3-2
IMPORTANT: The RUN and STANDBY keys act as toggle keys:
You enter RUN Mode by pressing [RUN] and
you exit RUN Mode by pressing [RUN].
You enter STANDBY Mode by pressing [STANDBY] and
you exit STANDBY Mode by pressing [STANDBY].
In each action above you must confirm your intention by pressing [2] or [1] for yes or no,
respectively, then press [ENTER] to confirm your choice.
To enter Run Mode, follow the instructions below.
If required, return to the Main Menu by pressing [MENU] or by exiting RUN or STANDBY
Mode. The display must read as follows:
Please select instrument mode
[RUN] [STANDBY] [MENU]
Press [RUN] to enter Run Mode. The Buffer Pump will operate through two cycles and the
instrument will "initialize the baseline current" which means it will ready itself to calibrate.
Two or more calibration cycles will be run automatically. The Sipper moves out of the Sample
Chamber and enters the Calibrator Well or other preset calibrator station. Calibration standard is
aspirated into the Sipper, which then returns to the Sample Chamber and dispenses the standard.
After the measurement, the Buffer Pump flushes the standard from the chamber.
The following display messages will appear during initialization:
Entering RUN mode, please standby
Initializing mechanism...
Entering RUN mode, please standby
Stabilizing baseline current...
Entering RUN mode, please standby
Stabilizing calibration...
NOTE: In Run Mode, the unit calibrates itself every 15 minutes or every 5 samples. It will
sometimes self-calibrate several times until a stable calibration is established. In Section 5.3
you will learn to change some default calibration parameters to better fit your application.
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