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340CF ELSD
Section 4 Operation
4-4
RST/BLN Screen
When RST is selected from the menu screen, it will display “RST
Baseline” for 5 seconds. Pushing
MENU
|
POWER
key during this
period will reset the ELS Detection signal to about 20mV. [Using
the
AUTOZERO
key can also reset the baseline.] After 5 seconds,
the display changes to BLN and displays the voltage offset by the
autozero function. This value is important to note for each set of
operating conditions. If the value is high, greater than 500mV,
the mobile phase is not being evaporated completely and the
temperature set points should be modified. Other contaminates
in the system can also affect this reading.
Menu Screen
Pressing the
MENU
|
POWER
key once, when no error conditions
exist, or twice times, if an error condition exists, enters the menu
screen.
Push
▲
or
▼
keys to select the menus.
Push
MENU
|
POWER
twice to return to the Home screen.
Available Menus
:
• [Spray Chamber Page] Sets Spray Chamber temper-
ature.
• [Drift Tube Page] Sets Drift Tube, optical cell and
exhaust tube temperatures.
• [Control Page] Sets Run/Standby mode, on/off Laser,
on/off Alarm.
• [Timer] Sets duration of the shut down time.
• [Filter Page] Sets the type and weight of filter for noise
filtration
• [Load Method Page] Loads one of ten methods.
• [Save Method Page] Saves a method
• [Calibration Page] Attenuates or amplifies the detector
output
• [Detector Gain Page] Changes Gain
• [Full Scale Page] Changes Full Scale
ELS Detection RST
20.000mV Baseline
ELS Detection BLN
20.000mV 221.22
<<MENU>>
[Spray Chamber Page]
Содержание 340CF ELSD
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