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Pavel started the topic SDI-12 sniffer based on Raspberry Pi in the forum Miscellaneous 2 years, 1 months ago
Hello,
I have just finished my first post on my first blog 🙂 and wanted to share it with Enviro DYI community. The post is about tool for debugging SDI-12 communication.
https://evenparity.net/sdi-12-sniffer-based-on-raspberry-pi/
I am writing it partialy for myself so I don’t have such mess in my files, notes and ideas, but I hope some…[Read more]
Mary became a registered member 2 years, 1 months ago
Mary
@mlenno02
kakashinichi started the topic Connect Arduino data logger and Arduino slave in the forum Other Data Loggers 2 years, 1 months ago
Hello, I am new with SDI-12 recently, so I have a question that: Is it possible to connect an Arduino data logger (or Raspberry Pi data logger) to an Arduino slave (middleman)? I’ll be appreciate if anyone would answer for my curiosity.
kakashinichi became a registered member 2 years, 1 months ago
kakashinichi
@kakashinichi
dan@wachusett replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 2 years, 1 months ago
<div class=”bbp-reply-author”>@rogers1313</div>
<div></div>
<div>I have used the Hydros-21 for several years now and can add a bit to what Neil has mentioned. I also asked the engineers at Meter Group about temperature compensation and found their response unhelpful. My Hydros21 sensors output water depth that is highly affected by temperature (I…[Read more]
fisherba started the topic N2O sensor recommendations? in the forum Environmental Sensors 2 years, 1 months ago
Hi all,
I’m looking for recommendations for N2O sensors. We are looking for 0-100 ppm range and curious if others have any that they recommend. Hoping for sensor cost under $2000 and shipped from the US so we don’t have to navigate duty and institutional rules for international purchases. I will be using it in a soil gas application, but the…[Read more]
XIngong Li became a registered member 2 years, 1 months ago
XIngong Li
@xingong_li
Fernando Rojano became a registered member 2 years, 1 months ago
Fernando Rojano
@fernando-rojano
neilh20 replied to the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 2 years, 1 months ago
@rogers1313 – its a good “engineering question”. speaking as an electrical engineer and some one that has blogged on understanding traceability, measurement range, measurement resolution. measurement accuracy and total error band of measurement being different aspects of the measurement.
In short the Hydro 21 has calibrated measurements th…[Read more]
RogerS started the topic Hydros 21 CTD sensor calibration question in the forum Environmental Sensors 2 years, 1 months ago
Please help to clear up my thinking about these sensors.
This has probably been asked before, but after searching thru the forum I am not finding answers to this question.  We have the Hydros 21 CTD sensor. It looks like this sensor is calibrated at the factory and the sensor reports engineering values to the Mayfly datalogger.
Is this ass…[Read more]