- 2 8 -
7.2
Countermeasures to Error Codes
Error
Cords
Possible Cause
Action
o F
Conductivity value of measured
Change measuring range
Full scale over
solution is beyond 10% of maximum
of measuring range
u F
Disconnection of sensor lead cable
Makesure towiresensorlead cable
・
・
Full scale under
Conductivity value of measured
correctly.
solution is below -10% of
Make sure of no loose screws of
・
minimum of measuringrange
terminals block at t h e b a c k s i d e o f
instrument
E-21
Resistance between T and T
Make sure to wire correctly between
・
・
Disconnection of
deviated fromfollowing range;
T and T without open .
(
)
temperature
1000
(at0
)
1400
(at100
)
Replacesensor.
Ω
℃
Ω
℃
〜
・
element
Disconnection of sensor lead cable
・
・
(
)
E-22
Resistance between T and T
refer toE-21
Short circuit of
deviated fromfollowing range;
Make sure to wire correctly between
・
〜
(
)
temperature
1000
(at0
)
1400
(at100
)
T and T without short
Ω
℃
Ω
℃
element
Disconnection of sensor lead cable
・
E-23
Solution temperature is beyond
Immerse sensor into the solution that
・
・
Temperature full
acceptable maximum 110
temperature is acceptable
(
℃)
scale over
Resistance between T and T
・
deviated fromfollowing range;
Refer to E-21
・
1000
(at0
)
1400
(at100
)
Ω
℃
Ω
℃
〜
E-24
Solution temperature is below
Immerse sensor into the solution that
・
・
Temperature full
acceptable minimum -10
temperature is acceptable
(
℃)
scale under
Resistance between T and T
・
deviated fromfollowing range;
Refer to E-21
・
1000
(at0
)
1400
(at100
)
Ω
℃
Ω
℃
〜
E-25
Temperature gap between
Make sure of the resistance value of
・
・
Abnormal
measured and reference is so
the temperature sensor.
temperature
much.
Make sure ofsolution temperature
・
calibration
with reference thermometer.
E-91
Defective action of AD converter.
Consult our dealers/distribuors.
・
・
E-92
Memories of calibrationvalue
・
System error
erased.
E-93
Wrongsetting of DIP. SW1
Change-over OFF
・
・
DIP.SW.No.1
