E+E Elektronik EE300E Series, Руководство по эксплуатации

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3.3 Assembly in category 1 (zone 0 / 20); Division 1
Only intrinsically safe power supply devices are approved to supply EE300Ex in category 1 or
Division 1.
In areas belonging to gas group IIC or Class I, Division 1, Group A,B, it must be ensured that
during installation and operation, the possibility of impact and friction sparks has been excluded
in rarely occurring fault situations.
Work on open transmitter must only be performed if it is guaranteed that no explosive atmos-
phere is present.
In category 1 or Division 1, the sensor line should be laid in an earthed metallic protective hose.
With Group III or Class II, III, ensure that there are no dust or fibers and flyings deposits in the
protective tube.
CH1 and CH2 must be galvanically isolated from one another during operation.
There is no display permitted in the gas hazard area EPL Ga for Group IIC or Class I,
Division 1, group A, B, and in the dust hazard area for groups IIIA, IIIB and IIIC or Class II, III.
The probe for wall mounting is not permitted to be used for Zone or Division bushing.
EE300Ex (wall mounting) 1 channel via intrinsically safe power supply device:
EE300Ex (with remote sensing probe) 2 channels via intrinsically safe power supply device:
4-20mA ia
+
-
L+
L-
+
-
+
-
CH2 CH1
4-20mA ia
4-20mA ia
+
-
L+
L-
+
- +
-
+
- +
-
CH2 CH1
no display with EPL Da; Db, Dc
and Ga IIC
no display in Class II, III and
Class I, Division 1, Group A, B
Hazardous location T6...T1
Hazardous location T4...T1
Unclassified location
zone 0 / 20
Division 1
zone 0 / 20
Division 1
Class I,II,III
Group A, B, C, D, E, F, G
zone 1 2 / 21 22
Division 2
zone 1 2 / 21 22
Division 2
Class I,II,III
Group A, B, C, D, E, F, G
up to T6 if EE300Ex is in
unclassified location.
Power supply
Power supply
Control
Control
The bushing must con-
form to the hazard
requirements of a zone
or Division implementa-
tion. The supplied screw
connection meets this
requirement!
intrinsically safe
transmitter supply unit
intrinsically safe
transmitter supply unit
Unclassified location