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Reference Manual
00809-0100-4860, Rev BC
Section 3: Configuration
January 2013
Configuration
Primary Variable Lower Range Value (PV LRV)
This is the 4 mA set point for the meter, and is typically set to 0 when the PV is a Flow Variable.
3.2.14 PV damping
Damping changes the response time of the flowmeter to smooth variations in output readings
caused by rapid changes in input. Damping is applied to the Analog Output, Primary Variable,
Percent of Range, and Vortex Frequency. This will not affect the Pulse Output, Total, or other
Digital Information.
The default damping value is 2.0 seconds. This can be reset to any value between 0.2 to 255
seconds when PV is a flow variable or 0.4 to 32 seconds when PV is Process Temperature.
Determine the appropriate damping setting based on the necessary response time, signal
stability, and other requirements of the loop dynamics in your system.
Note
If the vortex shedding frequency is slower than the damping value selected, no damping is
applied.
3.2.15 Auto adjust filter
The Auto Adjust Filter is a function that can be used to optimize the range of the flowmeter
based on the density of the fluid. The electronics uses process density to calculate the minimum
measurable flow rate, while retaining at least a 4:1 signal to the trigger level ratio. This function
will also reset all of the filters to optimize the flowmeter performance over the new range. If the
configuration of the device has changed, this method should be executed to ensure the signal
processing parameters are set to their optimum settings. For a stronger signal select a density
value that is lower than the actual flowing density.
Field Comm. 1, 3, 8, 2
Field Comm. 1, 3, 9
Field Comm. 1,3, Scroll to
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