Degree Of Protection; Post-Connection Check - Endress+Hauser Proline Prosonic Flow 91W Brief Operating Instructions

Proline Prosonic Flow 91W
4.4

Degree of protection

The devices meet all the requirements for IP 67.
After mounting in the field or service work, the following points have to be observed to ensure
that IP 67 protection is retained:
• Install the measuring device in such a way that the cable entries do not point upwards.
• Do not remove the seal from the cable entry.
• Remove all unused cable entries and plug them with suitable, certified drain plugs.
• When working at low temperatures (below –20 °C / –4 °F), in particular, ensure the
suitability of the cables, cable entries and plugs is certified for these temperatures.
4.5

Post-connection check

• Are cables or the device damaged (visual inspection)?
• Does the supply voltage match the information on the nameplate?
• Do the cables comply with the specifications?
• Do the mounted cables have adequate strain relief and are they routed securely?
• Is the cable type route completely isolated? Without loops and crossovers?
• Are all screw terminals firmly tightened?
• Are all cable entries installed, firmly tightened and correctly sealed?
• Cable routed as a "water trap" in loops?
• Are all the housing covers installed and securely 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 been observed in accordance with the specifications?
• Has the max. length of the spurs been observed in accordance with the specifications?
• Is the fieldbus cable fully shielded and correctly grounded?
Endress+Hauser
Tighten the cable entries correctly.
A0007549
The cables must loop down before they enter the cable
entries ("water trap").
A0007550
Wiring
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