Safety Instructions: Installation; Potential Equalization - Endress+Hauser Levelflex FMP51 Mode D'emploi

Levelflex
Safety instructions:
Installation
Endress+Hauser
A
2
1
å 1
A Zone 2
1 Tank; Zone 0, Zone 2
2 Electronic insert
3 Certified associated apparatus
4 Potential equalization line
5

Potential equalization

• After aligning (rotating) the housing, retighten the fixing screw (see Operating Instructions).
• When mounting the device:
– Exclude any mechanical damage or friction during the application.
– Pay particular attention to flow conditions and tank fittings.
• Continuous service temperature of the connecting cable: –40 to  +85 °C; in accordance with the
range of service temperature taking into account additional influences of the process conditions
(T ), (T +20 K).
a,min a,max
Intrinsic safety
Ex ic
Basic specification, Position 1, 2 (Approval) = BD, ID
• The device is only suitable for connection to certified, intrinsically safe equipment with explosion
protection Ex ic.
• If the conditions U > U , (I
i o
installation concept (Ex ic) allows energy-limited devices or associated energy-limited devices to be
connected according to the entity concept.
• 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 500 V
equipped with more than one input, the dielectric strength of each individual input to ground is at
least 500 V , and the dielectric strength of the inputs vis-à-vis one another is also at least 500 V
rms
• Observe the pertinent guidelines when interconnecting intrinsically safe circuits (e.g.
IEC/EN 60079-14, Proof of Intrinsic Safety).
• The device can be connected to the Endress+Hauser FXA291 service tool: refer to the Operating
Instructions and specifications in the "Overvoltage protection" (→  18) chapter.
Non-sparking
Ex nA
Basic specification, Position 1, 2 (Approval) = BL, IL
• In a potentially explosive atmosphere:
– Do not disconnect electrical connections when energized.
– Do not connect the service tool (e.g. FXA291).
Potential equalization
• Integrate the device into the local potential equalization.
–
+
> I ), C > C + C and L
i o a i cable a
> L + L are met, the energy-limited
i cable
. If the device is
rms
XA00497F-C
3
4
4
5
FMP5x_01
.
rms
17