| 摘要 |
<p>A beer dispensing arrangement comprises electronic control circuitry (56) having in circuit reed switches (42) and a Hall effect sensor (54), the circuitry (56) also having in circuit a beer pump (24) for moving beer from a supply to dispensing taps (30,32). The reed switches (42) are operated by a magnet in a float (34) while the sensor (54) detects movement of a magnet (52) controlled by a pressure sensitive diaphragm (48). During dispense, with the float (34) being sensed in its uppermost position, the sensor (54) reacts to the pressure in the line and the control circuitry (56) operates by way of the sensor (54) to automatically control the pump (24) and maintain pressure in the line at a desired operating level. Regardless therefore of the condition of either tap (30,32), the arrangement provides a substantially constant rate of dispense.</p> |
