[Esip-envirosensing] water temperature meter for lakes

[Skawinski, Paul]

Hi Andrew,

That sounds like a neat setup. Thanks for the reply.

Paul Skawinski
715-346-4853
Paul.Skawinski at uwsp.edu



From: Andrew Rettig <andrewrettig at gmail.com>
Sent: Monday, September 24, 2018 6:16 PM
To: Skawinski, Paul <Paul.Skawinski at uwsp.edu>
Cc: esip-envirosensing at lists.esipfed.org
Subject: Re: [Esip-envirosensing] water temperature meter for lakes

Hey Paul,

I have done temperature monitoring for some time with open source hardware and software.  I use Bigsense.io software.  I have labs on how to do the setup.  I get my sensors for free from Maxim semiconductor DS18B20 or you can order some water proof ones for a couple bucks.  Ltsense runs on the embedded device written in python.  The server is written in Scala.  I have a lab for the server setup as well.  I pay 5$ a month for the server on dropbox.  You can have the data stored locally but I almost always use a hardline, wifi, cellular type of setup.  The server is nice because of the restful api.  I use Datazar or Rstudio to pull the data from api and work with it on the fly.  I basically have my engineering students do all of this for my applied IoT class.

Just contact me if you want more info.  The advantages of this setup might also be that you can easily daisy chain the sensors.  They have a unique ID on them, these are digital semiconductor rugged sensors.  Then you can get temp at multiple depths pretty easily making basically a sensor instrument.

Andrew Rettig




On Mon, Sep 24, 2018 at 4:38 PM Skawinski, Paul via Esip-envirosensing <esip-envirosensing at lists.esipfed.org<mailto:esip-envirosensing at lists.esipfed.org>> wrote:
For many years, we have used a basic temperature meter made by Doric Instruments (VAS Engineering) to allow our Citizen Lake Monitoring Network volunteers to record temperature profiles in lakes from the surface to 30’+ (some down to 100’). The meter display box + a 50’ cable cost about $130. The company has let us know that they are ceasing production and repair of these units, so we need to find an alternative. We built a prototype to see if we could save money by creating our own from raw components. For about $65 in parts (plus assembly labor), we created a prototype using a probe + 50’ cable from HOBO. Cost savings would be substantially more if we ordered these parts in bulk. We are still in the process of refining this prototype (it certainly would NOT have a box that requires you to unscrew it to replace the battery), but I’m wondering if others have suggestions for lake temperature meters that have worked well for you. Thanks in advance!

Paul Skawinski
Coordinator – Wisconsin Citizen Lake Monitoring Network
UW-Extension Lakes Program
University of Wisconsin-Stevens Point
800 Reserve St. - TNR231
Stevens Point, WI 54481
715-346-4853
Paul.Skawinski at uwsp.edu<mailto:Paul.Skawinski at uwsp.edu>



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--
Dr. Andrew Rettig
Earth and Computer Scientist, Entrepreneur, Researcher
Engineering and Geology Department
University of Dayton

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