Vaisala WAA151 Installation Manual Page 110

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Installation Manual __________________________________________________________________
108 __________________________________________________________________ M010114en-B
The following numbers refer to Figure 102 on page 107:
1 = QSE101 Shaft Encoder
2 = Stilling well
3 = Float
4 = Float tape
5 = Counter-weight
6. The QSE101 with SDI-12 output connects to a serial data
communication line configured according to the SDI-12
standard. The SDI-12 line uses one wire for data and is limited
to a maximum length of 60 meters. In MAWS the SDI-12 line is
connected through the DSI486 module. Install the DSI486
module inside the logger's cover on the MOD2 connector block.
Factory settings of DSI486's jumpers (X3:1-2, X3:3-4, X4:1-2
and X6:1-2) are suitable for this communication mode. For
installation instructions, see section DSI486 on page 118.
7. Modify the wiring at the logger according to the Table 18 on
page 114.
Table 15 Modified Wiring with QSE101
Wire
Color
Standard Connection
Pin at the Logger
(COM2)
Modified Connection Pin at the
Logger
Red B1 Move the wire from COM terminal
to the 0 V terminal.
Brown B2 Move the wire from COM terminal
to the +12 V terminal.
White B3 Leave as is. This wire is not in
active use.
Black B4 Leave as is. This wire is not in
active use.
Blue B5 Leave as is. This wire is used for
the SDI-12 data transfer.
8. Connect the signal cable to a receptacle that has the DSI486
communication module connected, normally COM2, at the
bottom of the equipment enclosure (see section Connecting
Cables on page 129).
9. Configure the sensor with MAWS Lizard. For more
information, refer to the separate Technical Reference.
DCU7110
For the location of the DCU7110 water level sensor, see section Water
Level on page 67. The sensor is installed on the sensor arm as shown
in Figure 89 on page 97.
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