23
"OVER"
"OVER"
pH
a. Temperature > 120.0°C.
[Bring buffer/solution to a
lower temperature.]
[Replace temperature probe.]
b. No temperature sensor..
[Use a temperature probe.]
"OVER"
"UNDR"
pH
Temperature < -10.0°C.
[Bring buffer/solution to a
higher temperature.]
"OVER"
-10.0~
120.0°C
pH
pH>16.00 .
[Over Range or Recalibrate.]
"OVER"
0.0 ~ 60.0°C
a.pH-Cal-STAND
b.pH-Cal-SLOPE
a. Offset @ 7.00pH: mV>100mV
[email protected]: mV>108.3mV
b. New slope>ideal slope by
30%
[Use a new buffer solution.]
[Replace electrode.]
"UNDR"
0.0 ~ 60.0°C
a.pH-Cal-STAND
b.pH-Cal-SLOPE
a. Offset @ 7.00pH: mV<-100mV
[email protected]:mV< -91.7 mV
b. New Slope<ideal slope by
30%
[Use a new buffer solution.]
[Replace electrode.]
"UNDR"
-10.0~
120.0°C
pH
pH<-2.00
[Under Range or Recalibrate.]
EEPROM:
BAD
During power-on
Unit has failed its EEPROM test.
[Turn instrument OFF and back to
ON again.]
[Return for service. (see Warranty)]
ROM
:
BAD
During power-on
Unit has failed its ROM test.
[Turn instrument OFF and back to
ON again.]
[Return for service. (see Warranty)]
RAM
:
BAD
During power-on
Unit has failed its RAM test.
[Turn instrument OFF and back to
ON again.]
[Return for service. (see Warranty)]
IX. pH BUFFERS
