KROHNE VFM 3100 EN - Manual (Page 25)

As mentioned previously, the units of the default configuration data-
base, i.e., US or Metric, are established by the units of the Reference
K-Factor.
These defaults are not recommended for general operation and
should be used only when no other information is known about the
process other than the fluid type. Be sure to read the explanation of
each parameter in chapter 9.Configuration Database, prior to chan-
ging the configuration.
2.4.3. Process Fluid Parameters
NOTE: The VFM 3100 uses the above three parameters to correct
internally for the effects of upstream piping and disturbances on the
Flowing K-Factor. Other known bias corrections can be entered
under Custom K-Factor Bias.
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Fluid Type Selecting the fluid type establishes an appropriate default data-
base which can be modified to fit the application.
Process Temperature For accurate flow measurement, the actual value in the selected
units must be entered.
Process Density For optimal performance and accurate mass flow measurement,
the actual value in the selected units must be entered.
Base Density For accurate standard volume flow measurement, the proper
value must be entered in the same units as Process Density.
Process Viscosity For accurate flow measurement at low flow, the actual value in
the selected units must be entered. It is essential that the pro-
cess viscosity be entered if the Low Flow Correction option is On.
Mating Pipe Select upstream mating pipe schedule.
Piping Configuration Select upstream piping configuration.
Upstream Distance Enter distance to first upstream flow disturbance in pipe
diameters.
Custom K-factor Bias To compensate for additional known biases in the flow
measurement system, enter the value, with sign, in percent.
Upper Range Value Enter desired maximum flowrate.
2.4.4. Application Parameters
2.4.5 Output Options
Damping Value Enter desired time in seconds.
Pulse Output Select desired output.
AO/PO Alarm Type Select desired fail condition. Applies only to 4 to 20 mA and Pulse
outputs.