Patent ID: 9631616
Date: 2017-04-25
CPC Classifications: B01L,F04B,G01N

Claim:
1. A method for dosing an uptake or a release of a liquid, comprising the steps of: pumping a fluid with a pump connected to a fluid channel; measuring pressure changes of the fluid in the fluid channel with a flow sensor during the pumping of the fluid for obtaining flow rate data of the fluid; sending the flow rate data of the fluid to a controller, calculating with said controller a plurality of time intervals by comparing reserved flow rate data with calibration curves; and controlling one of the uptake or the release of the fluid in a tip connected to the fluid channel by transmitting a control signal from the controller to a pump drive indicating whether an output power of the pump drive is to be increased, decreased or remain constant, wherein control of the uptake or the release of the fluid in the tip is based at least in part on the calculated time intervals.