Thermo Scientific Dionex ICS-2000, Operator'S Manual

Page: 136 / 390

ICS-2000 Ion Chromatography System
5-26
Doc. 031857-03 4/06
5. Slide the new cell assembly into the opening in the component panel until it
stops and the cell cover is flush against the component panel. The cell’s
electronic connector automatically plugs into a connector inside the ICS-2000
when you push the assembly into the opening.
6. Tighten the screws on the cell front cover fingertight.
7. Reconnect the inlet and outlet lines.
8. Turn on the ICS-2000 power.
9. Calibrate the new cell in Chromeleon or on the ICS-2000 touch screen
DIAGNOSTIC
page.Cell calibration of a new cell consists of three parts:
•
Running the offset calibration, which measures the output of the cell
electronics alone and determines an offset value to be applied to raw
conductivity readings.
•
Running the slope calibration, which measures the output of the cell
electronics when a built-in dummy cell, which provides a constant
conductivity reading of 21
µ
S, is automatically enabled. The slope value
is applied to raw conductivity readings.
•
Entering the cell constant measured at the factory. The ICS-2000 uses the
cell constant to determine the measured conductivity.
To calibrate the cell in Chromeleon:
a. Open the Wellness Panel (see Section 5.1.1 )
b. Under Electric Conductivity Cell Calibration , click Offset Cal.
c. When the offset calibration is complete, click Slope Cal.
d. Click Calibration Details . Under Conductivity Cell Cal Details , enter
the Cell Constant value printed on the front of the cell.
e. In the field next to the Download button, verify that Current is selected
and then click Download to download the new value to the ICS-2000.
f. To ensure that the new values are recorded in the ICS-2000 memory, do
not turn off the ICS-2000 power for at least 1 minute after downloading.