6.3.1.3 Non-incendive
Connection drawing (FM)
The FM connection drawing number (A5E52277176) listed on the device nameplate can be
downloaded from our website:
Product page (www.siemens.com/sitransLR500)
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6.3.2 Further information related to hazardous area installations
• For power demands see Loop power (Page203).
• For wiring requirements follow local regulations.
• Use approved cable gland/conduit seal to maintain Type 4X, Type 6, IP66, IP68 ratings.
• For hazardous area approvals, see Certicates and approvals (Page176).
6.3.3 Instructions specic to hazardous area installation
6.3.3.1 Specic conditions of use (denoted by X after the certicate number)
Specic conditions of use
• Parts of the enclosure may be non-conducting and may generate an ignition-capable level of
electrostatic charge under certain extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be subjected to external conditions
(such as high-pressure steam), which might cause a build-up of electrostatic charge on non-
conducting surfaces.
• The enclosure shall be protected from mechanical impact or friction.
• For dust application, apply 3 to 4 turns of PTFE tape to seal conduit entries.
Dust ignition proof / Dust protection by Enclosure Ex 't'
• The equipment shall only be powered by an SELV source; not exceeding 30Vdc.
• Disconnect power source before opening in the presence of explosive concentration of
ignitable gas.
• The supply to the SITRANS LR510, LR530, LR550, LR580 equipment shall be rated for a
prospective short-circuit current of not more than 1.5 kA and shall be protected by a suitably
rated fuse.
Connecting
6.3Hazardous area installations
SITRANS LR500 series with mA/HART
Operating Instructions, 03/2024, A5E51099898-AA 59
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