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Alarm
Alarm
Item
No.
description
Concentration
40
upper limit
Concentration
41
lower limit
Concentration
Water
42
device upper
pressure
limit
Concentration
43
device lower
limit
45
Zero calibration
Water
46
Span calibration
pressure
Cause
Rise in sample water
pressure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Drop in sample water
pressure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Mismatched calibration
results
Mismatching calibration
pressure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Mismatched calibration
results
Mismatching calibration
pressure
Connection failure in
pressure sensor connector
Pressure sensor failure
Internal analog circuit board
failure
Corrective action
(*: Manufacturer service required)
Check sample water pressure.
Inspect pressure sensor
connection.*
Replace pressure sensor.*
Replace internal analog circuit
board (TW-ADC-01).*
Check sample water pressure.
Inspect pressure sensor
connection.*
Replace pressure sensor*
Replace internal analog circuit
board (TW-ADC-01).*
Inspect pressure sensor
connection.*
Replace pressure sensor.*
Replace internal analog circuit
board (TW-ADC-01).*
Inspect pressure sensor
connection.*
Replace pressure sensor.*
Replace internal analog circuit
board (TW-ADC-01).*
Reset calibration value and
reexecute calibration.
Check calibration pressure and
reexecute calibration.
Inspect pressure sensor
connection.*
Replace pressure sensor.*
Replace internal analog circuit
board (TW-ADC-01).*
Reset calibration value and
reexecute calibration.
Check calibration pressure and
reexecute calibration.
Inspect pressure sensor
connection.*
Replace pressure sensor.*
Replace internal analog circuit
board (TW-ADC-01).*
8 TROUBLESHOOTING
Reference
page 71
page 71
157
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