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Alarm
Alarm
Item
No.
description
Concentration
60
upper limit
Conducti
vity
Concentration
61
lower limit
Concentration
62
device upper
limit
Concentration
63
device lower
limit
Conducti
vity
65
Zero calibration
Cause
Sample water abnormality
Dirt in conductivity sensor
Connection failure in
conductivity sensor
connector
Conductivity sensor
expiration or failure
Internal analog circuit board
failure
Sample water abnormality
Dirt in conductivity sensor
Connection failure in
conductivity sensor
connector
Conductivity sensor
expiration or failure
Internal analog circuit board
failure
Connection failure in
conductivity sensor
connector
Conductivity sensor
expiration or failure
Internal analog circuit board
failure
Connection failure in
conductivity sensor
connector
Conductivity sensor
expiration or failure
Internal analog circuit board
failure
Mismatched calibration
results
Mismatching calibration
solution
Connection failure in
conductivity sensor
connector
Conductivity sensor
expiration or failure
Internal analog circuit board
failure
Corrective action
(*: Manufacturer service required)
Manually analyze sample water.
Clean conductivity sensor.
Inspect conductivity sensor
connection.*
Replace conductivity sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Manually analyze sample water.
Clean conductivity sensor.
Inspect conductivity sensor
connection.*
Replace electric-conductivity
sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Inspect conductivity sensor
connection.*
Replace electric conductivity
sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Inspect conductivity sensor
connection.*
Replace electric-conductivity
sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Reset calibration value and
reexecute calibration.
Check calibration solution and
reexecute calibration.
Inspect conductivity sensor
connection.*
Replace electric-conductivity
sensor.
Replace internal analog circuit
board (TW-ADC-01).*
8 TROUBLESHOOTING
Reference
page 138
page 144
page 138
page 144
page 138
page 144
page 138
page 144
page 53
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