KROHNE BW 25 Ex II 1-2 G EN - Manual (Page 12)

3
INSTALLATION
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BW25
www.krohne.com 03/2010 - 4000862901 MA BW25-Ex-II1/2G-AD R01 en
Installation
3.1 Installation
Installation and setup must be carried out according to the applicable installation installation
standards (e.g. EN 60079-14) by qualified personnel trained in explosion protection. The
information given in the Installation and Operation Instructions and the Supplementary
Installation and Operation Instructions must always be observed.
Install level meters so that
• There are no external forces affecting the indicator part.
• The device is accessible for any visual inspections that are necessary, and can be viewed from
all sides.
• The nameplate is clearly visible.
• It can be operated from a location with secure footing.
3.2 Installation condititions
The device shall be installed such that mechanical forces from incoming flow or impact sparks in
the measuring system (e.g., from agitators) are prevented, particularly for displacement rods
made of titanium.
3.3 Tank socket
The tank socket for the meter must form a flameproof joint with the screw thread on the tank
such that the joint conforms to EN 50 018
3.4 Auxiliary connections on the reference vessel
The locking screw thread forms a flameproof joint with the reference vessel when given at least
five full turns. The screw must be removed to use the auxiliary connection. The tank must be
emptied prior to removing the locking screw!
Take appropriate measures to ensure that the auxiliary connection is flameproof. The fitting
screwed into the auxiliary connection must form a flameproof joint with the thread in the
reference vessel that conforms to DIN EN 60079-1 (note thread quality and thread length).
When using the auxiliary connection, the operator must ensure that no prohibited changes are
made to the process conditions (e.g. pressure, temperature, etc.).
CAUTION!
The manufacturer is not liable for any damage resulting from improper use or use other than the
intended purpose. This applies in particular to hazards due to insufficient corrosion resistance
and suitability of the materials in contact with product.
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