UltiMate 3000 Series:
NCS-3500RS and NCP-3200RS
Page
112
Operating Instructions
5.5.2.2 NC Pump with a Classic Flow Meter
Overview
The NC pump has two transducers for the primary pressure and one transducer for the
system pressure. The primary pressures are controlled in such a way that the partial flows
through the fluidic resistors (
→
Fig. 54, nos. 5a and 5b) result in exactly the desired total
flow and solvent composition.
The picture illustrates how the pump operates with a Classic flow meter. For more
information about the operating principle of the NC pump, see page 222.
Fig. 54: Functional blocks of the NC pump with Classic flow meter
No.
Element
1a / 1b
Pressure-controlled pump, left (A) and right (B)
2a / 2b
Dual-piston pump, left / right
3a / 3b
Filter unit, left / right
4a / 4b
Primary pressure transducer, left / right
5a / 5b
Flow restrictor, left / right
6
Column pressure transducer
7
Y piece
8
Flow meter outlet, capillary connection to the other modules of the HPLC
system
9
Capillary connecting the column pressure transducer to the Y piece
10
Flow meter module
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