Hold off distance/upper null zone (UNZ)
The Hold Off Distance/UNZ is equal to zero in the default configuration. This parameter
should only be changed if there are measurement problems in the upper part of the tank.
Such problems may occur if there are disturbing objects, such as a narrow nozzle with
rough walls, close to the probe. By adjusting the Hold Off Distance/UNZ, the measuring
range is reduced. See Changing the hold off distance/upper null zone for further
information.
C.2.3 Tank environment
Measurement mode
Normally, the measurement mode does not need to be changed. The transmitter is pre-
configured according to the specified model:
Table C-2: List of Measurement Modes for Different Rosemount 5300 Models
Model Measurement mode
Rosemount 5301 • Liquid product level
(1)
• Interface level with submerged probe
Rosemount 5302 • Liquid product level
• Product level and interface level
(1)
• Interface level with submerged probe
• Solid product level
Rosemount 5303 • Solid product level
(1)
(1) Default setting.
The measurement mode Interface level with submerged probe is used for applications
where the probe is fully submerged in liquid. In this mode, the transmitter ignores the
upper product level. See Interface Level with Submerged Probe for more information.
Note
Only use Interface level with submerged probe for applications where the interface is
measured with a fully submerged probe.
Rapid level changes
Optimize the transmitter for measurement conditions where the level changes quickly
due to filling and emptying of the tank. As a default standard, a Rosemount 5300 Level
Transmitter is able to track level changes of up to 1.5 in./s (40 mm/s). When the Rapid
Level Changes check-box is marked, the transmitter can track level changes of up to 8 in./s
(200 mm/s).
The Rapid Level Changes check-box should not be used in normal conditions when the
product surface moves slowly.
Configuration parameters Reference Manual
April 2019 00809-0100-4530
388 Rosemount 5300 Level Transmitter
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