Endress+Hauser iTEMP TMT71, Руководство по эксплуатации

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Electrical connection iTEMP TMT71
22 Hauser
5.5 Ensuring the degree of 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 transmitter must be mounted in a terminal head with the appropriate degree of
protection.
• The housing seals must be clean and undamaged when inserted into their grooves. The
seals must be dried, cleaned or replaced if necessary.
• The connecting cables used must have the specified external diameter (e.g. M20x1.5,
cable diameter 8 to 12 mm).
• Firmly tighten the cable gland. →  14,  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. →  14,  22
• Replace unused cable glands with dummy plugs.
• Do not remove the grommet from the cable gland.
A0024523
 14 Connection tips to retain IP67 protection
5.6 Post-connection check
Device condition and specifications Notes
Is the device or cable undamaged (visual check)? --
Electrical connection Notes
Does the supply voltage match the specifications on
the nameplate? • Head transmitter: U = 10 to 36 V
DC
• DIN rail transmitter: U = 11 to 36 V
DC
• Other values apply in the hazardous area, see the
corresponding Ex Safety Instructions (XA).
Are the mounted cables relieved of tension? --
Are the power supply and signal cables connected
correctly? →  19
Are all the screw terminals firmly tightened and have
the push-in terminal connections been checked? --
Are all the cable entries installed, tightened and leak-
tight? --
Are all housing covers installed and firmly tightened? --