Mac:
We've dealt with this. The best solution is altitude. If there is any
terrain on which you could put the tank, you save a lot of complexity.
Alternatively, can the well pump deliver into a pressure tank,
pre-pressurizing the water? This would also save a bunch of extra parts.
William
At 07:40 PM 12/14/2011, you wrote:
Wrenches, wrenchers and wrenchees,
I've got a pump control question. Working on a stand-alone pumping
station in Haiti. I am planning on using a Grundfos SQflex pumping system
with a Cu 200 and a float switch. Also needed on site, is a small
pressure pump to force water through a purification system. This part
won't take much power, and the cistern will sit full most of the time, so
I'd like to be able to take advantage of this. I am thinking that I would
like to figure out a control system that works off of the float switch
that when the float is up, the array leads disconnect from the pumping
system and connect to a charge controller that charges up some batteries
that will be used to power the pressure pump.
Has anyone designed anything like this? Any ideas on how to do this? I
think I can use an op amp to amplify the 15 mA signal on the float switch
to push a relay, but that may not be as reliable as it should be.
Thanks in advance.
Mac Lewis
--
Mac Lewis
"Yo solo sé que no sé nada." -Sócrates
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