Installation
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 59
Subject to change without notice
WARNING: Risk of ignition through impacts or friction
The ultrasonic transducers of FLOWSIC600-XT are made from titanium.
The meter body and part of the electronic enclosure may be made from
aluminium.
In rare cases, ignition sources due to impact and friction sparks could occur.
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The user must ensure that the electronic housing, the meter body and the
ultrasonic transducers are suitably protected against danger from impact or
friction.
This is particularly important when theFLOWSIC600-XT is installed in a zone
0 location (see clause 8.3 EN 60079-0).
WARNING: Ignition hazard through impacts
The maximum piezoelectric energy that can be released through impacts on
the ultrasonic transducers exceeds the limit for Gas group IIC specified in
§10.7 of EN60079-11:2012.
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The user must ensure the ultrasonic transducers are protected adequately
against hazards caused by impacts.
NOTICE:
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The FLOWSIC600-XT does not withstand the insulation test described in
§ 6.3.13 EN 60079-11:2012 (apart from the electrically isolated inputs
and outputs). See → p. 57, §3.4 and → p. 132, §9.1 “Connection diagrams for
operation of the FLOWSIC600-XT in accordance with ATEX/IECEx” or
→ p. 141, §9.2 “Connection diagrams for operation of the FLOWSIC600-XT in
accordance with CSA” for correct electric installation.
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Contact the manufacturer when you need the dimension specifications for
the flameproof joints. (See §5.1 EN 60079-1).
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The exchangeable backup battery and its electric connections are rated as
intrinsically safe according to IEC/EN 60079-11:2011. The backup battery
may also be used in the non-intrinsically safe FLOWSIC600-XT versions
whereby the exchange can also be made in the danger area.
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The FLOWSIC600-XT with intrinsically safe inputs and outputs (Exia version)
contains a shunt Zener diode barrier. Grounding the FLOWSIC600-XT must
satisfy the requirements for grounding intrinsically safe power circuits in
compliance with IEC 60079-14.
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When 3/4" NPT cable inlets are used, components screwed in, e.g. cable
glands, must be installed in the grip with at least 5 thread turns and
tightened with a minimum torque of 90 Nm (67 lbf ft). Use additional
suitable sealants, e.g. PTFE sealing tape, to attain IP protection class IP 66
or IP 67.
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