VEGA VEGAPULS 45 VBUS - Manual (Page 88)

88 VEGAPULS 42, 44 and 45 – VBUS
7.2 Approvals
When using radar sensors in Ex areas or in
marine applications, the instruments must be
suitable and approved for the explosion
zones and application areas.
The suitability is tested by approval authori-
ties and is certified in approval documents.
Intrinsically safe in Ex environment
For application in Ex environment,
VEGAPULS 42.CX to 45.CX sensors must be
powered from an intrinsically safe circuit. This
is ensured by VEGATRENN 548V Ex separa-
tors. The separator provides intrinsically safe
(ia) circuits. The resistance of the signal
cable must not exceed 15 Ohm per wire.
VEGAPULS 42.AX to 45.AC sensors are
approved for Ex Zone 1. VEGAPULS 42.CX
to 45.CX sensors are approved for Ex Zone
0.
Please note the attached approval docu-
ments when using a 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
(Physical Technical Test Authority -
Physikalisch Technische Bundesanstalt)
- FM
(Factory Mutual Research)
- ABS
(American Bureau of Shipping)
- LRS
(Lloyds Register of Shipping)
- G L
(German Lloyd)
- CSA
(Canadian Standards Association)