Title: Wireless control of off-grid pumps
Allan,
Is the distance between tanks too far to consider adding that float
switch wire?
It really is the most reliable way.
What's the vertical lift from pump to tanks? If it's not too much, say
under 60-70 feet, you
could use a float valve in the tank and expansion tank w/ pressure
switch setup for on/off operation.
My fear with any wireless setup would be the complexity and thus the
reliability of it. And it needs power....
Good luck! Please follow up with anything you find....I'm tired of
running float wire....as much as 14,000
feet for one system (runs fine...for now)
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
www.four-winds-energy.com
Although no trees were killed in the sending of this message,
a large number of electrons were terribly inconvenienced.
Allan Sindelar wrote:
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.
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.
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.
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.
Allan Sindelar
allan_(at)_positiveenergysolar.com
NABCEP certified solar PV installer
Positive Energy, Inc.
3225A Richards Lane
Santa Fe NM 87507
505 424-1112
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