Seametrics Turbo Turbidity Logger X-Series Integration Guide

Real-Time Water Quality Measurements

The Seametrics Turbo Turbidity Logger is a turbidity sensor with an integrated wiper and built-in data logging. The sensor is compatible with NexSens X-Series data loggers using the SDI-12 communication protocol and sensor interface. A user-generated script on NexSens X-Series data loggers is able to detect, log, and transmit all parameters available on the sensor. Parameter data is transmitted, in real-time, at a user-specified interval (e.g., 10 minutes) to the NexSens WQData LIVE Web Datacenter. There, data is stored on customizable dashboards with statistics and graphical interfaces for each parameter. Users can download and send data reports via Email, FTP, or an API. Below is information on the settings and wiring required to integrate these sensors with a NexSens X-Series data logger.

Seametrics Turbo Turbidity Loggers product page.

Figure 1: Seametrics Turbo Turbidity Logger integration with NexSens X-Series data loggers for real-time water quality measurements.




Compatible Models

Seametrics provides a single model of the Turbo Turbidity sensor that is compatible with X-Series data loggers.

Seametrics Turbo Turbidity Loggers product page

Figure 2: Seametrics Turbo Turbidity Logger




Sensor Integration

All default settings on the sensor will work with NexSens X-Series data loggers. Once the sensor is wired or connected properly, a user-generated script on the data logger will automatically detect the sensor.

1. Wiring

In nearly all applications involving NexSens integration, a waterproof UW8 plug will be added to the sensor cable. However, in other applications, when the sensor cable requires protection, it may need a connection to a NexSens UW-FWP or an external junction box.

Figure 3: NexSens UW-FWP J-pin out

Figure 4: NexSens UW8/UW-FWP Plug pin out


NexSens UW8/
UW-FWP Plug Pin
UW-FWP J Pin*NexSens UW8-FLx Wire Color**Seametrics Wire ColorSignal

*NexSens UW-FWP Field Wireable Plug
**NexSens UW Plug to Flying Lead Cable


2. Automatic Sensor Detection

The user must create a Generic SDI-12 script through the NexSens CONNECT software to communicate and gather measurements from the Turbo Turbidity sensor. SDI-12 sensors require a specific warmup time depending on the number of parameters to be measured. Determine the appropriate warmup time by communicating with the sensor in the CONNECT SDI-12 Tool:

  • Communicate Directly with an SDI-12 Sensor
    • By sending the ‘C’ command manually, the user can gather the measurement output and the number of seconds required to take a single reading.
    • The sensor should output Temperature (°C) and Turbidity (NTU).

After gathering a measurement and the warm-up time, follow the link below to review the process for creating a Generic SDI-12 script:


Run the Sensor Detection

Once the script is created, transfer and enable it on the data logger.


After the script is enabled, run a sensor detection to program the sensor onto the logger.


Read Sensor Configuration – Confirm Sensor Detection

After ~5-10 minutes, read the sensor configuration to confirm the Turbo Turbidity and other sensors have been detected on the data logger. Thoroughly review the parameter list to ensure all parameters are accounted for and are measured in the desired units. Let the unit gather a few readings to confirm accurate and reasonable parameter data.

Read Sensor Configuration


3. Setting up WQData LIVE

Once an X-Series data logger has finished a new sensor detection, it will automatically push the sensor configuration to the WQData LIVE web data center. Follow the three articles below to create a WQData LIVE account and a project/site. Then add the data logger to the project using the included claim code.



Real-Time System Application

Real-time water quality measurements from the Seametrics Turbo Turbidity Loggers are useful in various environmental monitoring applications.

Applicable Systems

Discover applicable uses for the Seametrics Turbo Turbidity Loggers.


Water Quality Measurements

Learn more about water quality measurements on the NexSens Blog Page.


Sensor Manual

For additional information on the Seametrics Turbo Turbidity Loggers, please refer to the Seametrics Turbo Turbidity Logger Manual.