Project Overview

The Carleton College Department of Geology is enhancing classroom learning and student/faculty research with real-time water quality data. A National Science Foundation Grant funded the purchase and deployment of a water quality buoy on Upper Lyman Lake. The new buoy logs temperature data at four depths every 15 minutes. Once per hour, the data is transmitted by radio telemetry to the college’s geology lab. Temperature profile data is posted to a website for student and professor access.

 

System Description

NexSens configured a data logging and radio telemetry buoy system to record and transmit lake temperature profiles continuously. The NexSens MB-300 is a rugged, 300-pound buoyancy monitoring buoy designed for a wide range of environmental monitoring applications. Real-time data options include cellular and radio telemetry. An onboard solar panel kit charges the data logger battery for continuous, unattended monitoring applications.

A NexSens 4100-iSIC data logger with radio telemetry transmits data from the lake site to the geology laboratory at hourly intervals. iChart software processes the data and posts it to a web-based data center, WQData, where both historic and real-time data can be viewed using a standard web browser. The NexSens system enables Carleton geology students and professors to monitor the lake continuously and easily share data online.

Equipment

NexSens CB-450 Data Buoy

The NexSens CB-450 Data Buoy is designed for deployment in lakes, rivers, coastal waters, harbors, estuaries and other freshwater or marine environments.


NexSens T-Node FR Thermistor String

The NexSens T-Node FR thermistor string provides high precision temperature measurement in an addressable and connectorized assembly.


NexSens iChart 6 Software

iChart software simplifies and automates many of the tasks associated with acquiring, processing, analyzing and publishing environmental data.


NexSens WQData LIVE Web Datacenter

WQData LIVE is a secure web datacenter providing an online interface for viewing environmental data. It offers 24/7 instant access to project data using any web browser.