FLOW Ramp™ TECHNOLOGY
HOW IT WORKS
After the pre-infusion stage has completed, the computer determines the remaining time and volume for the infusion portion of the extraction. The Flow Ramp™ (any number between -1 and 1) determines the water flow rate and how the flow rate changes during the infusion portion of the shot whereby the remaining volume is dispensed in the remaining time.
A Flow Ramp™ of 1 results in a maximum flow rate acceleration during the extraction with the pump beginning at a flow rate of 0 cc/ sec and having the maximum flow rate acceleration such that the total volume desired is dispensed in the total specified extraction time.
A Flow Ramp™ of -1 results in a maximum flow rate deceleration with the pump beginning the extraction by dispensing water at the maximum speed and decelerating to a stop wherein the total shot volume is dispensed in the total specified shot time.
A Flow Ramp™ of 0 results in a constant flow rate during the extraction wherein the pump dispenses water at a constant speed until the total volume desired is dispensed in the specified shot time.
A Flow Ramp™ of 0.8 approximates the flow rate acceleration that occurs during a conventional 9 bar constant pressure shot of a medium roast coffee ground using an espresso grinder.
NOTE: WATER FLOW RATE IS NOT DEPENDENT ON EXTRACTION PRESSURE, but rather extraction pressure is a function of flow rate and coffee grinds resistance. 0 – 14 BAR, Instantaneous flow rate precision.