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Reference Manual
00809-0100-4308, Rev BA
Appendix D: Configuration Parameters
December 2014
Configuration Parameters
Upper Product Dielectric
Constant
Enter the Upper Product Dielectric Constant (DC) as
accurately as possible. This value is used for setting the
automatically calculated amplitude thresholds. In addition
the dielectric constant of the upper product is essential for
calculating the interface level and the upper product
thickness. The default value for the Upper Product Dielectric
Constant is 2.
For level measurements, the Upper Product Dielectric
Constant parameter corresponds to the dielectric constant of
the product in the tank.
If the dielectric constant of the lower product is significantly
smaller than the dielectric constant of water, you may need to
make special adjustments. The dielectric constant of water is
80. See section
“Example 2: Interface Peak not found” on
for further information.
In case the dielectric constant is unknown, then use the
Dielectric Constant Guide embedded in the AMS Wireless
Configurator as help when configuring the DC.
The AMS Wireless Configurator includes a Dielectric Chart
which lists the dielectric constants of a range of products.
AMS Wireless Configurator also includes a tool which allows
you to calculate dielectric constants based on measurements
of the Upper Product Thickness.
1.
From the
Home
Screen, go to
Configure > Manual
Setup > Level Setup > Environment
.
2.
Click
Dielectric Constant Guide
and follow the
on-screen instructions.
Maximum Product Level
Rate
Fastest rate that may occur in the monitored process to
(partially) fill or empty this tank. Will be used to calculate the
maximum level change between updates. Note that product
level rate may be higher during upset conditions.
Note
If the tank is filling or emptying at a high rate, set a faster
Update Rate to make sure there is enough safety margin in
the system for High/Low Alerts.
Run Check Level Response to make sure that configured
Update Rate is sufficient for the application, refer to section
.
Tank Material
Select material of construction of the tank.
Summary of Contents for 3308A Rosemount 3308 Series
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Page 6: ...vi Reference Manual 00809 0100 4308 Rev BA Title Page December 2014 ...
Page 12: ...vi Reference Manual 00809 0100 4308 Rev BA Table of Contents December 2014 Table of Contents ...
Page 14: ...2 Reference Manual 00809 0100 4308 Rev BA Section 1 Introduction December 2014 Introduction ...
Page 52: ...40 Reference Manual 00809 0100 4308 Rev BA Section 3 Installation December 2014 Installation ...
Page 80: ...68 Reference Manual 00809 0100 4308 Rev BA Section 5 Operation December 2014 Operation ...
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