Appendix A – Connecting the OTT Pluvio
2
S to an OTT datalogger
A.1 Connecting the OTT Pluvio
2
S to an OTT netDL or OTT DuoSens
via SDI-12 or RS-485 interface
Method A:
Connecting the OTT Pluvio
2
S via the SDI-12 interface (protocol
and physical interface: SDI-12). The maximum length of the cable is 70 m!
䡵
Connect the OTT Pluvio
2
S to the OTT netDL IP datalogger or to the
OTT DuoSens Compact Datalogger as shown in Figure A1.
Also refer to the OTT netDL/OTT DuoSens Operating Instructions.
Method B:
Connect the OTT Pluvio
2
S using the physical RS-485 interface
(SDI-12 protocol via physical RS-485 interface). The maximum cable length
is 1000 m.
䡵
Connect the OTT Pluvio
2
S to the OTT netDL IP datalogger or to the
OTT DuoSens Compact Datalogger as shown in Figure A2.
Also refer to the OTT netDL/OTT DuoSens Operating Instructions.
+
1
2
…
+
2
4
V
D
C
G
N
D
+
1
2
…
+
2
4
V
D
C
G
N
D
SDI-12
Input
A
4
3
1
2
OTT DuoSens
SDI-12
Input
C
4
3
1
2
OTT netDL
OTT Pluvio
2
S
1
2
3
4
5
6
7
8
OTT Pluvio
2
S
1
2
3
4
5
6
7
8
Fig. A1: Connecting the OTT Pluvio
2
S
to an OTT netDL or OTT DuoSens via
the SDI-12 interface.
The letters above the screw terminal strips
identify the connectivity options available
on the OTT netDL/OTT DuoSens.
For this application, only the 8-wire
screw terminal strip is needed.
+
1
2
…
+
2
4
V
D
C
G
N
D
+
1
2
…
+
2
4
V
D
C
G
N
D
RS-485
Input
A
4
3
1
2
OTT DuoSens
RS-485
Input
C
4
3
1
2
OTT netDL
OTT Pluvio
2
S
1
2
3
4
5
6
7
8
OTT Pluvio
2
S
1
2
3
4
5
6
7
8
Fig. A2: Connecting the OTT Pluvio
2
S to an
OTT netDL or OTT DuoSens via the RS-485
interface (SDI-12 protocol).
The letters above the screw terminal strips
identify the connectivity options available on
the OTT netDL/OTT DuoSens.
For this application, only the 8-wire
screw terminal strip is needed.
The GND connection represented
by the dashed line is necessary
only in case the OTT Pluvio
2
S and
the OTT netDL/OTT DuoSens are
powered by separate power supplies.
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