Ingress Protection; Post Connection Check - Endress+Hauser iTEMP TMT 165 FOUNDATION Fieldbus Betriebsanleitung

4 Wiring
92
4.3

Ingress protection

The devices fulfil all the requirements for IP 67. 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 dried, cleaned or replaced if necessary.
• All threaded fasteners and screw covers must be firmly tightened.
• The cables used for connection must be of the specified outside diameter M20 x 1.5
(8 to 12 mm) and PG 13.5 (5 to 15 mm).
• Firmly tighten the cable entries (Fig. 4-4).
• The cables must loop down before they enter the cable entries ("water trap", fig. 4-4).
This arrangement prevents moisture penetrating the entry. Always install the measur-
ing device in such a way that the cable entries do not point upwards.
• Remove all unused cable entries and insert plugs instead.
• Do not remove the grommet from the cable entry.
Fig. 4-4 Installation instructions for cable entries
4.4

Post connection check

Perform the foillowing checks after completeing the electrical installation of the unit as
follows:
Device condition and specification
Are cables or the device visibly damaged (visual inspection)?
Electrical connection of field transmitter
Do the cables comply with the necessary specifications?
Do the cables have adequate strain relief?
Are the cable types correctly segregated?
No loops or crossovers?
Are the sensor and fieldbus cable correctly connected?
Are all screw terminals firmly tightened?
Have the measures for grounding/potential equalisation been correctly
implemented?
FOUNDATION Fieldbus temperature transmitter
Notes
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Notes
See page 87
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See connection diagram
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See page 90
Endress+Hauser