aljamri
Member
In my home, the main water line pressure is not enough to go upto my tank ( 2 story building ). I used two tanks one down and the other on the roof, and a 1/2 Hp pump ( less than 3Amp ) in between. It will run until the upper tank full and its float closes the inlet and the pressure switch stops the pump.
all this works fine, until the upper tank start to decrease when we use water, the pump starts run/stop rapidly.
My project is to make a circuit to cut-off when the pump stops (upper tank full) wait a period of time (T) and cut-in again.
I decided to use PIC 12F629, but i do not how to tell the PIC when the pump stops. My electrical background told me to wind a conductor on the Phase conductor to get some indication (sort of CT) but still this will be a.c., regardless its amplitude, PIC will not accept it.
so any idea how to sense the current flow in a conductor ( less than 2 Ampere )?
Thanks
all this works fine, until the upper tank start to decrease when we use water, the pump starts run/stop rapidly.
My project is to make a circuit to cut-off when the pump stops (upper tank full) wait a period of time (T) and cut-in again.
I decided to use PIC 12F629, but i do not how to tell the PIC when the pump stops. My electrical background told me to wind a conductor on the Phase conductor to get some indication (sort of CT) but still this will be a.c., regardless its amplitude, PIC will not accept it.
so any idea how to sense the current flow in a conductor ( less than 2 Ampere )?
Thanks