Instructions Specific To Hazardous Area Installation - Siemens SITRANS WS300 Operating Instructions Manual

3.8.2

Instructions specific to hazardous area installation

(Reference European ATEX Directive 94/9/EC, Annex II, 1/0/6)
Note
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 (I.S). The maximum speed of the sensor shaft shall
not exceed 1000 RPM (0785 m/sec). Regular inspection of the shaft seal and cover gasket is
required. The seals must maintain a rating of IP6X.
The following instructions apply to equipment covered by certificate numbers
Sira 06ATEX9303X, Sira 17ATEX2267X, IECEx CSA 170026X:
1. For use and assembly, refer to the main instructions.
2. The equipment is certified for use as Category 2D equipment and may be used in
hazardous zones 21 and 22 with dusts.
3. This equipment has a maximum surface temperature of T70°C (in a +55 °C ambient).
Refer to the applicable code of practice for selection of this equipment with respect to
specific dust ignition temperatures.
4. The equipment is certified for use in an ambient temperature range of -40 to +55 °C.
5. Any cable or conduit entries must meet the requirements of European Directive 94/9/EC
for Group II, Category 2D.
6. Cable should be selected in accordance with the applicable code of practice and such
that its insulation can withstand the maximum surface temperature of the enclosure
(T70 °C).
7. The equipment has not been assessed as a safety related device (as referred to by
Directive 94/9/EC Annex II, clause 1.5).
SITRANS WS300
Operating Instructions, 06/2018, A5E4505935-AA
Installing/mounting
3.8 Hazardous area installations
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