US 12,220,694 B2
Pipetting device and method
Michael Keller, Zurich (CH); and Thomas Geiges, Mannedorf (CH)
Assigned to TECAN TRADING AG, Mannedorf (CH)
Filed by TECAN TRADING AG, Mannedorf (CH)
Filed on Dec. 15, 2020, as Appl. No. 17/122,470.
Claims priority of application No. 19217577 (EP), filed on Dec. 18, 2019.
Prior Publication US 2021/0187493 A1, Jun. 24, 2021
Int. Cl. B01L 3/02 (2006.01)
CPC B01L 3/021 (2013.01) [B01L 2200/147 (2013.01); B01L 2300/14 (2013.01); B01L 2300/1888 (2013.01); B01L 2400/0487 (2013.01); B01L 2400/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. Pipetting device (10) for pipetting a liquid driven by a gaseous working medium, the pipetting device comprising:
at least one pipette connector (13) adapted to attach a pipette (21) at a connection opening (14),
at least one pressurizing and/or suctioning pressure source (11, 11′, 11″),
a gas flow connection (12) between said connection opening and said at least one pressurizing and/or suctioning pressure source (11, 11′, 11″),
a flow restriction (15) defining at least a section of said gas flow connection,
a first sensor (16) configured to measure a quantity indicative of the temperature of the flow restriction,
a heat storage block (19), wherein the flow restriction (15) is formed by an inner wall of the heat storage block or wherein the flow restriction (15) is formed by a flow restriction element (15′) embedded in the heat storage block, and
wherein said first sensor (16) is a temperature sensor thermally connected to said heat storage block.