Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of WikiWatershed, an initiative of Stroud Water Research Center designed to help people advance knowledge and stewardship of fresh water.
New to EnviroDIY? Start here

Reply To: Continous HAB monitoring

Home Forums Mayfly Data Logger Continous HAB monitoring Reply To: Continous HAB monitoring

#18737
Shannon Hicks
Moderator

    The calibration sheet from Turner was very accurate for the new sensor, so if you don’t want to buy expensive rhodamine standard right now, you’re probably fine to use the data from the sheet.  But we’ve found that the sensors tend to drift over time so we do quarterly recalibrations of the sensors to make sure they’re still accurate.

    Here’s a simple sketch to take 100 analog readings quickly and average them, then constantly repeat that, and printing all data to the serial port.  Then I just copy/paste the text from the serial port into Excel so I can do an analysis and overall average.