Operating Instructions MBA888
Operating Instructions MBA888 11/2017/Item No. 8001705 Page 2/6
MBA Instruments GmbH info@mba-instruments.de
1. Safety information – for use in explosion-hazardous areas (areas with potentially explosive atmosphere)
A level indicator of type MBA888 may be used in an explosion-hazardous area only if permitted by the
individual device specification.
•Check the device's rating plate in order to establish whether the approval (ATEX) applies.
An approved device will have the following marking:
II 1/2 D Ex ta/tb IIIC T100°C Da/Db
•Follow the regulations specified in the approval.
•Fit an equipotential-bonding lead.
•Prevent sparking as the result of metal parts striking each other.
•Wiring must be performed in accordance with Standard EN 60079-14.
•Follow the regulations of the EC Type-Examination Certificate.
•Comply with zone separation (see below).
•Connect electrical wiring only in a suitable terminal box.
2. User's responsibility
•Use the device only as described in these Operating Instructions. The manufacturer is unable to
assume any liability or warranty for other uses.
•Follow all local legislation, technical regulations and in-company directives applicable to the device's
place of use, in addition to these Operating Instructions.
•The housing cannot be opened.
•Comply with the voltage and temperature specifications on the rating plate.
3. Use
The MBA888 is used as a level switch for all types of bulk goods. The device may be used only for fixed
installation in industrial plant (large machine tools).
4. Conformity:
Explosion Protection, General Requirements ................. IEC 60079-0:2011
Device Dust Explosion Protection by Housing "t" ........... IEC 60079-31:2013
Explosion Protection, General Requirements ................. EN 60079-0:2012
Device Dust Explosion Protection by Housing "t" ........... EN 60079-31:2015
EMC ................................................................................. EN 61000-6-4: Sept. 2011 (industrial applications)
......................................................................................... EN 61000-6-2: Mar. 2006 (industrial applications)
Vibration:......................................................................... IEC 60068-2-6, IEC 60068-2-27
Low Voltage:.................................................................... EN 61010-1: 2011
Protection level Da for
dust Ex zone 20, 21 or 22
max. 80°C
Protection level Db for
dust Ex zone 21 or 22
max. 55°C
Zone separation
