Hitachi 902 - Adjustment of Cup Height for S.probe Descent; Probe Descent Position

14 - 15
Adjustment of cup height for S.probe descent:
(a) Details of operation
NOTE: Does not advance when S.STOP key pressed.
Probe descent position:
S1 -- sample disk outer row No. 1 position (empty sample cup)
S2 -- sample disk outer row No. 2 position (empty sample cup set on ø16 mm × 100 mm
test tube)
S3 -- sample disk inner row W1 position (empty sample cup)
(valid only for pos. 58, 59, 60)
Above positions are predetermined. Operator must set cups at 3 positions before the
adjustment.
(b) Extent of operation
1) Rotation angle : Reference value (pulse count) is subjected to no. of
correction pulses set on System Parameters screen, and
corrected pulse count shall be used.
2) Descent amount : Should descend to lowermost point (117 mm) at constant
speed.
End
Cell stop
Start
(rinse bath)
Descent at
constant speed: Descent
Acceleration/
deceleration: Ascent
Stops when abnormal
descent is detected,
and recorded as S1, S2, S3.
Conditions for stopping:
1) When STOP key is pressed.
2) When mechanism STOP level alarm occurs.
In case of 1), probe returns to rinse bath and
operation stops.
S3
S2
S1