7 eluent degasser, 8 high-pressure pump, Eluent degasser – Metrohm 940 Professional IC Vario ONE/ChS/HPG User Manual
Page 103: High-pressure pump
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7 Technical specifications
940 Professional IC Vario ONE/ChS/HPG (2.940.1240)
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95
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