163
Reference Manual
00809-0300-4750, Rev CA
March 2016
Table 9-2. Advanced Process Diagnostic Messages
Error message
Potential cause
Corrective action
Grounding/Wiring
Fault
Improper installation of wiring
•See
“Wiring the transmitter” on page 19
Coil/electrode shield not
connected
•See
“Wiring the transmitter” on page 19
Improper process grounding
•See
“Process reference connection” on page 17
Faulty ground connection
•Check wiring for corrosion, moisture in the terminal block -see
“Process reference connection” on page 17
Sensor not full
•Verify sensor is full
•Enable empty pipe detection
High Process Noise Slurry flows - mining/pulp stock
•Decrease the flow rate below 10 ft/s (3 m/s)
•Complete the possible solutions listed under
high process noise” on page 166
Chemical additives upstream of
the sensor
•Move injection point downstream of the sensor or move the
sensor to a new location
•Complete the possible solutions listed under
high process noise” on page 166
Electrode not compatible with
the process fluid
•Refer to the Rosemount Magnetic Flowmeter Material
Selection Guide (document number 00816-0100-3033)
Gas/air in line
•Move the sensor to another location in the process line to
ensure that it is full under all conditions
Electrode coating
•Enable coated electrode detection diagnostic
•Use bullet-nose electrodes
•Downsize sensor to increase flowrate above 3 ft/s (1 m/s)
•Periodically clean sensor
Styrofoam or other insulating
particles
•Complete the possible solutions listed under
high process noise” on page 166
•Consult factory
Low conductivity fluids
(below 10 microsiemens/cm)
•Trim electrode and coil wires - see
•Use integral mount transmitter
•Set coil drive frequency to 37 Hz
Electrode Coating
Level 1
(1)
Coating is starting to buildup on
electrode and interfering with
measurement signal
•Schedule maintenance to clean electrode
•Use bullet nose electrodes
•Downsize sensor to increase flow rate above 3 ft/s (1 m/s)
Process fluid conductivity has
changed
•Verify process fluid conductivity
Electrode Coating
Level 2
(1)
Coating has built-up on
electrode and is interfering with
measurement signal
•Schedule maintenance to clean electrode
•Use bullet nose electrodes
•Downsize sensor to increase flow rate above 3 ft/s (1 m/s)
Process fluid conductivity has
changed
•Verify process fluid conductivity
1.
Only available on the Field Mount Transmitter.
Summary of Contents for Rosemount 8750W
Page 2: ......
Page 96: ...84 Reference Manual 00809 0300 4750 Rev CA Operation March 2016 Operation ...
Page 168: ...156 Reference Manual 00809 0300 4750 Rev CA Maintenance March 2016 Maintenance ...
Page 214: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 202 Wiring Diagrams ...
Page 218: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 206 Wiring Diagrams ...
Page 219: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 207 Wiring Diagrams ...
Page 220: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 208 Wiring Diagrams ...
Page 222: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 210 Wiring Diagrams ...
Page 223: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 211 Wiring Diagrams ...
Page 224: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 212 Wiring Diagrams ...
Page 225: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 213 Wiring Diagrams ...
Page 227: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 215 Wiring Diagrams ...
Page 228: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 216 Wiring Diagrams ...
Page 229: ...Wiring Diagrams March 2016 Reference Manual 00809 0300 4750 Rev CA 217 Wiring Diagrams ...
Page 263: ......