Endress+Hauser FTL51C Bedienungsanleitung Seite 13

Liquiphant M
Safety instructions:
General
Safety instructions:
Special conditions
Safety instructions:
Installation
Endress+Hauser
• Staff must meet the following conditions for mounting, electrical installation, commissioning and
maintenance of the device:
– Be suitably qualified for their role and the tasks they perform
– Be trained in explosion protection
– Be familiar with national regulations (e.g. IEC/EN 60079-14)
• Install the device according to the manufacturer's instructions and any other valid standards and regulations.
• Do not operate the device outside the specified electrical, thermal and mechanical parameters.
• Only install the devices in media for which the wetted materials have sufficient durability.
• The relationship between the permitted ambient temperature for the electronics housing, dependent on the
range of application, and the temperature classes is shown in Fig. 2 and Fig. 3.
• Modifications to the device can affect the explosion protection and must be carried out by staff authorized
to perform such work by Endress+Hauser.
• Sensors coated with non-conductive materials are suitable for use in gases of Group IIC if there is no
electrostatic charging of the sensors (e.g. friction, cleaning, maintenance, strong currents etc.). These sensors
are indicated by the warning sign "Avoid Electrostatic Charge".
F16 housing
• Avoid electrostatic charging of the plastic housing (do not rub dry).
• Comply with the installation and safety instructions in the Operating Instructions.
• Install the device according to the manufacturer's instructions and any other valid standards and regulations
(IEC/EN 60079-14).
• Connect the device using suitable cable and wire entries of protection type "Intrinsic safety (Ex i)".
• Continuous duty temperature of the cable Ta +5 K.
• To maintain the ingress protection of the housing IP66/67 install the housing cover and cable glands
correctly.
• Close unused entry glands with sealing plugs.
• The pertinent guidelines must be observed when intrinsically safe circuits are connected together acc.
IEC/EN 60079-14 (Proof of Intrinsic Safety).
• Connection of intrinsically safe PROFIBUS devices: 10 devices.
• Grounding the screen, see variant 2 (Fig. 3).
• Pay attention to 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.
• In case of additional or alternative special varnishing of the enclosure or other metallic parts the danger of
an electrostatic charging must be observed. Do not rub surfaces with dry cloth.
F17, T13 housing
• Install the device to exclude impact and friction sparks on the aluminium housing.
Intrinsic safety
• The device is only suitable for connection to certified, intrinsically safe equipment with explosion protection
Ex ia.
• The intrinsically safe input power circuit of the device is isolated from ground potential and has a dielectric
strength of at least 500 V
rms
Potential equalization
• The electrical apparatus must be integrated into the local potential equalization.
with respect to it.
KEMA 00 ATEX 1071 X / XA00158F-D
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