The solenoid driven diaphragm metering pumps gamma/ X and XL use all the advantages of their patented, regulated solenoid drive. The power consumption of the solenoid coil (pressure information), and the position of the diaphragm, allow direct conclusions to be drawn about the dosing behavior at any time during the pressure and suction strokes.
By comparing target values with the measured values even gas bubbles can be precisely identified and selectively monitored. The air bubble detection and the model-based control behaviour of the solenoid-driven metering pump in combination with a special pressure valve enables air bubbles to be pre-compressed by the system pressure even before the actual pressure stroke and to be released into the metering line during the pressure stroke. The intelligent control ensures that exactly the required quantity is metered even during pressure compensation. It adapts the number of strokes and the duration of the compensation to the number and size of gas inclusions.
This ensures that the dosing capacity is reliably maintained even if several gas bubbles occur one after the other in the suction line. Compared to conventional solutions, the required dosing accuracy is maintained.
Prominent GmbH, Heidelberg
