polarized
Member level 4
circuit to detect water flow in motor pump?
Hi all,
I have an electric 12V pump intended for water pumping, but when the water tank is empty it pumps air through the pipe which is not good and there is a possibility that the electric pump can be damaged due to overheating if it works in this abnormal situation more then 2 minutes aproximately. Is it possible to detect the air flow and somehow differentiate between normal water flow and forbiden air flow by the usage of a simple sensor or some different method? I have constructed an electronic circuit which permits a programable maximum working time of the pump from the first moment it starts to draw current, but this method is not so intellegent, so I would like to differentiate between water flow and air flow.
Regards.
Hi all,
I have an electric 12V pump intended for water pumping, but when the water tank is empty it pumps air through the pipe which is not good and there is a possibility that the electric pump can be damaged due to overheating if it works in this abnormal situation more then 2 minutes aproximately. Is it possible to detect the air flow and somehow differentiate between normal water flow and forbiden air flow by the usage of a simple sensor or some different method? I have constructed an electronic circuit which permits a programable maximum working time of the pump from the first moment it starts to draw current, but this method is not so intellegent, so I would like to differentiate between water flow and air flow.
Regards.