Agilent 1260 Infinity RID User Manual 21
Introduction to the Refractive Index Detector
1
Early Maintenance Feedback
Early Maintenance Feedback
Maintenance requires the exchange of components which are subject to wear
or stress. Ideally, the frequency at which components are exchanged should be
based on the intensity of usage of the detector and the analytical conditions,
and not on a predefined time interval. The early maintenance feedback (EMF)
feature monitors the usage of specific components in the instrument, and
provides feedback when the user-selectable limits have been exceeded. The
visual feedback in the user interface provides an indication that maintenance
procedures should be scheduled.
EMF Counters
The detector provides one EMF counter for the reference liquid age. The
counter increments with the time that liquid remains in the reference cell, and
can be assigned a maximum limit which provides visual feedback in the user
interface when the limit is exceeded. The counter is reset to zero after the
reference cell is purged.
Using the EMF Counters
The user-selectable EMF limits for the EMF counters enable the early
maintenance feedback to be adapted to specific user requirements. The useful
counter time since last purge is dependent on the requirements for the
analysis, therefore, the definition of the maximum limits need to be
determined based on the specific operating conditions of the instrument.
Setting the EMF Limits
The setting of the EMF limits must be optimized over one or two maintenance
cycles. Initially, no EMF limit should be set. When instrument performance
indicates maintenance is necessary, take note of the values displayed by
reference liquid age counters. Enter these values (or a value slightly less than
the displayed values) as an EMF limit, and then reset the EMF counter to zero.
The next time the EMF counter exceed the new EMF limit, the EMF flag will be
displayed, providing a reminder that maintenance needs to be scheduled.
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