<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
Allan,<br>
<br>
Is the distance between tanks too far to consider adding that float
switch wire?<br>
It really is the most reliable way.<br>
<br>
What's the vertical lift from pump to tanks? If it's not too much, say
under 60-70 feet, you<br>
could use a float valve in the tank and expansion tank w/ pressure
switch setup for on/off operation.<br>
<br>
My fear with any wireless setup would be the complexity and thus the
reliability of it. And it needs power....<br>
<br>
Good luck! Please follow up with anything you find....I'm tired of
running float wire....as much as 14,000<br>
feet for one system (runs fine...for now)<br>
<pre class="moz-signature" cols="72">Roy Butler
NABCEP Certified Solar PV Installer®
NYSERDA eligible PV & wind installer
Four Winds Renewable Energy, LLC
8902 Route 46
Arkport, NY 14807
607-324-9747
<a class="moz-txt-link-abbreviated" href="http://www.four-winds-energy.com">www.four-winds-energy.com</a>
Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.
</pre>
<br>
<br>
Allan Sindelar wrote:
<blockquote cite="mid:332C3099113A47D09D70081CA3D1C2EF@AllanLaptop"
type="cite">
<meta http-equiv="Content-Type" content="text/html; ">
<meta name="Generator" content="MS Exchange Server version 6.0.4630.0">
<title>Wireless control of off-grid pumps</title>
<!-- Converted from text/rtf format -->
<p><font face="Arial">I have an initial customer meeting next week
about solar water pumping. They want to use two wells in separate
locations to fill a large storage cistern for a community water supply.
The wells are in place, as is a tank on a hill. The water lines are in,
but nobody thought to run signal wires between the wells and the tank.
All locations are off-grid.</font></p>
<p><font face="Arial">I am comfortable with the design of all aspects
of the system except wireless signal circuits. I am posting to ask for
proven methods of communicating both tank-full shutoff signals to the
pumps (SQFlex with CU200 controller with remote terminals, most likely)
and low-tank alarm signal to an external receiver. </font></p>
<p><font face="Arial">The area may have wireless internet already in
place, depending on the topography of the specific sites and whether
they're line-of-sight to existing wireless access points in the region.
Cellular service is unlikely.</font></p>
<p><font face="Arial">I won't know much about the details of the job
until we meet. I would like to be prepared with some suggested
approaches. I would appreciate any assistance.</font></p>
<p><font face="g">Allan Sindelar</font>
<br>
<a moz-do-not-send="true" href="mailto:allan@positiveenergysolar.com"><u><font
color="#0000ff" face="g" size="2">allan_(at)_positiveenergysolar.com</font></u></a>
<br>
<font face="g" size="2">NABCEP certified solar PV installer</font>
<br>
<font face="g" size="2">Positive Energy, Inc.</font>
<br>
<font face="g" size="2">3225A Richards Lane</font>
<br>
<font face="g" size="2">Santa Fe NM 87507</font>
<br>
<font face="g" size="2">505 424-1112</font>
</p>
<pre wrap="">
<hr size="4" width="90%">
_______________________________________________
List sponsored by Home Power magazine
List Address: <a class="moz-txt-link-abbreviated" href="mailto:RE-wrenches@lists.re-wrenches.org">RE-wrenches@lists.re-wrenches.org</a>
Options & settings:
<a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org</a>
List-Archive: <a class="moz-txt-link-freetext" href="http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org">http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org</a>
List rules & etiquette:
<a class="moz-txt-link-abbreviated" href="http://www.re-wrenches.org/etiquette.htm">www.re-wrenches.org/etiquette.htm</a>
Check out participant bios:
<a class="moz-txt-link-abbreviated" href="http://www.members.re-wrenches.org">www.members.re-wrenches.org</a>
</pre>
</blockquote>
</body>
</html>