NexSens Plug Connections for SonTek Current Meters
If users are connecting a SonTek current meter to an external device that is not an X-series data logger via a NexSens UW8 connector, use the pinout chart below.
Figure 2: NexSens UW8 plug pinout.
| NexSens UW8 Plug Pin Number | Signal |
| 1 | RS232 Tx* |
| 2 | Ground |
| 3 | RS232 Rx* |
| 5 | 12V+ |
| 6 | SDI-12 |
*RS232 signals are used to communicate with the sensor in the SonTek SL software to adjust settings and set the channel configuration.