Metrohm 940 Professional IC Vario ONE/SeS/PP/Prep 3 - Manual (Page 122)

7.7 Eluent degasser
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940 Professional IC Vario ONE/SeS/PP/Prep 3 (2.940.1530)
7.7 Eluent degasser
Material Fluoropolymer
Resistance to sol-
vents No restriction (except PFC)
Time to establish
vacuum < 60 s
7.8 High-pressure pump
Type ￭ Serial dual-piston pump
￭ Intelligent pump head recognition
￭ Chemically inert
￭ Metal-free pump heads
￭ Materials in contact with the eluent: PEEK, ZrO
2
, PTFE/PE
￭ Self-optimizing flow and pressure
Flow rate
Adjustable flow
range 0.001 - 20.0 mL/min
Flow increment 1 µL/min
Reproducibility
of the eluent
flow < 0.1% deviation
Pressure range
Pump 0 - 50.0 MPa (0 - 500 bar)
Pump head 0 - 35.0 MPa (0 - 350 bar) (applies for the standard PEEK pump head)
Residual pulsa-
tion < 1%
Safety shutdown
Function Automatic shutdown upon reaching the pressure limit values
Maximum pres-
sure limit ￭ Adjustable from 0.1 - 50 MPa (1 - 500 bar)
￭ The pump is automatically shut down at the first piston stroke
above the maximum limit value
Minimum pres-
sure limit ￭ Adjustable from 0 - 49 MPa (0 - 490 bar)
￭ The shutdown mechanism is inactive at 0 MPa
￭ The shutdown mechanism becomes active 2 minutes after system
start
￭ The pump is automatically shut down after 3 piston strokes below
the minimum pressure limit