VEGA VEGAPULS 56V - Manual (Page 29)

VEGAPULS 56V 29
3.3 Approvals
When using radar sensors in Ex and StEx-
areas or on ships the instruments must be
suitable and approved for these explosion
zones and applications. The suitability is
checked by the approval authorities and is
certified in approval documents.
VEGAPULS 56 radar sensors are approved
for Ex zone 1 and zone 0, this is ensured by
two Ex-concepts.
Sensors with classification EEx␣ ia must be
operated for use in Ex-areas via the separa-
tors VEGATRENN 548V␣ Ex. They provide
intrinsically safe (ia) circuits.
Sensors with classification EEx␣ d␣ ia can be
directly connected to the signal conditioning
instrument or the processing system for use
in Ex-areas as the connection box of the
EEx␣ d-sensors is pressure tight encapsu-
lated and the ignition proof barrier is located
in the pressure tight encapsulated connec-
tion box. The resistance of the signal lines
must not exceed 15␣
Ω
per wire.
Please note the attached approval docu-
ments (yellow binder) when you want to use
the sensor in Ex-area.
Technical data
Test and approval authorities
VEGAPULS radar sensors are tested and
approved by the following monitoring, test
and approval authorities:
- PTB
(Physikalisch Technische Bundesanstalt -
Physical Technical Approval Authority)
- FM
(Factory Mutual Research)
- ABS
(American Bureau of Shipping)
- LRS
(Lloyds Register of Shipping)
- G L
(German Lloyd)
- CSA (applied)
(Canadian Standards Association)