Safety Instructions: Installation; Potential Equalization - Endress+Hauser Liquiphant M FTL50 Bedienungsanleitung

Liquiphant M, Liquiphant S
Safety instructions:
Installation
Endress+Hauser
A
3
2
1
å 1
A Zone 1
1 Tank; Zone 0, Zone 1
2 Electronic insert
3 Housing
4 Supply unit
5 Potential equalization line
6 Local potential equalization
• Before operation:
– Screw in the cover all the way.
– Tighten the securing clamp on the cover.
• In potentially explosive atmospheres:
– Do not disconnect the electrical connection of the power supply circuit when energized.
– Do not open the connection compartment cover and the electronics compartment cover when
energized.
• Perform the following to achieve the degree of protection IP66/68:
– Screw the cover tight.
– Mount the cable entry correctly.
• Observe the maximum process conditions according to the manufacturer' s Operating Instructions.
• At high medium temperatures, note flange pressure load capacity as a factor of temperature.
• Install the device to exclude any mechanical damage or friction during the application.
Pay particular attention to flow conditions and tank fittings.
• Support extension tube of the device if a dynamic load is expected.
• Only use certified cable entries suitable for the application. Observe national regulations and
standards. Accordingly, the connection terminal does not include any ignition sources.
• Seal unused entry glands with approved sealing plugs that correspond to the type of protection.
The plastic transport sealing plug does not meet this requirement and must therefore be replaced
during installation.
• The built-in metallic sealing plug is examined and approved for explosion protection type Ex d with
the device.
• When operating the transmitter housing at an ambient temperature under –20 °C, use appropriate
cables and cable entries permitted for this application.
• When connecting through a conduit entry approved for this purpose, mount the associated sealing
unit directly at the housing.
Accessory high pressure sliding sleeve
• The high pressure sliding sleeve can be used for a continuous setting of the switch point and is suited
for zone division if mounted properly (see Operating Instructions).

Potential equalization

• Integrate the device into the local potential equalization.
–
+
XA00031F-I
4
5
5
6
FTL8x_01
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