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DTR.APC.APR.ALW.03(ENG)
Appendix Exd.ATEX
6. The electrical connection way of transmitter’s series: APC-2000ALW/XX,
APR-2000ALW/XX, APR-2200ALW/XX and APR-2000YALW/XX in
Exd version
Hazardous area
Safe area
+
short-circuit( jumper)
_
TEST
+
_
+SIGNAL
Ro 
_ TEST
Ex power supply
see p.5.
RD

F1
F2
F3
PF
RE
F4
DEF
GHI
@%&
JKL
MNO
PQR
+/
STU
VWX
YZ#
.
7
Fuse: In = 0,05A, Un = 250V
according to EN 60127
F4
PV
ABC
4
1
8
5
2
9
6
3
0
*
Communicator
Fig. 2.
i
In case of transmitter calibration outside danger zone is possible communicator connecting to
<SIGNAL+> and <TEST+> terminals. Transmitter is furnished in communication resistor (RD = 240Ω),
closed with jumper at <SIGNAL-> and <TEST-> terminals installed by manufacturer. RD resistor can be
use then, when it is necessary to communicate with transmitter from its terminals and the load resistance
(Ro) in current loop is lover then 240Ω. Than <SIGNAL-> and <TEST-> terminals have to be open.
In danger zone don’t unscrew transmitter covers and don’t change the display position or its
back lighting.
Blocking cover method before unscrewing and plumbing possibility is shoved at Fig.20.
It is not permitted to repair or otherwise interfere with the transmitter’s electrical circuits in any
way. Damage estimation and repair possibility may be assessed by the manufacturer or another
authorized party only.