<6. Function block parameters and Methods>
6-24
IM 12A01A02-72E
3rd Edition : Oct. 01, 2015-00
Table 6.12 DEVICE_STATUS_5 (FLXA21-SC: Sensor Warning)
Error
Description and Remedy
NAMUR
NE107
category
DIAGNOSIS
(Classic)
DIAGNOSIS
(Condensed)
DIAGNOSIS
EXTENSION
Conductivity too high Conductivity exceeds high limit. or
Resistivity exceeds low limit.
Check connections and cable.
Replace sensor. Adjust limits
parameter MEASUREMENT_
HIGH_LIMIT
S
Failure in
measurement
Invalid
process
condition
Sensor
Warning for
Measurement
Conductivity too low Conductivity exceeds low limit. or
Resistivity exceeds high limit.
Check connections and cable.
Replace sensor. Adjust limits
parameter MEASUREMENT_
LOW_LIMIT
S
Failure in
measurement
Invalid
process
condition
Sensor
Warning for
Measurement
Temperature too high Measured process temperature
exceeds the lower limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
S
Failure in
measurement
Invalid
process
condition
Sensor
Warning for
Measurement
Temperature too low Measured process temperature
exceeds the upper limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
S
Failure in
measurement
Invalid
process
condition
Sensor
Warning for
Measurement
1st temp. comp. error Temp. comp. matrix is not properly
defined.
Execute 'Check values' on the
display of FLXA21.
S
Failure in
measurement
Invalid
process
condition
Measurement
out of
Specification
2nd temp. comp.
error
Temp. comp. matrix 2 is not
properly defined.
Execute 'Check values' on the
display of FLXA21.
S
Failure in
measurement
Invalid
process
condition
Measurement
out of
Specification
Polarization detected Sensor surface fouled.
Conductivity above sensor
specification.
Clean or replace sensor. Adjust
process.
M
Failure in
measurement
Maintenance
demanded
Sensor
Warning for
Wellness
USP limit exceeded Conductivity exceeds USP limit.
Check ionic exchangers.
S
Failure in
measurement
Invalid
process
condition
USP
USP margin
exceeded
Conductivity exceeds USP
margin. Poor water quality.
Check ionic exchangers.
S
Failure in
measurement
Invalid
process
condition
USP
Conc. table error
Concentration table is not properly
defined.
Execute 'Check values' on the
display of FLXA21.
F
Configuration
not valid
Failure of
the device or
armature
Configuration
Error
2nd comp. matrix
error
Problem with calculating T.C. or
uncompensated value outside
matrix limits.
Check temp. compensation
configuration on the display of
FLXA21.
F
Configuration
not valid
Failure of
the device or
armature
Configuration
Error
1st comp. matrix
error
Problem with calculating T.C. or
uncompensated value outside
matrix limits.
Check temp. compensation
configuration on the display of
FLXA21.
F
Configuration
not valid
Failure of
the device or
armature
Configuration
Error
6.5
Status of Each Parameter in Failure Mode
Following tables summarize the value of parameters when LCD display indicates an Alarm or
status has some problems.