Endress+Hauser Liquiphant M FTL50H - Safety Instructions: Installation

Liquiphant M, Liquiphant S FTL50(H)/51(H)/51C, FTL70/71 XA00182F-F
Endress+Hauser 23
Safety instructions:
Installation
2
3
A
1
4
5
5
6
–
+
A0025537
 5
A Zone 2, Zone 22
1 Tank; Zone 2, Zone 22
2 Electronic insert; Electronics compartment
3 Connection compartment Ex nA (only Basic specification, Position 8, 9 (Housing; Cable Entry) = x7)
4 Power supply or power supply unit
5 Potential equalization line
6 Potential equalization
• Perform the following to achieve the degree of protection IP66/67 or 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.
• When operating the transmitter housing at an ambient temperature under –20 °C, use appropriate
cables and cable entries permitted for this application.
• 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.
• Before operation:
– Screw in the cover all the way.
– Tighten the securing clamp on the cover.
Basic specification, Position 1 (Approval) = B
Continuous service temperature of the connecting cable: –50 °C to ≥ +115 °C; in accordance with the
range of service temperature taking into account additional influences of the process conditions
(T
a,min
), (T
a,max
+45 K).
Basic specification, Position 1 (Approval) = C (only Ex nA, Ex ic)
Continuous service temperature of the connecting cable: –50 °C to ≥ +85 °C; in accordance with the
range of service temperature taking into account additional influences of the process conditions
(T
a,min
), (T
a,max
+15 K).
Ex nA, Ex nC, Ex tc
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.
Accessory high pressure sliding sleeve
The high pressure sliding sleeve can be used for a continuous setting of the switch point (see
Operating Instructions).