Note
No reference peak will be included in the echo curve of a large coaxial probe. An internal
reference point is used for the large coaxial probe.
Product surface peak
This peak indicates the product level and is caused by a reflection from the product
surface.
The signal strength of the reflection depends on the dielectric constant of the product.
Product with a high dielectric constant (for example water) gives better reflection (a
strong signal amplitude) than product with a low dielectric constant (for example oil).
Interface peak
This peak indicates the interface level. The peak is caused by reflection from the interface
between an upper product and a bottom product with a relatively high dielectric constant.
This peak is identified when the measurement mode is set to Product Level and Interface
Level or Interface Level with Submerged Probe.
Probe end peak
It is caused by reflection from the probe end. If the probe is grounded, the peak will be
positive. If the probe end is submerged in a high dielectric media, such as water, it will not
be visible.
7.9.2
The echo curve analyzer
The Echo Curve Analyzer in Rosemount Radar Master shows the measurement signal
amplitude from the top to the bottom of the tank. It includes functions for viewing and
recording the Echo Curve, and advanced functions for configuration of amplitude
thresholds.
Use the echo curve analyzer in Rosemount Radar Master
To plot the measurement signal:
Procedure
1. Start Rosemount Radar Master.
2. Open Device Config/Tools (or Device Config/Setup).
3. Select the Echo Curve icon.
Reference Manual Service and troubleshooting
00809-0100-4530 April 2019
Reference Manual 195
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