<6. Function block parameters and Methods>
6-22
IM 12A01A02-72E
3rd Edition : Oct. 01, 2015-00
Table 6.10 DEVICE_STATUS_3 (FLXA21-SC: Sensor Fault)
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
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Conductivity too low Conductivity exceeds low limit. or
Resistivity exceeds high limit.
Check connections and cable.
Replace sensor. Adjust limits
parameter MEASUREMENT_
LOW_LIMIT
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Temperature too high Measured process temperature
exceeds the lower limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Temperature too low Measured process temperature
exceeds the upper limit.
Check process temperature.
Check programmed sensor type.
Check connections and cable.
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Measurement
unstable
Measurement unstable
Check cable and connections.
Cable must not be able to 'vibrate'.
Check fluid stream for air bubbles.
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
Polarization detected Sensor surface fouled.
Conductivity above sensor
specification.
Clean or replace sensor. Adjust
process.
F
Failure in
measurement
Failure of
the device or
armature
Sensor
Failure
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
Checksum error
Contact your local sales office.
F
Hardware
failure
electronics.
Failure of
the device or
armature
Electric
Failure
EEPROM error
Write or read error in the
EEPROM.
Contact your local sales office.
F
Hardware
failure
electronics.
Failure of
the device or
armature
Electric
Failure
Sens. mod. not work Contact your local sales office.
F
Hardware
failure
electronics.
Failure of
the device or
armature
Electric
Failure
