Agilent 1260 Infinity RID User Manual 71
Using the Refractive Index Detector
4
Operation of the Refractive Index Detector
Diode 1 signal
The RID signal is based on the ratio of the light level that is measured by
two photodiodes. The RID signal is zero if the two diodes show the same
light level. This parameter allows you to store individually the signal
measured by the diode 1.
Diode 2 signal
The RID signal is based on the ratio of the light level that is measured by
two photodiodes. The RID signal is zero if the two diodes show the same
light level. This parameter allows you to store individually the signal
measured by the diode 2.
Optical unit temperature
This parameter activates the storage of the optical unit temperature signal.
Polarity
This parameter activates the storage of polarity switching during the run.
Balance signal
This parameter activates storage of the diode balance signal during a run.
This helps to diagnose peaks that exceed the dynamic range of the RID, for
example in the case of extremely high concentrations/signals.
• Automatic Zero: This setting allows you to activate an automatic zeroing of
the signal before the run is started. If automatic purge is selected, the purge
will be performed before the automatic zero.
•Automatic Purge: This parameter can be used to do a purge of the reference
cell and wait additional time for baseline stabilization. It will be initiated
each time when the run is started. This should only be used if the content of
the reference cell is expected to degrade during a run. The automatic purge
will be finished before the autozero is performed and before the injection is
done.
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