XA00644F-A Levelflex FMP51/52/53/54/55/56/57
Endress+Hauser 7
Safety instructions:
Installation
XA00634Fxx01
å 1
A
Zone 1, Zone 21
1 Tank; Zone 0/1 or Zone 20/21
2 Electronic insert
3 Certified associated apparatus
4 Potential equalization line
5 Potential equalization
• In the case of process connections made of polymeric material or with polymeric coatings, avoid electrostatic
charging of the plastic surfaces.
• 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
a,min
and T
a,max
+20 K).
• In the event of additional or alternative special varnishing on the housing or other metal parts:
- Observe the danger of electrostatic charging and discharge.
- Do not rub surfaces with a dry cloth.
• Only use certified cable entries or sealing plugs.
The metal sealing plugs supplied meet this requirement.
• Before operation:
- Screw in the cover all the way.
- Tighten the securing clamp on the cover.
Intrinsic safety
• The device is only suitable for connection to certified, intrinsically safe equipment with explosion protection
Ex ia / Ex ib.
• 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
rms
. If the device is equipped with more
than one input, the dielectric strength of each individual input to ground is at least 500 V
rms
, 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 (GB3836.13, GB3836.15,
GB3836.16).
• The device can be connected to the Endress+Hauser FXA291 service tool: refer to the Operating
Instructions.
• When the intrinsically safe Ex ia circuits of the device are connected to certified intrinsically safe circuits of
Category Ex ib for Equipment Groups IIC or IIB, the type of protection changes to Ex ib[ia] IIC or Ex ib[ia] IIB.
Regardless of the power supply, all the internal circuits correspond to Ex ia IIC type of protection (e.g. service
interface, external display, sensor).
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