Siemens SITRANS WS300 Operating Instructions Manual page 18

Installing/mounting
3.8 Hazardous area installations
8. Repair of this equipment shall be carried out by suitably trained personnel in accordance with
the applicable code of practice.
9. Components to be incorporated into or used as replacements in the equipment shall be
fitted by suitably trained personnel in accordance with the manufacturer's documentation.
10.If the equipment is likely to come into contact with aggressive substances, then it is the
responsibility of the user to take suitable precautions that prevent it from being adversely
affected, thus ensuring that the type of protection is not compromised.
– Aggressive substances: for example, acidic liquids or gases that may attack metals or
– Suitable precautions: for example, regular checks as part of routine inspections or
11.Product marking shall include the warning: Do not open when an explosive dust atmosphere
is present.
Special Conditions for Safe Use
The 'X' suffix to the certificate number relates to the following special condition(s) for safe use:
Per Sira 17ATEX2267X
• The enclosure shall be grounded to provide a discharge path for any electrostatic charges.
• The equipment shall be installed as per the installation drawing A5E03436733.
• This assessment does not cover any additional mechanical parts (e.g., conveyor belt etc) that
are added during installation.
• Proper maintenance is required to ensure that no dust shall accumulate on the surface of the
WS300 IS.
• The maximum speed of the sensor shaft shall not exceed 1000 RPM.
• Regular inspection of the shaft seal and cover gasket is required. The seals must maintain a
rating of IP6X.
• When installed in the hazardous area with type protection 'ia', without the optional
flameproof enclosure, the equipment shall be installed in a suitably-certified enclosure
providing a minimum ingress protection of IP54, which provides suitable control of
condensation and/or airborne pollution. The installer shall ensure that the maximum
ambient temperature of the equipment when installed is not exceeded.
• Cable or conduit entries shall comply with the requirements of the European Directive 94/9/
EC for Group II, Category 2D and maintain the overall IP rating of the enclosure.
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solvents that may affect polymeric materials.
establishing from the materials data sheet that it is resistant to specific chemicals.
Operating Instructions, 08/2020, A5E45050935-AB
SITRANS WS300