Endress+Hauser iTEMP TMT85, Руководство по эксплуатации

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Electrical connection iTEMP TMT85
22 Hauser
5.3 Ensuring the degree of protection
The measuring system meets all the requirements of IP67 protection. Compliance with the
following points is mandatory following installation in the field or servicing in order to
ensure that IP67 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 cables used for connection must be of the specified outside diameter (e.g. M20x1.5,
cable diameter 8 to 12 mm).
• Firmly tighten the cable gland. →  10,  22
• The cables must loop down before they enter the cable glands ("water trap"). This means
that any moisture that may form cannot enter the gland. Install the device in such a way
that the cable glands are not facing upwards. →  10,  22
• Replace unused cable glands with dummy plugs.
• Do not remove the grommet from the cable gland.
A0024523
 10 Connection tips to retain IP67 protection
5.4 Post-connection check
Device condition and specifications Notes
Are the device or cables free from damage (visual
check)? --
Electrical connection Notes
Does the supply voltage match the information on the
nameplate? 9 to 32 V
DC
Do the cables used meet the required specifications? Fieldbus cable, →  18
Sensor cable, →  17
Do the cables have adequate strain relief? --
Are the power supply and signal cables connected
correctly? →  16
Are all the screw terminals well tightened and have
the connections of the spring terminals been checked? →  17
Are all cable entries mounted, tightened and leak-
tight?
Cable run with "water trap"? --
Are all housing covers installed and firmly tightened? --
Electrical connection of the fieldbus system Notes
Are all the connecting components (T-boxes, junction
boxes, connectors, etc.) connected with each other
correctly? --
Has each fieldbus segment been terminated at both
ends with a bus terminator? --