121
Reference Manual
00809-0300-4750, Rev CA
Advanced Diagnostics Configuration
March 2016
Advanced Diagnostics Configuration
6.7
Coated electrode detection
The
coated electrode detection
diagnostic provides a means of monitoring insulating coating
buildup on the measurement electrodes. If coating is not detected, buildup over time can
lead to a compromised flow measurement. This diagnostic can detect if the electrode is
coated and if the amount of coating is affecting the flow measurement. There are two levels
of electrode coating (EC). This diagnostic is only available on the Field Mount Transmitter.
Limit 1 indicates when coating is starting to occur, but has not compromised the flow
measurement.
Limit 2 indicates when coating is affecting the flow measurement and the meter should be
serviced immediately.
6.7.1
Turning coated electrode detection on/off
The
coated electrode detection
diagnostic can be turned on or off as required by the
application. If the advanced diagnostics suite 1 (DA1 option) was ordered, then the
coated
electrode detection
diagnostic will be turned on. If DA1 was not ordered or licensed, this
diagnostic is not available.
6.7.2
Coated electrode parameters
The
coated electrode detection
diagnostic has four parameters. Two are read-only and two
are configurable parameters. The electrode coating parameters need to be initially
monitored to accurately set the electrode coating limit levels for each application.
EC value
The
electrode coating value
reads the value of the coated electrode detection diagnostic.
LOI menu path
Field Mount: Diagnostics, Diag Controls, Elec Coating
Wall Mount: N/A
Traditional Fast Keys
1, 2, 3, 1
Device dashboard
2, 2, 5, 1, 5
LOI menu path
Field Mount: Diagnostics, Advanced Diag, Elec Coating, EC Current Val
Wall Mount: N/A
Traditional Fast Keys
1, 2, 3, 1, 1
Device dashboard
2, 2, 5, 6, 1
Summary of Contents for Rosemount 8750W
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