Overvoltage Protection; Safety Instructions: Zone; Temperature Tables; Connection Data - Endress+Hauser Levelflex FMP51 Mode D'emploi

XA00497F-C
Safety instructions:
Zone 0

Temperature tables

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Connection data

18

Overvoltage protection

• If an overvoltage protection according to IEC/EN 60079-14 against atmospheric over voltages is
required: no other circuits may leave the housing during normal operation without additional
measures.
• For installations which require overvoltage protection to comply with national regulations or
standards (e.g. IEC/EN 60079-14), install the device using overvoltage protection (e.g. HAW56x
from Endress+Hauser).
• Observe the safety instructions of the overvoltage protection.
Optional specification, ID Nx (Accessory Mounted) = NA
(Overvoltage protection (TRC [16], type OVP10)
• The internal overvoltage protection meets the requirements of IEC/EN 60079-14 section 12.3.
• The intrinsically safe input power circuit of the device is isolated from ground. If the device is only
equipped with one input, the dielectric strength of the input is at least 290 V
equipped with more than one input, the dielectric strength of each individual input to ground is at
least 290 V , and the dielectric strength of the inputs vis-à-vis one another is also at least 290 V
rms
• In the event of potentially explosive vapor/air mixtures, only operate the device under atmospheric
conditions.
– Temperature: –20 to +60 °C
– Pressure: 80 to 110 kPa (0.8 to 1.1 bar)
– Air with normal oxygen content, usually 21 % (V/V)
If no potentially explosive mixtures are present, or if additional protective measures have been taken
according to EN 1127-1, the device may also be operated under non-atmospheric conditions in
accordance with the manufacturer' s specifications.
• Associated devices with galvanic isolation between the intrinsically safe and non-intrinsically safe
circuits are preferred.
• If there is a risk of dangerous potential differences within Zone 0 (e.g. through the occurrence of
atmospheric electricity), implement suitable measures for intrinsically safe circuits in Zone 0 (e.g. in
accordance with the requirements of IEC/EN 60079-14).
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Caution!
Optional specification, ID Nx (Accessory Mounted) = NA
(Overvoltage protection (TRC [16], type OVP10)
• When using the internal overvoltage protection: Reduce the admissible ambient temperature at the
housing by 2 K.
Optional specification, ID Nx (Accessory Mounted) = NA
(Overvoltage protection (TRC [16], type OVP10)
• When using the internal overvoltage protection: No changes to the connection values.
Basic specification, Position 1, 2 (Approval) = BD, ID
Ex ic
• Power supply and signal circuit with protection type: intrinsic safety Ex ic IIC or IIB.
Basic specification, Position 3 (Power Supply; Output) = A (TRC [02])
Terminal 1 (+), 2 (–)
Power supply:
U = 35 V
i
I = not applicable (current-controlled circuit)
i
P = not applicable
i
effective inner inductance L = 0 μH
i
effective inner capacitance C = 5 nF
i
Levelflex
. If the device is
rms
.
rms
Endress+Hauser