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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. 
Community Activity See all activity
neilh20 replied to the topic Artifactual troughs and flickers in recorded stream depth in the forum Monitor My Watershed 1 year, 9 months ago
@d_manning just wondering if you have had any insights 🙂
Rachel Frantz became a registered member 1 year, 9 months ago
Rachel Frantz
@rfrantz
Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
In your 4th picture, it looks like the Grove cable plug may not fully be seated in the grove jack. Not sure about any of the other ones since the angles in the photos didn’t show them well, but be sure that it’s pressed all the way into the jack. And your second photo shows that your two SDI12 Grove jack voltage selection jumpers are both set t…[Read more]
WFUWater replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Here are a few pictures of our setup.
Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Can you describe how you’ve connected the sensors to your Mayfly, there are multiple ways to do it correctly with the adapters we offer and even more if you’re doing it a non-traditional way. Better yet, could you take a pictures of your setup showing how you’ve connect each of the sensors to the Mayfly?
Coolbaugh Twp Water Monitoring Project became a registered member 1 year, 9 months ago
Coolbaugh Twp Water Monitoring Project
@coolbaughtwpeac
WFUWater replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Thank you so much for the quick response! Could you detail how to make sure we are supplying the 12v to the ClariVue? That being said I am still a bit confused as to why the Hydros 21 would read as vacant when it is the only sensor connected during testing and it would run regardless of the voltage.
Shannon Hicks replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 year, 9 months ago
When the sensor is powered, you should be able to put the two probes of a voltmeter on the little screws on top of the screw terminal board where you’ve connected the ClariVue’s cable to the Mayfly. Put the black probe on the Gndscrew and the red probe on the V+ screw. You’ll know the sensor is being powered when the red LED on the bottom le…[Read more]
Shannon Hicks replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 year, 9 months ago
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…[Read more]
Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 year, 9 months ago
Both of those sensor models ship from their manufacturers with their SDI12 address set to ‘0’ (zero). In order for the Hydros21 sensor to work with the Mayfly logger in SDI12 mode, you MUST change the address of the sensor to anything other than zero (otherwise the sensors is in TTL output and not SDI12). It’s okay for the ClariVue sensor to r…[Read more]