thanks for suggestion but i forget to mention that its not h2o. it includes the dirty water of a house i.e washroom,kitchen etc of a basement.Install two float switches in the underground tank.
Install one of them so its switch changes state when the tank is at the empty level.
Install the other so that its switch changes state when the tank is at the full level.
You can then use the two switches to turn on and off the pump at the appropriate water level.
Magic!
OK. Well how do you expect a meaningful answer on how to solve a technical problem when you leave out pertinent facts or change them in each post?thanks for suggestion but i forget to mention that its not h2o.
And if you need larger like 3/4 HP or 1 HP just use the switch to drive a contactor. My sump is a 3/4 HP float switch that came with the pump and is adjustable.
I'm using a 1/2hp pump with 1"pvc ,for 4feet tank depth to empty it from gray water and dark water.How deep is the tank? If this is a typical basement sump there are plenty of simple sump pump solutions available from home improvement stores. Most make for a simple economic solution. Not knowing your location it makes it difficult to offer a good solution. You have dirty water and no solids but the water can contain a wide range of chemicals. That pretty much rules out probes which rely on conductivity and tend to corrode. There are float switch arrangements for sumps that are plastic and impervious to what you find in a typical basement sump.
Ron
I would consider one of the float type switches mentioned. Mount it with a clamp about 2' up from the bottom with just under 2' cable out and it will have a little under 4' of travel.I'm using a 1/2hp pump with 1"pvc ,for 4feet tank depth to empty it from gray water and dark water.
I'm using a 1/2hp pump with 1"pvc ,for 4feet tank depth to empty it from gray water and dark water.Do you mean use the conduction that may be present in the Grey Water?
Not a very good idea.
if you have access and can lower a 1/2" pvc pipe with a closed off end into the well and situate two reed switches in the pipe at the required level, and use a float ring around this pipe with a magnet embedded, use each reed switch to turn a couple off relays on off, for the pump.
Max.
thanks a lot.A home made solution could be based on one of these
http://www.hamlin.com/specSheets/59630.pdf
http://cherryswitches.com/wp-content/blogs.dir/7/2012/07/MP2017_EN.pdf
http://www.digikey.ca/product-detail/en/MDSR-7-10-20/HE500-ND/199534
Using 1/2" PVC with a cap on the bottom so water does not enter, the reed switches would be set in the pipe at the sensing heights and the contacts be used to operate a low voltage relay that switches the pump.
A circular float around the pipe would carry the magnet.
Max.
thanks for the favour.!I would consider one of the float type switches mentioned. Mount it with a clamp about 2' up from the bottom with just under 2' cable out and it will have a little under 4' of travel.
Ron
by Jake Hertz
by Duane Benson
by Jake Hertz