KROHNE OPTISWITCH 3x00 EX II1_2D-II2D-IP66T DE - Manual (Page 18)

English
Safety instructions – English
1. Area of applicability
These safety instructions apply to the vibrating level switches OPTISWITCH 3100 C VF31/ 3200 C
VF32/ 3300 C VF33 acc. to the EC type approval certificate BVS 04 ATEX E 268 (certification
number on the type label).
2. General
The vibrating level switches OPTISWITCH 3*00 C VF3* are used for monitoring or control of levels
even in areas with combustible and dust generating solids.
The vibrating level switches OPTISWITCH 3*00 C VF3* encompass sensor, process fitting element
and signal conditioning unit.
The vibrating level switches OPTISWITCH 3*00 C VF3* are suitable for use in hazardous
atmospheres of combustible dusts, for applications requiring instruments of category II 1/2D or II 2 D.
If vibrating level switches OPTISWITCH 3*00 C VF3* are installed and operated in hazardous areas,
the general Ex mounting instructions and these safety instructions have to be observed.
The operating manual and the Ex mounting instructions and standards for electrical equipments have
to be observed.
The installation of Ex systems must always be carried out by trained personnel.
The requirements of EN50281-1-2 e.g. in relation to dust and temperatures have to be fulfilled.
Category 1/2 D instruments
The electronics housing is installed in hazardous areas in areas requiring instruments of category 2 D.
The process fitting element is installed in the separating wall which separates areas requiring
instruments of category 2 D or 1 D. The sensors with the mechanical fixing element is installed in
hazardous areas of category 1 D.
Category 2 D instruments
The electronics housing and the sensor with the mechanical fixing element is installed in hazardous
areas in areas requiring instruments of category 2 D.
Flame proofing identification
: II 1/2 D or II 2 D IP66 T.., see thermal characteristic
18 30106-DE-050912 OPTISWITCH-STEX