Best Practices; Temperature Limits - Emerson Micro Motion Elite Coriolis Micro Motion Elite Coriolis CMF025 Installation Manual

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Best practices

The following information can help you get the most from your sensor.
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Temperature limits

Sensors can be used in the process and ambient temperature ranges shown in the
temperature limit graphs. For the purposes of selecting electronics options, temperature
limit graphs should be used only as a general guide. If your process conditions are close to
the gray area, consult with your Micro Motion representative.
Note
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Installation Manual
There are no pipe run requirements for Micro Motion sensors. Straight runs of pipe
upstream or downstream are unnecessary.
If the sensor is installed in a vertical pipeline, liquids and slurries should flow upward
through the sensor. Gases should flow downward.
Keep the sensor tubes full of process fluid.
For halting flow through the sensor with a single valve, install the valve downstream
from the sensor.
Minimize bending and torsional stress on the meter. Do not use the meter to align
misaligned piping.
The sensor does not require external supports. The flanges will support the sensor in
any orientation. (Some sensor models installed in very small, flexible pipeline have
optional installation instructions that allow for external supports.)
In all cases, the electronics cannot be operated where the ambient temperature is
below –40 °F (–40 °C) or above +140 °F (+60 °C). If a sensor is to be used where the ambient
temperature is outside of the range permissible for the electronics, the electronics must be
remotely located where the ambient temperature is within the permissible range, as
indicated by the shaded areas of the temperature limit graphs.
Temperature limits may be further restricted by hazardous area approvals. Refer to the
hazardous area approvals documentation shipped with the sensor or available at
www.emerson.com.
The extended-mount electronics option allows the sensor case to be insulated without
covering the transmitter, core processor, or junction box, but does not affect temperature
ratings. When insulating the sensor case at elevated process temperatures (above 140 °F),
please ensure electronics are not enclosed in insulation as this may lead to electronics failure.
For the CMFS007 sensor, the difference between the process fluid temperature and the
average temperature of the case must be less than 210°F (99°C)
Planning
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