Process - Honeywell SLG 700 User Manual

7.7.4

Process

The five parameters in this group allow the products involved in the process of operating
the tank to be identified, as shown below in Figure
is the number of products involved, and secondly the dielectric constant of each product.
The dielectric constant of a medium affects radar measurements in two ways:
1. Pulses travelling through a medium are slowed by an amount related to the
dielectric constant.
2. The relative amount of the original pulse that is reflected from the boundary
between two mediums is related to the dielectric constants of the media on each
side of the interface. For the reflected pulse, the reduction in the amplitude with
respect to the original pulse amplitude can be calculated from the dielectric
constants of the media on each side of the interface.
Common dielectric constants can be found from the pull-down lists. If a material is
not present on the list or if the dielectric constant is not correct, the correct value can
be input in the box.
Revision 5
Figure 6: Basic Configuration – Process
SLG 700 Series HART Option User's Manual
6. The first consideration to be made
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