Movement Of Reaction Disk (Model 902) - Hitachi 902 Service Manual

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Movement of Reaction Disk (Model 902)

Sample/rinse solution
The reaction sequence consists of processes carried out while the reaction disk provided
with 48 cells turns one revolution on 48 cycles.
The processes are classified into operation process and measurement process.
Process
Operation
Measurement
For ISE analysis, two cells are required for each sample (one cell for sample and the
other for internal standard solution).
No.
1 S pipetting into cell 1 and R3 pipetting into cell
18
2 Stirring of cell 18 at same position
3 12-step feed and R2 pipetting into cell 6
4 Stirring of cell 6 at same position
5 5-step feed and R1 pipetting into cell 1
6 Stirring of cell 1 at same position
7 Measurement at cell position 26 which passes
optical axis at intervals of 18 sec and data
acquisition
8 Aspiration of solution at cell position 7 into
electrode after 6-cycle turning
9 Rinsing of cell after lapse of 10-minute reaction
time at cell position 38 to 47
10 Feed of cell 48 to S pipetting position
11 Repetition of no. 1 to 10 on 18-second cycle
Cell rinse
Reaction disk
ISE aspiration nozzle
Work
Sample pipetting
Reagent pipetting/stirring
(R1, R2, R3)
Electrode aspiration
Cell rinse
Cell blank measurement
Reaction monitor photometry
Operation Sequence
Diluent/internal standard
Reagent nozzle path
Photometry
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Photometry
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5 - 3
ISE Cell Position
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1
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18
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7
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38 to 47
26
26
ISE
Internal
Sample
Standard
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