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B • Touch Screen Operation
Doc. 065291-01 3/09 215
B.4.4 Home Page Injection Valve Controls
The Inject and Load buttons select the position of the
injection valve. A dark background and white text on a
button indicates the current valve position. For details about
the valve positions, see Section 2.4.6
.
The
ELAPSED TIME field displays the amount of time since
the last injection.
B.4.5 Home Page Detector Controls
Conductivity Readings
The offset conductivity is displayed in large numbers above
the total conductivity. The offset conductivity is the total
conductivity minus the current offset.
To determine the offset, allow the system to equilibrate after
startup. At equilibration, the conductivity reading is the background conductivity
(the eluent conductivity before sample injection). Touch
Autozero to zero the
conductivity and offset this background reading from the total reading.
NOTE You can reverse the conductivity display to show the
total conductivity in large type, with the offset
conductivity below it in small type. Select this option on
the
MODULE SETUP page (see Section B.12).
Cell Heater Controls
The temperature of the cell can be set to between 30 °C and
55 °C, but must be at least 7 °C above the ambient
temperature. To set the temperature, touch the
Cell Heater
field and enter the desired temperature on the number pad.
To turn off the cell heater, set the temperature to 0. The display to the right of the
temperature setting indicates the heater status:
= cell temperature is at equilibrium
↑
cell temperature is rising
↓
cell temperature is falling
Off cell heater is off