Operating Manual PR 9268/60, PR 9268/70
Explosion protection
Seite 12
4.2
Explosion protection
Specifications according to the EC-Design Test Certificate for PR 9268/6xx, /7xx
On using safety barriers, the installation in
hazardous areas is possible
The standards EN 50014 and EN 50020 are
met
Intrinsic safety
II2G, EEx ib IIC T4, Ta < 125°C for the sensor
and Ta < 100°C for the connector
II2G, EEx ib IIC T3, Ta < 190°C for the sensor
and Ta < 100°C for the connector
Certificate
PTB 05 ATEX 2057 X
Safety barrier, example for II 2G (Fig. 4):
company Stahl, type 9001/02-093-003-101
For protection type intrinsic safety EEx ib IIC,
only for connection to certified intrinsic safe
electrical circuits with the maximum values:
U
i
=
I
i
=
P
i
=
When dimensioning the electrical specifica-
tions, the effective inductance Li and capaci-
tance Ci of the transducer are taken into
account.
18,6 V
6 mA
110 mW
Caution
:
The permission for the operating in explosive areas does only apply for the sensors
with metal protection hose, these are the types PR9268/(6,7)0(0-3)-000.
Sensors of type PR 9268/(6,7)0(4-7)-000, without metal protection hose, are not ap-
proved for the operating in explosive areas.
Concentrated inductivities and capacities in the supply circuit are not permitted.
To observe the explosion protection, a mechanically reliable installation of the sensor
at the measuring object must be ensured and a maximum acceleration of 10 g must
not be exceeded.
