[RE-wrenches] SWH data logging

[Kelly Keilwitz, Whidbey Sun & Wind]

Carl,
Thanks for the info. Is data logging/collection possible with the Metrima
meters? There is a lot of information ­ in a language I don¹t understand ­
in the ³communication² section of the link you provided.

-Kelly


On 11/14/08 7:39 PM, "Carl Adams" <swingjunkie at gmail.com> wrote:

> Kelly,
> 
> I have installed several of the Metrima BTU/KWH meters for SHW.  The kit comes
> with a flowmeter, temperature sensors and wells (hot and cold), and a
> calculator, nicely integrated.  These are utility grade meters and more
> economical than the hardware you mentioned(dealer price $425).  Check out TCT
> Solar ( http://www.tctsolar.com/ the US distributor).  The only downside is
> that the units are BSP thread ( adapters to NPT are provided in the kit to
> drop the temperature wells and the flow meter into a 3/4" NPT line).  I guess
> if we deployed more of these in the US we'd have NPT as a standard option.
> Another use I've found for these units is they allow me to adjustment for
> offsets in the tank temperature sensor vs the actual hot water temperature ( 2
> - 10 degrees typical), and adjust the high limit set point accordingly.  I
> like the fact that customers can look at the kWh of energy delivered by the
> SHW system and easily convert to $$savings.  Larger units are available for
> higher flow rates/pipe sizes.
> 
> Cheers
> Carl
> 

 


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