Metrohm 850 Professional IC Anion MCS LP-Gradient - Manual (Page 125)

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7 Technical specifications
850 Professional IC – Anion – MCS – LP Gradient
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7.8 High pressure pump
Type ￭ Serial dual-piston pump
￭ Intelligent pump head recognition
￭ Chemically inert
￭ Metal-free pump heads
￭ Materials in contact with 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 with standard pump head
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 only becomes active 2 minutes after sys-
tem start
￭ The pump is automatically shut down after 3 piston strokes below
the minimum pressure limit