Metrohm 732 IC Detector Bedienungsanleitung Seite 108

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Seitenansicht 107
4.5 Measurement parameters
732 IC Detector / 733 IC Separation Center
101
>PARAM
>PARAM/709 IC Pump
Settings for 709 IC Pump
This submenu appears only with "SETUP/peripherals/operation with
709 = on".
These settings are effective only if the 709 IC Pump is con-
nected to the 732 IC Detector and the remote control is acti-
vated with the <EXT.> key (see section 2.6.1).
>PARAM/709 IC Pump
flow 0.50 mL/min
0.015.00 mL/min
Flow rate
Flow rate of the 709 IC Pump.
>PARAM/709 IC Pump
Pmax 10.0 MPa
0.150 MPa
Maximum shutoff pressure
Maximum shutoff pressure for the automatic shutoff of
the pump drive of the 709 IC Pump to protect the
separating column against excessive pressure.
This limit value should be ca. 3 MPa (= 30 bar) above
the normal operating pressure of the separating column
used or correspond to the maximum admissible oper-
ating pressure of the separating column.
If the 709 Pump exceeds the specified limit value, the
pump drive is switched off within a pump cycle and
blocked, at the same time the bottom line of the display
of the 732 IC Detector shows the message "stopped:
YY-MM-DD HH:MM" with details of the time when the
pump was stopped. The LED "P
max
" on the 709 IC
Pump flashes, the shutoff pressure can be requested
under "P
actual
".
A 709 IC Pump stopped in this manner is put back into
operation as follows:
Press <EXT.> key to switch off remote opera-
tion.
Press <R/S> key to remove block. The LED
"P
max
" no longer flashes.
Press <EXT.> key to switch remote operation
back on.
>PARAM/709 IC Pump
Pmin 0.0 MPa
0.050 MPa
Minimum shutoff pressure
Minimum shutoff pressure for the automatic shutoff of
the pump drive of the 709 IC Pump to protect the IC
system when leaks occur or the eluent supply is inter-
rupted.
This limit value should be sufficiently far below the
normal operating pressure of the separating column
used. The entry of "0.0" switches the automatic shutoff
off.
If the pressure value of the 709 IC Pump is below the
specified limit value for a considerable length of time,
the pump drive of the pump is switched off and
blocked, at the same time the bottom line of the display
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