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5-1 Front Panel
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2
□
6
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3
□
4
□
5
□
1
□
7
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8
□
10
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9
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11
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13
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12
Fig. 5.1 Front panel of
Shodex
RI-504
No.
Name of parts
Function
Power Switch
Press this key once to turn on or off the unit.
LCD Display
A 24-digit 2-row character display panel. This is used for
displaying or setting various parameters.
Start Up Sequence key
Press the key once to call the start-up sequence.
Purge Key
Press the key to turn the purge valve on or off to change
the flow path. When the valve is on, the LED above the key will
be lit and the eluent will flow through the reference cell chambers.
Press to turn off the valve.
Marker key
Press key to generate an event marker signal and add it
to the recorder output. During this function, the LED above the
key will be lit.
Leak LED
[Leak]
Illuminated when solvent leak is detected.
Auto Zero Key
Press the key to activate “Auto-Zero”.
During this function, the LED above the key will be lit.
□
2
□
1
□
4
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3
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5
□
6
5. Nomenclature and Function
S.Seq
Purge
Zero
Marker
Purge
S.Seq
Purge
Marker
□
7
Zero
