Installation For Equipment Category 2 And 3 (Zone 1 And 2) - E+E Elektronik EE100Ex Installationsanleitung

1.4

Installation for Equipment Category 2 and 3 (Zone 1 and 2)

For equipment category 2 and 3, the EE100Ex may only be powered via intrinsically safe power supply
devices or protective barriers.
The EE100Ex is a 2-wire, loop powered measurement device. Channel 1 (CH1) and channel 2 (CH2)
must be galvanic isolated from each other during operation.
The entire EE100Ex including the sensing probe must be installed within the same classified Zone /
category. The probe may not be installed in a Zone bushing.
EE100Ex wall mount: 1 channel with intrinsically safe power supply device:
hazardous area
Zone 1,2
temperature class: T4...T1
CH1
4-20mA ia
Fig. 1 Wall mount installation
EE100Ex with remote probe: 2 channels with intrinsically safe power supply device:
Fig. 2 Remote probe installation
6
non-hazardous area
intrinsically safe
supply unit
+ +
-
-
L+
L-
hazardous area
Zone 1, 2
temperature class: T4...T1
4-20 mA ia
controller
+
-
supply voltage
non-hazardous area
intrinsically safe
transmitter supply unit
+ +
4-20 mA ia
- -
+ +
-
-
L+
L-
controller
+
-
supply voltage
EE100Ex Safety Guide