Metrohm 792 Basic IC User Manual

Page 86

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4.3 Systems

792 Basic IC

77

Flow correction

Factor for correction of the difference between

displayed and actual flow rate of the high-

pressure pump.

Range:

0.9

...

1.09

The flow correction is determined by measure-

ment of the actual flow rate with the aid of a

measuring cylinder as follows:

Flow correction

=

Displayed flow rate
Measured flow rate

Cell constant

Cell constant of the conductivity cell for correct

display of the absolute conductivity. Enter the

cell constant printed on the detector block into

this field.

Range:

0.1

...

99.9 /cm

For a precise determination of the cell constant,

pump a calibration solution of known conduc-

tivity through the IC system, observe the dis-

played conductivity and change the cell con-

stant until the correct conductivity value is

displayed.

<Break times>

Possibility for changing the break times for in-

jection valve

Valve

and suppressor module

Sup-

pressor

.

These values should only be changed after

consulting the Metrohm Service.


Alarm stops
The

Alarm stops

tab of the hardware settings window defines the events

for which the 792 Basic IC is stopped immediately. At an alarm stop,

high-pressure pump and peristaltic pump are stopped immediately; the

running determination and the active sample queue are also stopped.

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