Emerson Micro Motion 1700 Configuration And Use Manual page 157

Alert num-
ber Alert title
A002 RAM Error (Core Pro-
cessor)
A003 No Sensor Response
A004 Temperature Over-
range
A005 Mass Flow Rate
Overrange
A006 Characterization Re-
quired
Configuration and Use Manual
Possible cause
The core processor has experienced
a memory error.
The transmitter is not receiving one
or more basic electrical signals from
the sensor.
This alert often occurs in conjunc-
tion with Alert 102.
The RTD resistance is out of range
for the sensor. The tube RTD resist-
ance is out of range for the sensor.
The measured flow rate is greater
than the maximum flow rate of the
sensor (ΔT greater than 200 µs).
Calibration factors have not been
entered, or the sensor type is incor-
rect, or the calibration factors are
incorrect for the sensor type.
Recommended actions
• Cycle power to the meter.
• Replace the core processor.
• Contact customer support.
• Check the drive gain and the pickoff
voltage.
• Check the wiring between the sensor
and the transmitter.
• Verify that internal wiring is secure and
that there are no internal electrical
problems.
• Check the integrity of the sensor tubes.
• Perform sensor coil resistance checks.
• Check your process conditions against
the values reported by the device.
• Verify temperature characterization or
calibration parameters.
• Verify that internal wiring is secure and
that there are no internal electrical
problems.
• Check the wiring between the sensor
and the transmitter.
• Contact customer support.
• If other alerts are present, resolve those
alert conditions first. If the current alert
persists, continue with the recommen-
ded actions.
• Check your process conditions against
the values reported by the device.
• Check for two-phase flow.
• Verify all of the characterization or cali-
bration parameters. See the sensor tag
or the calibration sheet for your meter.
• Verify the setting of the Sensor Type pa-
rameter.
• If Sensor Type=Curved Tube, ensure that
no parameters specific to Straight Tube
have been set.
• Verify that internal wiring is secure and
that there are no internal electrical
problems.
• Replace the core processor.
• Contact customer support.
Troubleshooting
149