ProSoft Technology PTQ-AFC - Manual (Page 205)

PTQ-AFC ♦ Modicon Quantum Platform Diagnostics and Troubleshooting
Liquid and Gas Flow Computer for Hydrocarbon Products User Manual
ProSoft Technology, Inc. Page 205 of 259
June 23, 2011
Alarm Message Description Solution
Analysis
Characterization
error (v
 2.05)
Absolute difference between analysis
total and 1.0000 (100%) is greater
than the error tolerance, OR the
molar concentration sum is zero. Make sure that the sum of all molar
concentrations is within the error
tolerance of 1.0000 (100%).
Alarm Code values:
0 = No alarm
1 = Analysis total not normalized
2 = Analysis total zero
Compressibility
calculation error The compressibility calculation
resulted in error based on the input
values and configuration parameters
used. Check the input values and meter
configuration parameters.
Alarm Code values:
0 = No alarm
1 = Density exceeded reasonable
maximum (warning only)
2 = Pressure maximum found
3 = Non-convergence of procedure
"braket"
4 = Non-convergence of procedure
"ddetail"
Differential Pressure
Low The differential pressure value
transferred to the module is below
the DP Alarm Threshold parameter
configured in the Meter
Configuration. Check the input differential pressure
value transferred to the module. If the
value is correct, change the DP
Alarm Threshold parameter for your
project.
Flow Rate Low The flow rate value transferred to the
module is below the FR Alarm
Threshold parameter configured in
the Meter Configuration. Check the input flow rate value
transferred to the module. If the value
is correct, change the FR Alarm
Threshold parameter for your project.
Pulse Frequency
Low The pulse frequency value
transferred to the module is below
the Frequency Alarm Threshold
parameter configured in the Meter
Configuration. Check the input pulse frequency
value transferred to the module. If the
value is correct, change the
Frequency Alarm Threshold
parameter for your project.
High Water error Set if input water content is greater
than 99% (less than 1% oil). For this
condition, the emulsion is deemed to
be all water. Both volume and mass
fractions are set to zero. The module
does not perform any density
correction calculation, so the "default
standard density" value is assumed.
This alarm is applied for emulsion
liquids only. Check that the value of process input
"Water %" is reasonable
Alarm Code values:
0 = No alarm
1 = Emulsion is more than 99% water
Input Out of Range The input value is not within the
range specified in the meter
configuration window. Applies to
temperature, pressure, differential
pressure, flowing density, water
content, pulse frequency (v
 2.05).
Check that the input variable's
ranges (Meter Configuration /
Process Input
button) and the
process input itself have reasonable
values.