Micro Motion RFT9709 Manual de instrucciones Pagina 75

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Using ProLink
®
Software with Micro Motion
®
Transmitters
61
View Menu: Status
continued
Critical indicators
Configure Menu:
Transmitter Outputs
Configure Menu:
Transmitter Information
Configure Menu: EventsView Menu: Status
Configure Menu:
Characterize
Configure Menu:
Transmitter Variables
Table 7-6. Troubleshooting overrange conditions
Status indicators
Resistance at sensor
terminals Cause Corrective action(s)
Sensor Failure
Input Overrange
Open or short from
green to white
Moisture in sensor case or
junction box
Open or short left pickoff
If sensor junction box contains
moisture, check for leaking
junction box, conduit, or conduit
seals
If sensor junction box does not
contain moisture, return sensor to
factory
Open or short from
blue to gray
Moisture in sensor case or
junction box
Open or short right pickoff
Sensor Failure
Input Overrange
Zero Too Noisy
Values within ranges
listed in
Table 7-4
,
page 60
Transmitter cannot calculate
offset of flow signal
Eliminate pipe stress, vibration, or
mechanical noise
If using volume flow units, verify
density measurement
Verify flow calibration
Eliminate noise, then re-zero
Shut off flow, then re-zero
Sensor Failure
Drive Overrange
Open or short from
red to brown
Moisture in sensor case or
junction box
Open or short drive coil
If sensor junction box contains
moisture, check for leaking
junction box, conduit, or conduit
seals
If sensor junction box does not
contain moisture, return sensor to
factory
Sensor Failure
Drive Overrange
Input Overrange
Values within ranges
listed in
Table 7-4
,
page 60
Flow rate outside sensor limit Bring flow rate within sensor limit
Monitor flow rate
If using volume flow units, verify
density measurement
Verify flow calibration
Sensor Failure
Mass Flow Overrange
Volume Flow Overrange
Values within ranges
listed in
Table 7-4
,
page 60
Mass or volume flow rate outside
sensor limit
Sensor Failure
Drive Overrange
Density Overrange
Values within ranges
listed in
Table 7-4
,
page 60
Inappropriate density factors
Process density above 5 g/cc
for an RFT9739
Process density above 10 g/cc
for an RFT9712 or RFT9729
Process density above 2 g/cc
for an IFT9701 or IFT9703
Erratic process density has
caused flow tubes to stop
vibrating
Plugged flow tube
Perform density calibration or
density characterization
Bring density within sensor limit
Monitor density
Eliminate pipe stress, vibration, or
mechanical noise
Purge flow tubes
Sensor Failure
Temperature Overrange
Values within ranges
listed in
Table 7-4
,
page 60
Temperature outside sensor limit Bring temperature within sensor
limit
Monitor temperature
Open or short from
violet to yellow
Moisture in sensor case or
junction box
Open or short lead length
compensator
If sensor junction box contains
moisture, check for leaking
junction box, conduit, or conduit
seals
If sensor junction box does not
contain moisture, return sensor to
factory
Open or short from
violet to orange
Moisture in sensor case or
junction box
Open or short RTD
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