68 degree of protection, Type 6P enclosure for the "Cust-potted" options, carry
out the following steps after the electrical connection:
1. Firmly tighten the cable glands (torque: 2 to 3.5 Nm) until there is no gap between the
bottom of the cover and the housing support surface.
2. Firmly tighten the union nut of the cable glands.
3. Pot the field housing with a potting compound.
38
Flowmeter Proline 400
A0029278
Endress+Hauser