Endress+Hauser HART Proline Promass 83, Руководство по эксплуатации

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Wiring Proline Promass 83
30 Hauser
4.3 Degree of protection
The measuring device fulfill 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.
• The threaded fasteners and screw covers must be firmly tightened.
• The cables used for connection must be of the specified outside diameter
→
110, cable
entries.
• The cable entries must be firmly tighten (point a
→
27).
• The cable must loop down in front of the cable entry ("water trap") (point b
→
27).
This arrangement prevents moisture penetrating the entry.
!
Note!
The cable entries may not be point up.
a0001914
Fig. 27: Installation instructions, cable entries
• Remove all unused cable entries and insert plugs instead.
• Do not remove the grommet from the cable entry.
"
Caution!
Do not loosen the screws of the sensor housing, as otherwise the degree of protection
guaranteed by Hauser no longer applies.
4.4 Post-connection check
Perform the following checks after completing electrical installation of the measuring
device:
a b
Device condition and specifications Notes
Are cables or the device damaged (visual inspection)? –
Electrical connection Notes
Does the supply voltage match the specifications on the nameplate? 85 to 260 V AC (45 to 65 Hz)
20 to 55 V AC (45 to 65 Hz)
16 to 62 V DC
Do the cables comply with the specifications?
→
26
Do the cables have adequate strain relief? –
Cables correctly segregated by type?
Without loops and crossovers? –
Are the power supply and signal cables correctly connected? See the wiring diagram inside
the cover of the terminal
compartment
Are all screw terminals firmly tightened? –
Are all cable entries installed, firmly tightened and correctly sealed?
Cables looped as "water traps"?
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30
Are all housing covers installed and firmly tightened? –