Siemens LDS 6 Operating Instructions Manual page 10

4
WARNING
No components marked with ATEX can be replaced by field service
technicians.
WARNING
The LDS6 intrinsic safe cable and other intrinsically non-safe cables
are not allowed to be drawn too close together, e.g. in the same
cable tray.
The cross duct sensor CD 6Ex meets all regulations specified in
the present EU regulations (LVD regulation 73/23/EEC and EMC
regulation 89/366/EEC) as well as those of the American and
Canadian markets (UL- and CSA regulations). The sensors may be
used in explosive regions as described in ATEX certificate DEMKO
05 ATEX 139648, provided that the ATEX barrier is correctly
installed.
Laser Safety
All lasers used by LDS 6 are of class 1. The emitted laser light is in
most cases invisible (near infrared) and the intensity is so low
that the unprotected eye is not damaged. However, if you look
directly into the beam with focusing optics (such as binoculars)
there is a risk of eye damage. LDS 6 has warning labels at appro-
priate positions according to SSI FS 1980:2 chapter 5.
Materials in the sensor pair
The sensor pair (transmitter and receiver) is built mainly using
stainless steel (SIS 2343-27) and Aluminium 231 (max magne-
sium content 0,5%). The O-rings and gaskets used are made from
VITON. The process interface is a wedge window made from
borofloat from SHOTT which is clamped in the sensor tube using
VITON gaskets. The circuit boards are varnished with humiseal. In
the case that the gas purging of the sensor fails the O-rings will
be the component that limits the temperature. They can with-
stand 215 °C.
Pressure Safety
In some applications the process can be over pressurized. Nor-
mally this is not a situation where the measurements will be ade-
quate. However, from a security aspect, if the over pressure is
more than 1100 hPa the high pressure windows version shall be
used. These are certified to 16 bars.
Installation Guidelines
ATEX manual for LDS 6
A5E01206710-02