Micro Motion CDM100M, Configuration And Use Manual

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Temperature measurement problems and recommended actions
(continued)
Table 10-3:
Problem Possible causes Recommended actions
Inaccurate tempera-
ture data from exter-
nal device • Wiring problem
• Problem with input configuration
• Problem with external device
• Problem with input configuration
• Verify the wiring between the transmitter
and the external device.
• Verify that the external device is operating
correctly.
• Verify the configuration of the tempera-
ture input.
• Ensure that both devices are using the
same measurement unit.
Related information
Thermal insulation
10.8.1 Thermal insulation
Temperature measurement is a potential source of significant error in density
measurement. Thermal insulation helps to maintain a constant temperature, and can
reduce or eliminate temperature problems.
Thermal insulation is especially important when the line temperature and the ambient
temperature are significantly different, or when there are abrupt changes in either the line
temperature or the ambient temperature.
A thermal insulation jacket should protect both the sensor body and the flanges.
A thermal insulation jacket designed specifically for your meter is available from
Micro Motion. See the product data sheet for your meter.
10.9 API referral problems
Problem Possible causes Recommended actions
No referred density
reading • Line pressure, line temperature, or line
density is outside the range of the config-
ured API table • Check process conditions.
• Ensure that the API referral application is
configured correctly for your process fluid.
See
Section 4.6 .
Troubleshooting
Configuration and Use Manual 151