Proline t-mass 65 Wiring
Endress+Hauser
17
3.2 Degree of protection
The devices fulfill all the requirements for IP 67 (NEMA 4X).
After mounting in the field or service work, the following points have to be observed to ensure
that IP 67 (NEMA 4X) protection is retained:
• Install the measuring device in such a way that the cable entries do not point upwards.
• Do not remove the grommet from the cable entry.
• Remove all unused cable entries and insert blanking or certified plugs instead.
• Use cable entries and drain plugs with a long-term operating temperature range in accordance
with the temperature specified on the nameplate.
3.3 Post-connection check
• Are cables or is the device damaged (visual inspection)?
• Does the supply voltage match the specifications on the nameplate?
• Are the power supply and signal cables correctly connected?
• Do the cables used comply with the necessary specifications?
• Do the mounted cables have adequate strain relief?
• Cables correctly segregated by type? Without loops and crossovers?
• Are all screw terminals firmly tightened?
• Are all the cable entries installed, correctly tightened and firmly sealed?
• Cables looped as "water traps"?
• Are all housing covers installed and correctly tightened?
In addition, for measuring devices with fieldbus communication:
• 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?
• Has the max. length of the fieldbus cable and the spurs been observed in accordance with the
specifications?
• Is the fieldbus cable fully shielded and correctly grounded?
A0007549 A0007550
Tighten the cable entries correctly. The cables must loop down before they enter the cable
entries ("water trap").
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