Emerson Micro Motion 3711 Configuration And Use Manual page 55

Configuring the Core Interface
4. The zero procedure is performed from the Mass Flow Calibration panel. On this panel:
a. Adjust the
b. Click
5. Close the shutoff valve downstream from the sensor.
6. Ensure that the sensor is completely filled with fluid.
7. Ensure that the process flow has completely stopped.
If fluid is flowing through the sensor, the sensor zero calibration may be
inaccurate, resulting in inaccurate process measurement.
To improve the sensor zero calibration and measurement accuracy, ensure that
process flow through the sensor has completely stopped.
8. On the Mass Flow Calibration panel:
a. Click
b. Wait until the process is completed. Note:
• The zero will typically take longer than the configured zero time.
• ROCLINK 800 automatically switches to Auto Scan mode so that the messages will
be updated automatically. This affects only the zero procedure. When you close the
window, Auto Scan will return to its previous state (enabled or disabled).
• If you need to cancel the zero process, click
the pre-existing zero values.
9. The results of the zero are displayed on the Calibration panel.
• If the zero was successful, a "Zero Calibration Successful" message is displayed, and the
Live Zero
• If the zero was unsuccessful, a message describing the cause of the failure is displayed.
Correct the condition, then repeat the zero procedure.
Configuration and Use Manual
parameter if required.
Zero Time
.
Begin Meter Zero
CAUTION
. A "Zero Calibration in Progress" message is displayed.
Perform Zero
and
Standard Deviation
. The Model 3711 will use
Cancel Zero
fields are updated with the new values.
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