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6.2 Countermeasures to error codes
Take following countermeasures when error codes show on display.
ERROR CODES CAUSES COUNTERMEASURES
The electrode is not Whether the level of sample・・
immersed in the sample liquid fluctuates,make sure to
oF / uF liquid . install electrode to be immerse
excessed measuring range in sample liquid.
shorted measuring range Miss-wiring of electrode Make sure of no miss-wiring ,・・
and relay cable. no loose screws of terminal
Especially disconnections block at the back side of(
of G M , R cable instrument and connector box.() )
Foul electrode Wash electrode up.・・
Electrode has been kept Response gets worse if the・・
dry for a longer period. glass m embrane dried.
E-11 Immerse the electrode in pure
Abnormal Response water a whole day and night,
Speed then calibrate it by standard
solutions again.
Temperature gap between After that the temperature・・
sample liquid and standard compensation elements of
solution is too much. electrode turns stable, then
calibrate it by standard
solution.
Foul electrode Wash electrode up.・・
Glass electrode broken Replace it.・・
E-12 Electrode internal solution Refill it.・・
Abnormal Sensitivity shorted.
of Electrode Electrode internal solution Fully replace it with new・・
degenerated. one.
()Such as discoloration,etc
Foul electrode Wash electrode up.・・
E-13 Glass electrode broken Replace it.・・
Abnormal Electrode internal solution Fully replace it with new・・
Asymmetric Potential degenerated. one.
()Such as discoloration,etc
pH standard solution Calibrate it with new standard・・
deteriorated. solutions.
Calibration with any other Calibrate it with standard・・
standard solutions but solutions of pH 4, 7, and 9
pH4,7,and9 JIS . JIS .() ()
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