SDI-12 wiring

Connect the IDS-20d to a data logger by SDI-12 according to the figure below.

SDI-12 uses a shared bus with a ground wire, a data wire (indicated as SDI-12) and an optional +12 V wire.

NOTE  The connection with the 12 V power supply is optional and depends on the connected SDI‑12 master device (typically a data logger).

Figure 8 Wiring of the IDS-20d with a data logger via SDI-12