Verify Mass Flow Measurement; Verify The Zero - Emerson Micro Motion 4200 Configuration And Use Manual

Configuration and Use Manual
MMI-20048166
If your sensor does not show an FD value, contact customer service.
If your sensor tag does not show a DT or TC value, enter the last 4 characters of the density calibration factor.
In the sample tag shown above, the value is shown as 4.44.

2.9 Verify mass flow measurement

Check to see that the mass flow rate reported by the transmitter is accurate. You can use any available
method.
Procedure
• Read the value for Mass Flow Rate on the transmitter display, which is the default initial display.
• Connect to the transmitter with ProLink III and read the value for Mass Flow Rate in the Process Variables
panel.
• Connect to the transmitter with the Field Communicator and read the value for Mass Flow Rate.
Online > Overview > Mass Flow Rate
Postrequisites
If the reported mass flow rate is not accurate:
• Check the characterization parameters.
• Review the troubleshooting suggestions for flow measurement issues.

2.10 Verify the zero

Display Menu > Service Tools > Verification & Calibration > Meter Zero > Zero Verification
ProLink III Device Tools > Calibration > Smart Zero Verification and Calibration > Verify Zero
Field Communicator Service Tools > Maintenance > Calibration > Zero Calibration > Perform Zero Verify
Verifying the zero helps you determine if the stored zero value is appropriate to your installation, or if a field
zero can improve measurement accuracy.
Important
In most cases, the factory zero is more accurate than the field zero. Do not zero the meter unless one of the
following is true:
• The zero is required by site procedures.
• The stored zero value fails the zero verification procedure.
Prerequisites
Important
Do not verify the zero or zero the meter if a high-severity alert is active. Correct the problem, then verify the
zero or zero the meter. You may verify the zero or zero the meter if a low-severity alert is active.
Procedure
1. Prepare the meter:
Configuration and Use Manual
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April 2019
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