8 TROUBLESHOOTING
148
40
Water
pressure
Concentration
upper limit
Rise in sample water
pressure
Check sample water pressure.
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
41
Concentration
lower limit
Drop in sample water
pressure
Check sample water pressure.
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
42
Concentration
device upper
limit
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
43
Concentration
device lower
limit
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
45
Zero calibration
Mismatched calibration
results
Reset calibration value and
reexecute calibration.
Mismatching calibration
pressure
Check calibration pressure and
reexecute calibration.
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
46
Water
pressure
Span calibration
Mismatched calibration
results
Reset calibration value and
reexecute calibration.
Mismatching calibration
pressure
Check calibration pressure and
reexecute calibration.
Connection failure in
pressure sensor connector
Inspect pressure sensor
connection.*
Pressure sensor failure
Replace pressure sensor.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
Alarm
No.
Item
Alarm
description
Cause
Corrective action
(*: Manufacturer service required)
Reference
Summary of Contents for TW-100
Page 1: ...Water Distribution Monitor TW 100 Instruction Manual CODE GZ0000080187H ...
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