Remote Metering / Data - Logging [RE-wrenches]

Joe Felker joe.felker at alumni.stevens-tech.edu
Thu Jul 10 05:23:07 PDT 2008


Check out Hobo dataloggers from Onset Computer:
http://www.onsetcomp.com/

Joe

wratterman at sunenergypower.com wrote:
> 
> 
> Hello all,
> 
>  
> 
> I am interested in what current products you recommend for metering and 
> data logging for remote projects.
> 
>  
> 
> Our projects are all in quite difficult places to get to, in developing 
> world countries.  
> 
>  
> 
> Quite understandably, the biggest problems we encounter relate to the 
> early demise of the battery banks.  But, without good monitoring, it 
> becomes a guessing game as to the core reason.  Generally, the reasons, 
> in order of likelihood are (a) facility using more load than agreed to, 
> (b) generator not being run long enough on hybrid systems, or something 
> broken on the generator that we don’t find out about, and (c) faults 
> in the PV / charge controller system.
> 
>  
> 
> Our metering will need to allow us to differentiate between these 
> causes.
> 
>  
> 
> The typical Bogart meter does not really accomplish everything.  On our 
> Outback systems, we will be installing the new Flex Net, but as I have 
> yet to work on one, I am not sure if this will do everything.  
> (particularly – can we set it up to give us AC kwhr usage?)
> 
>  
> 
> Most of our locations are NOT connected to the internet, but some are, 
> and some have cell phone access.  But, we would need decent data logging 
> / dump to laptop capabilities since this will be the main default case.
> 
>  
> 
> Thanks for any suggestions or leads.
> 
>  
> 
> Walt
> 
>  
> 
> Walt Ratterman
> 
> SunEnergy Power International
> 
>  
> 
> 11 Laurel Lane South     Washougal, WA   98671
> 
> (360)-837-3680   â–ª   fax (360)-837-1315   â–ª   Skype  Walt-Mobile
> 
>  <mailto:wratterman at SunEPI.org> wratterman at SunEPI.org   â–ª    
>  <http://www.sunepi.org/> www.SunEPI.org
> 
>  
> 
>  
> 
>  
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>  
> 
> 
> [Non-text portions of this message have been removed]
> 



Joe Felker
Senior Electrical Engineer
Pfister Energy
NABCEP Certified Solar PV Installer


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