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Transducer Block
TRANSDUCER BLOCK The transducer block contains the actual flow measurement data. The
data include information about sensor type, engineering units, digital
filter settings, damping, and diagnostics.
Process Variables (PV)
PV Value PV Value is the actual measured flow rate in the line. On the bench,
the value should be zero. Check the units of the value to make sure they
are configured correctly. The unit configuration is contained in the AI
block.
Sensor Serial Number This parameter can be entered by the user to be the serial number of
the unit or any other number they would like to insert.
Sensor Range The Sensor Range is the entire flow range of the vortex meter. This
includes the range that is out of the accuracy specification. If the range
is between the PV Range and the Sensor Range, the status of the value
is UNCERTAIN. If the Sensor Range is exceeded, the status goes to
BAD and OUT OF SERVICE.
PV Range The PV Range is the range of the Model 8800C that can be met with
stated accuracy.
Basic Setup
Pipe I.D. The Pipe I.D. (inside diameter) of the pipe adjacent to the flowmeter
(mating pipe) can cause entrance effects that may alter flowmeter
readings. You must specify the exact inside diameter of the pipe to
correct for these effects. Enter the appropriate value for this variable.
Service Type The flowmeter can be used for liquid or gas/steam applications, but it
must be configured specifically for the application. If the flowmeter is
not configured for the proper service type, readings will be inaccurate.
Select the proper service type for your application:
• Liquid
•Gas/Steam
Process Temperature Process Temperature and Temperature Units are needed for the
electronics to compensate for thermal expansion of the flowmeter as the
process temperature differs from the reference temperature. Process
temperature is the temperature of the liquid or gas/steam in the line
during flowmeter operation.
Process Density Process Density and Density Units are required only if you have
designated mass units for your flow rate units. It is required for the
conversion from volumetric units to mass units. If you select volumetric
units, process density is not required. For example, if you have set flow
units to kg/sec rather than gal/sec, a density is required to convert the
measured volumetric flow into the desired mass flow.
Damping Damping changes the response time of the flowmeter to smooth
variations in output readings caused by rapid changes in input. The
default damping is 2.0 seconds. This can be reset to any value between
0.2 and 255 seconds.
Flow Units
Density Ratio Density Ratio is used to convert the actual volumetric flow to
standard/normal volumetric flow rates based on the following
equations: