Safety Instructions: Installation; Potential Equalization; Overvoltage Protection - Pepperl+Fuchs Pulscon LTC50 Betriebsanleitung

Pulscon LTC50, LTC51, LTC57
SI00496O-C
Safety instructions:
Installation
EN
14
A
2
1
Figure 1
A Zone 0, Zone 1
1 Tank; Zone 0, Zone 1
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 °C ...  +85 °C; in accordance with
the range of service temperature taking into account additional influences of the process
conditions (T ), (T
amb,min amb, max
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
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
rms
500 V .
rms
• Observe the pertinent guidelines when interconnecting intrinsically safe circuits
(e. g. IEC/EN 60079-14, Proof of Intrinsic Safety).
• Refer to the Operating Instructions and specifications in the "Overvoltage protection" chapter.
• When the device is connected to certified intrinsically safe circuits of category Ex ib for
Equipment Groups IIC and IIB, the type of protection changes to Ex ib IIC T6 and Ex ib IIB T6.
Do not operate the probe in Zone 0 if connecting to an intrinsically safe circuit of category Ex ib.
Potential equalization
• Integrate the device into the local potential equalization.

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.
• Observe the safety instructions of the overvoltage protection.
–
+
+ 20 K).
3
4
4
5
. If the device is
rms