32
FLOWSIC100 Flare-XT · Operating Instructions · 8023761/V1-0/2020-10 · © SICK Engineering GmbH
Installation FLSE100-XT
5.2.6.1
Specific conditions
Specific conditions of use denoted by X after the certificate number.
Specific conditions relating to all FLSE models
● As an option, offshore painting is used, where the layer thickness exceeds the limit of
0.2 mm for Gas group IIC (see Table 8 in IEC 60079-0:2011). In this case, the device is
marked with a warning label according to IEC 60079-1, Table 16 g).
Under certain extreme circumstances, the device may generate an ignition-capable level
of electrostatic charge. Therefore, the device shall not be installed in a location where
the external conditions are conducive to the build-up of electrostatic charge on such
surfaces. In addition, the device shall only be cleaned with a damp cloth (see clause
7.4.2 of IEC 60079-0:2011).
● The ultrasonic transducers are manufactured from titanium. In rare cases, ignition
sources could arise due to impact or friction sparks. The user must ensure the
enclosure and ultrasonic transducers are adequately protected against danger arising
from impacts or friction (see Section 8.3 of IEC 60079-0:2011).
● The lengths of the flameproof joints are sometimes longer and the widths of the flame
-
proof joints are sometimes shorter than required in Table 2 or 3 of IEC 60079-1: 2014.
Flameproof joints are not intended to be repaired. Contact the manufacturer when
dimensional information of flameproof joints is needed.
Specific conditions relating to the FLSE100-XT with intrinsically safe transducers
● The device contains a shunt zener diode, which requires connection to a barrier ground
in accordance with IEC 60079-14. The protective ground conductor terminals of the
device are to be connected to the potential equalization system of the installation area.
● The maximum permitted voltage in the safe area (Um) must not exceed the rated
125 V AC. Connect the device only to device which does not carry voltage higher than
125 V AC. Use SELV power supplies and device that meet the requirements of IEC/
EN 60950 or IEC/EN 61010-1.
● The maximum piezo-electric energy released by an impact on the ultrasonic transducers
exceeds the limit for Gas Group IIC specified in Clause 10.7 of IEC 60079-11:2011. The
user must ensure that the ultrasonic transducers are suitably protected against danger
from impact.
● The sender/receiver units with the intrinsically safe transducers may be installed into a
duct wall separating Zone 0 from another area, e. g. Zone 1. The user must ensure that
the material of the ultrasonic transducers shall not be subject to environmental
conditions, e.g. chemical exposure or abrasion, which might adversely affect their
enclosure and in particular their membrane.
5.2.6.2
Use of FLSE100-XT, depending on the temperature code and process temperature
Installation and use of sender/receiver units - electronics and transducers parts in the
same area
This area is a hazardous area, i.e. Zone 1 or Zone 2 in which an explosive atmosphere
exists under normal atmospheric conditions of:
– Specified ambient temperature -40 ... +70 °C for T4 or -40 ... +55 °C for T6,
Optionally minimum ambient temperature -50 °C
– Ambient pressure 80 kPa (0.8 bar) to 110 kPa (1.1 bar)
– Air with normal oxygen content, typically 21 percent by volume.
