Metrohm 709 IC Pump - Manual (Page 57)

6.1 Technical specifications
709 IC Pump
49
6 Appendix
6.1 Technical specifications
Type Serial dual piston with two valves
Pump capacity
Flow range 0.05...5.00 mL/min
Flow accuracy < 3.5 % (at 150 bar and 1 mL/min)
Flow constancy < 0.5 % (after unit warmed up)
Reproducibility of
eluent flow
± 0.1 %
Pressure
Pressure range 2.709.0010: 0...50.0 MPa (0...500
bar)
2.709.0110 (metal-free): 0...30.0 MPa (0...300
bar)
Resolution for pressure
indicator
0.1 MPa (1 bar)
Pressure measurement Piezoresistive measurement principle
Response time: 3 ms
Measurement volume: ca. 50 µ L
Accuracy of pressure
measurement
< 3 %
Residual pulsation 2.709.0010: < 7 %
2.709.0110 (metal-free): < 10 %
(measured at pump head at 2 mL/min and
100 bar)
Recorder output for
pressure indication
1 mV/MPa (1 mV/10 bar)
Time constant switchable: HIGH = 20 ms
LOW = 1 s
Safety shutdown
Function Automatic shutdown when upper and lower
pressure limits violated
Maximum pressure limit Adjustable between 0.1...50.0 MPa (1...500 bar)
Response time: 1 pump cycle
Minimum pressure limit Adjustable between 0.1 ... 50.0 MPa (1...500 bar),
inactive at 0 bar
Response time: 3 pump cycles
The cutoff function first becomes active 2 min
after the pump flow has been switched on with
the key.
Pump head
Pump head volumes Main piston: 40 µ L
Priming piston: 20 µ L