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8020216/19YN/V3-0/2020-12| SICK
O P E R A T I N G I N S T R U C T I O N S | DUSTHUNTER SP100 Ex-3K
Subject to change without notice
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PRODUCT DESCRIPTION
3.3.2
Protection concept
Sender/receiver unit protection concept
The mechanical construction of the DUSTHUNTER SP100 Ex-3K is intended for use in
explosive atmospheres of category 3G and 3D. The enclosure is dust-tight and the surface
temperature limited. Thus the device corresponds to ignition protection type “t” (protection
by enclosure). In addition, ignition protection type “nR” (steam safety) is used. This ignition
protection type prevents explosive gases penetrating into the electronics enclosure. The
device uses a laser to perform its measuring task. To avoid ignition of a potentially explosive
gas mixture by optical radiation, the laser module meets the criteria of the type of
protection inherently safe optical radiation “op is” according to EN60079-28.
Control unit protection concept
The MCUDH Ex-3K control unit is intended for use in explosive atmospheres of category 3G
and 3D. Ignition protection types “ec” (increased safety) and “t” (protection by enclosure)
are used. In addition, ignition protection types “nA” and “nC” are used on the versions with
integrated power supply unit.
