FDS CONNECT

 

 

Access to Real-time Data

  • Access to Real-time Data
  • Secure data storage and management
  • Visualized data through charts and graphs
  • Export data to Microsoft Excel
  • Aerial overview with GPS-positioned instrument location
     

 

 

Real-time Alerts & Alarms

  • Provides the ability to instantly respond to changes in the field
  • SMS notifications sent directly to your phone and e-mail
     

Web-Based Platform

  • Cross-brand compatibility with multiple devices
  • No software installation
  • Accessible from any location with internet connection
  • Ability to give multiple team members access to the data

HARDWARE

YSI EXO2

  • Up to six sensor ports including conductivity and turbidity sensors.
  • Built in wiper that cleans sensor faces for improved operation.
  • Up to 90 days of battery life
  • Operates at depths from 0 to 250 m
  • Can work in temperature conditions of -50C up to 500C.
  • Smart sensors store calibration onboard.

Nexsens CB-450

 
  • Designed for use in various freshwater and saltwater environments.
  • Support for various monitoring sensors
  • Integrates with FDS Connect to send out real-time data.
  • Powered by three 10-watt 12 VDC solar panels.
  • Connect up to three sondes to a single buoy.

DEPLOYMENTS

 

Hydrologic Pile Rehabilitation Project Summary

 
Presentation from a 2019 Learning Labs Session Overview

A private company was hired to rehabilitate the pilings at a pier in Newport, Rhode Island. Rehabilitation work consisted of:Turbitity_Newport_RI_Tetra_Tech_Work_File_2016_3.jpg

  • Deploying turbidity controls (i.e., a turbidity curtain)
  • Removal of loose and spalled concrete from select pilings
  • Installation of re-enforced steel
  • Wrapping each pile in a fiberglass form
  • Pumping special mix concrete into each form to encase the pilings in concrete sleeves


This client was required to ensure that construction activities did not increase turbidity in the surrounding open waters. Field Data Solutions provided hardware, sensors, communication equipment, and a web-based user interface to create continuous real-time monitoring of the work site in order to prove effectiveness of engineering controls

Goal

Monitor Turbidity of open water surrounding contained work zone to prove effectiveness of engineering controls.


Design

Three daisy-chained YSI EXO 2 long-term monitoring water quality sondes were deployed from a solar-powered buoy to depths of 5, 15, and 30 ft. Each sonde was calibrated following stringent procedures to ensure accuracy at low NTU values found in the open waters at this project site. The buoy also contained a radio and or cellular transceiver that sent real-time data from each sonde to FDS Connect software and was then viewable to a remote user.

MonitoringTurbitity_buoy_model.jpg

At FDS’s headquarters in Pittsburgh PA, The FDS Data Manager coordinated the start and stop of field activities each day with the quality control engineer on site. Although the monitoring system was active during all work activities, specific attention was given to periods of concrete placement and other tasks that could increase turbidity. Turbidity thresholds were established based on work plan criteria. Those thresholds (i.e., 10 NTU above background,) were programmed into the application. Text and email notifications were sent automatically if any criterion was exceeded. FDS also monitored failures in communication gear and the system.

Conclusion

During the course of this project, the contractor maintained efficient controls and did not have exceedances of turbidity due to the operation. The turbidity curtain used was efficient and lead to a successful completion of the project.

 

Web User Interface Example (lines show variable turbidity)