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42 Micro Motion
®
Model 2200S Transmitters
Configuring Process Measurement
3. If you do not know the standard density of your gas:
a. Click the
Gas Wizard button.
b. Click
Choose Gas and check the list.
c. If your gas is listed, select it and click
Next.
d. If your gas is not listed, click
Enter Other Gas Property and provide the required
information. You can describe your gas by molecular weight, its specific gravity, or
density. If you use density, you must enter the density value in the configured density units
and you must provide the temperature and pressure at which the density value was
determined. When you are finished, click
Next.
e. Verify the reference temperature and reference pressure. If these are not appropriate for
your application, click
Change Reference Conditions and enter new values for reference
temperature and reference pressure.
f. Click
Next. The calculated standard density value is displayed.
• If the value is correct, click
Finish. The value will be written to transmitter
configuration.
• If the value is not correct, click
Back and modify input values as required.
Note: The Gas Wizard displays density, temperature, and pressure in the configured units. If required,
you can configure the transmitter to use different units.
4.6.1 Volume or GSV flow cutoff
If the volume or GSV flow measurement drops below the configured volume or GSV flow cutoff, the
transmitter will report a value of 0 for volume flow or GSV flow.
Note the following:
• If Volume Flow Type is set to Liquid:
• The volume flow rate is affected by the density cutoff. Accordingly, if the density drops
below its configured cutoff value, the volume flow rate will go to zero even if flow is
present and the volume flow rate is above the volume flow cutoff.
• The volume flow rate is not affected by the mass flow cutoff.
• If Volume Flow Type is set to GSV, the volume flow rate is not affected by either the density
cutoff or the mass flow cutoff.
• The volume or GSV flow rate reported via the mA output may also be limited by the AO
cutoff. See Section 6.2.3 for more information.
Configuration
To configure the volume flow cutoff or GSV flow cutoff:
• Using the Communicator, select
Detailed Setup > Config Fld Dev Var > Flow.
• Using ProLink II, click
ProLink > Configuration > Flow.
Note: You cannot configure the volume flow cutoff or GSV flow cutoff with the display.