Problem
Possible causes
Recommended actions
Inaccurate referred
density reading
•
Inaccurate density measurement
•
Inaccurate temperature measurement
•
Inaccurate pressure value
•
Incorrect reference conditions
•
Incorrect API table selection
•
Verify the line density value. If it is not ac-
curate, see
•
Verify the line temperature value. If it is
not accurate, see
•
Ensure that the application is configured to
use the appropriate temperature source.
•
Ensure that the pressure source is config-
ured correctly, that the external pressure
device is operating correctly, and that both
devices are using the same measurement
units.
•
Ensure that reference temperature and ref-
erence pressure, if applicable, are config-
ured correctly.
•
Ensure that the selected API table is appro-
priate for the process fluid.
10.10
Concentration measurement problems
Problem
Possible causes
Recommended actions
Significantly incorrect
concentration meas-
urement after loading
matrix
•
The wrong temperature or density unit
was configured when the matrix was loa-
ded
•
Set the temperature and density units to
the units used when the matrix was built,
then reload the matrix. For custom matri-
ces, contact Micro Motion.
Inaccurate concentra-
tion measurement
reading
•
Inaccurate density measurement
•
Inaccurate temperature measurement
•
Incorrect reference conditions
•
Incorrect matrix data
•
Inappropriate trim values
•
Verify the line density value. If it is not ac-
curate, see
•
Verify the line temperature value. If it is
not accurate, see
•
Ensure that the application is configured to
use the appropriate temperature source.
•
Ensure that reference temperature is con-
figured correctly.
•
Ensure that the appropriate matrix is ac-
tive.
•
Ensure that the matrix is configured cor-
rectly.
•
Ensure that the matrix curve fit is good.
•
Adjust the extrapolation limits for the ac-
tive matrix.
•
Adjust measurement with a concentration
offset trim. See
Troubleshooting
152
Micro Motion
®
Compact Density Meters (CDM)
Summary of Contents for CDM100M
Page 8: ...Getting Started 2 Micro Motion Compact Density Meters CDM ...
Page 12: ...Before you begin 6 Micro Motion Compact Density Meters CDM ...
Page 20: ...Configuration and commissioning 14 Micro Motion Compact Density Meters CDM ...
Page 26: ...Introduction to configuration and commissioning 20 Micro Motion Compact Density Meters CDM ...
Page 110: ...Integrate the meter with the control system 104 Micro Motion Compact Density Meters CDM ...
Page 116: ...Operations maintenance and troubleshooting 110 Micro Motion Compact Density Meters CDM ...
Page 124: ...Transmitter operation 118 Micro Motion Compact Density Meters CDM ...
Page 194: ...Using the transmitter display 188 Micro Motion Compact Density Meters CDM ...
Page 208: ...Using ProLink III with the transmitter 202 Micro Motion Compact Density Meters CDM ...