Detecting Thin Interface Layers - Emerson 5301HxxxxxxxxxxxxxxZZ Series Reference Manual

Advanced configuration
April 2019
Procedure
1. Select Configure → Manual Setup → Device Setup.
2. Select Analog Output.
3. Select Alarm Level.
4. Select the desired alarm limits option.
5. Select Send and follow the instructions.
D.9

Detecting thin interface layers

The Rosemount 5300 software uses an algorithm to enhance detection of thin interface
layers. The algorithm is active for interface measurements where the upper product
thickness is about 10 in. (25 cm) or less.
The thin layer detection function is enabled by default. In rare cases it might be relevant to
disable thin layer detection, like the following situations:
1. Interface measurements in the upper part of HP/HTHP probes
2. Applications with disturbances from nozzle or other physical objects
Related information
Interface measurements
D.9.1 Enable/disable thin layer detection using Rosemount
Radar Master
The thin layer detection is initially enabled. It can be set to enabled or disabled.
Prerequisites
The thin layer detection is only applicable to:
• Firmware version 2.L3 or later.
• Measurement mode: Level and Interface Level.
• Probe types: Single lead or Coaxial/Large coaxial (standard/HP/C).
Note
When the thin layer detection is disabled, the minimum detectable upper product
thickness is increased, typically 5.1 in. (13 cm).
418
The current alarm limit option is presented.
The thin layer detection functionality is impaired for measurement at the top of the
HP/HTHP probes, approximately the top 60 cm. For interface measurements in this
area the thin layer functionality may not work as desired.
For interface measurements exposed to disturbances, the perfomance of the thin
layer detection functionality might be affected. Tank disturbances can origin from
the nozzle or objects in the tank e.g. spacers. Minor disturbances might decrease
the thin layer detection accuracy. Larger disturbances can cause the thin interface
detection to not work properly.
Reference Manual
00809-0100-4530
Rosemount 5300 Level Transmitter