Hitachi 902 Service Manual page 27

Alarm
Alarm
Control
No.
4171 to ISE PREP.
4173
4181 to ISE SLOPE
4183
4191 to ISE I.STD
4193
Sub-
Category Level
code
92 1 WARNING Upon calibration, the slope
92 2 WARNING K
WARNING Cl : -39.9mV ≤ Slope value
92 3
93 1 WARNING (1) In the result of
93 2 WARNING K : (1)SLOPE < 45.0mV
93 3 WARNING Cl : (1)SLOPE < -35.0mV
94 1 WARNING The concentration of internal
94 2 WARNING K : C(IS) < 3.0mEq/L or
94 3 WARNING Cl : C(IS) < 80.0mEq/L or
2 - 15
Description
value is within the following
range.
Na : 45.0mV ≤ Slope value
≤ 49.9mV or
68.1mV ≤ Slope value
: 45.0mV ≤ Slope value
≤ 49.9mV or
68.1mV ≤ Slope value
≤ -35.0mV or
-68.1mV ≥ Slope value
calibration, the slope
value is within the
following range.
(2) The response
characteristic of
electrode is poor (in case
carry-over rate (A) is as
indicated below).
Na : (1)SLOPE < 45.0mV
(2)0.232 < A
(2)0.160 < A
(2)0.490 < A
standard solution (C(IS)) is
within the following range.
Na : C(IS) < 120.0mEq/L or
160.0mEq/L < C(IS)
7.0mEq/L < C(IS)
120.0mEq/L < C(IS)
(cont'd)
Remedy
•Make sure that the
standard solution
and reagent are set
properly.
•Make sure that the
standard solution is
free from
concentration or
deterioration.
•Make sure that the
electrodes (Na, K,
Cl) are within their
guaranteed life.
Refer to alarm
codes 92-1 to 3.
Same as above
Same as above
(1) Replace STD
and carry out
calibration
again.
(2) Replace the
internal
standard
solution.
Same as above
Same as above