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  Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 months, 1 weeks 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?
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  Coolbaugh Twp Water Monitoring Project became a registered member 1 months, 1 weeks ago

  

  Coolbaugh Twp Water Monitoring Project

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  WFUWater replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 months, 1 weeks 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.
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  Shannon Hicks replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 months, 1 weeks 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]
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  Shannon Hicks replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 months, 1 weeks 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]
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  Shannon Hicks replied to the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 months, 1 weeks 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]
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  WFUWater started the topic Reading -9999 on all Sensors in the forum Mayfly Data Logger 1 months, 1 weeks ago

  Hello, I’ve recently been working on programming the MayFly data logger. After completing the code (or what I thought was completing the code) and connecting it to MonitorMyWatershed, I am reading -9999 from both the ClariVUE 10 sensor and the Hydros 21. I believe that both are physically connected properly. I think that it might be an issue…[Read more]
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  WFUWater became a registered member 1 months, 1 weeks ago

  

  WFUWater

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  nick replied to the topic Continous HAB monitoring in the forum Mayfly Data Logger 1 months, 1 weeks ago

  Shannon,

  Thank you for the confirmation and write up for the sketch setup. I just have the phycocyanin C-FLUOR. This is my first time soldering, so I’m practicing on another board before I commit on the MP screw terminal board.

  Have you notice big differences between the calibration sheet versus your manual calibration? And for the manual…[Read more]
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  Elliot Ma replied to the topic Clarivue10 data logging problems in the forum Mayfly Data Logger 1 months, 1 weeks ago

  Yes we are using a Mayfly v1.1! As for the 12v source, I am not too sure. I did not put the board together originally so it’s been operating how it’s been since it was put into place.

  I will be back soon to check on it again with a voltmeter. Could you explain how I can check if it’s using the correct 12v configuration?

  Much appreciated,

  Elliot
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