A1 5 DTR.APC.APR.ALW.03
(ENG)
Appendix Exd0.2
Blocking cover method before unscrewing and plumbing possibility is shoved at fig 20.
Because of the transmitter damage possibility, the ambient temperature should not be allowed
to become higher than 80°
°°
°C, even when there is no explosion risk.
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.
In danger zone don’t unscrew transmitter covers and don’t change the display position or its
back lighting.
Appendix Exd0.2
6. The electrical connection way of transmitters series: APC-2000ALW/XX,
APR-2000ALW/XX, APR-2200ALW/XX and APR-2000YALW/XX in
flameproof version
Ex power supply
see p.5..
_
+
TEST
short-circuit( jumper)
Fuse: In = 0,05A, Un = 250V
according to EN 60127
RD
Communicator
≥ 250Ω
Safe area
_
240 Ω
TEST
SIGNAL
_
+
.
32
VWX
MNO
DEF
YZ#
5 6
PQR
*
+/
9
GHI
8 0
@%&
1
4
JKL
7
STU
ABC
RE
F2
PV F4
F3 F4
PF
F1
+
Ro
Hazardous area
Fig. 2.
In case of transmitter calibration outside danger zone is possible communicator connecting to
<SIGNAL+> and <TEST+> terminals. Transmitter is furnished in communication resistor (R
D
= 240Ω),
closed with jumper at <SIGNAL-> and <TEST-> terminals installed by manufacturer. R
D
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 250Ω. Than <SIGNAL-> and <TEST-> terminals have to be open.
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