Agilent Technologies 1200 series, Справочное руководство

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228 Agilent 1200 Series Autosampler Reference Manual
7 Introduction to the Autosampler
Early Maintenance Feedback (EMF)
Maintenance requires the exchange of components in the flow path which are
subject to mechanical wear or stress. Ideally, the frequency at which
components are exchanged should be based on the intensity of usage of the
instrument 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-setable limits have been exceeded. The visual feedback in the user
interface provides an indication that maintenance procedures should be
scheduled.
EMF Counters
The autosamplers provides two EMF counters. Each counter increments with
autosamplers use, and can be assigned a maximum limit which provides visual
feedback in the user interface when the limit is exceeded. Each counter can be
reset to zero after maintenance has been done. The autosamplers provides the
following EMF counters:
Injection valve counter
This counter display the total number of switches of the injection valve since
the last reset of the counter.
Needle Movements Counter
This counter displays the total number of movements of the needle into the
seat since the last reset of the counter.