| 摘要 |
A pump control device for an air controlled double diaphragm (AODD)pump comprises a pump housing, a pumping chamber within the housing, at least two diaphragms and a diaphragm coupling shaft 4, the diaphragms arranged within the chamber and operatively connected to the diaphragm coupling shaft, the control device comprising at least one ring magnet10, 12 mounted within the diaphragm coupling shaft and a sensor apparatus. There is a sensor apparatus located within the pump housing and arranged to detect the proximity of the at least one ring magnet and the diaphragm coupling shaft to the sensor apparatus. A programmable controller is arranged to receive and respond to information from the sensor apparatus so as to control the end stroke and reciprocation of the coupling shaft. A method of operation of the pump and the pump control device is also described. |
