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 *
_______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
