ABB AWT420, Инструкция по эксплуатации

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AW T4 20 |
U N I V ER S A L 4 - W I R E , D UA L- I N P U T T R A N SM I T T ER | O I/AW T4 2 0 - EN R E V. B 89
RDO diagnostics
NAMUR
icon Diagnostic
message
Cause Recovery action
S(n):
PT Failure The measurement taken from the temperature
sensor is invalid indicating that the
temperature sensor has failed, or the
associated connections are either open-circuit
or short-circuit. Visually inspect the sensor/temperature sensor for signs of damage.
A damaged sensor must be replaced.
Cycle power to the transmitter.
If Process Temperature Failure persists, contact local service
organization.
S(n):
D.O Conc
Meas Error The RDO sensor cannot provide a valid
dissolved oxygen measurement due to a sensor
error. Power cycle sensor.
If Dissolved Oxygen Concentration Measurement Error persists,
contact local service organization.
S(n):
%Sat Meas Error The RDO sensor cannot provide a valid %
saturation measurement due to a sensor error. Power cycle sensor.
If % Saturation Measurement Error persists, contact local service
organization.
S(n):
Calibrating Sensor calibration is in progress. Diagnostic clears once calibration is complete.
S(n):
Internal
Comms Error The RDO sensor cannot provide a valid
dissolved oxygen measurement due to an error
in the communication between sensor and
sensor cap. Ensure that the sensor cap is installed and properly seated.
S(n):
Cap Removed The sensor cap has been removed from the
RDO probe or is not being recognized.
A valid measurement cannot be made without
a sensor cap
Ensure sensor cap is fitted correctly.
S(n):
Cal Failed The most recent sensor calibration has failed,
calibration coefficients have not been updated
and the previous values continue to be applied. Ensure that the sensor is clean and fully submerged in the solution.
Repeat calibration, if Calibration Failed persists then consider
replacing the sensor.
S(n):
User Cal Expired Recalibration of the RDO sensor is required.
The sensor deteriorates over time and
recalibration is required to maintain accuracy.
Perform a calibration using ADS430205 RDO probe calibration kit.
S(n):
Factory Cal
Expired Recalibration of the RDO sensor is required.
The sensor deteriorates over time and
recalibration is required to maintain accuracy.
Perform a calibration using ADS430205 RDO probe calibration kit.
S(n):
Sensor Warm-up The RDO sensor is warming up and cannot
provide a valid dissolved oxygen measurement
until the internal electronics have stabilized. Diagnostic clears once the internal electronics have stabilized.
If
Sensor Warm Up
persists, contact local service organization.
S(n):
Sensor Warning PV measured from the RDO probe but does not
meet normal quality criteria.
The sensor has sustained moderate damage, or
the recommended lifespan has been reached.
Visually inspect the sensor for signs of damage.
If the probe appears to be in good condition and is within its
recommended lifespan, it may help to clean the sensor and the optical
lens.
If there are signs of damage or
Sensor Warning
persists, contact local
service organization.
S(n):
Cap Expired The sensor cap within the RDO probe has
reached or exceeded its expiry date.
The cap may continue to operate but its
accuracy degrades and cannot be guaranteed
to meet specification.
Replace sensor cap using ADS430204 ABB RDO probe sensor cap
replacement kit.
S(n):
Replace Cap The sensor cap within the RDO probe reaches
its expiry date within 4 weeks.
After its expiry date the cap may continue to
operate but its accuracy degrades and cannot
be guaranteed to meet specification.
Replace sensor cap using ADS430204 ABB RDO probe sensor cap
replacement kit.