Figure 7-17: Threshold Settings in RRM
Automatic threshold settings are enabled by default. In the Advanced Configuration
window the Interface, Reference, Probe End and Full Tank thresholds can also be set
manually.
Adjust thresholds using a handheld communicator
To adjust the amplitude thresholds:
Prerequisites
Note
Before changing the amplitude thresholds, check that the Upper Product Dielectric
Constant parameter is set as accurately as possible. The Upper Product Dielectric Constant
is used for setting the automatically calculated amplitude thresholds.
Procedure
1. HART: Select HART Service Tools → Echo Tuning → Thresholds.
FOUNDATION Fieldbus: Select HART Service Tools → Echo Tuning → Echo Tuning.
The different threshold options appear on the display.
2. Open the desired option. For example, to specify a constant Surface Threshold:
HART: Select Surface → Set Threshold.
FOUNDATION Fieldbus: Select option Surface Threshold → Set Threshold.
See also Analyzing the measurement signal and Adjusting thresholds for more
information on how to use the amplitude thresholds.
3. Select Save and follow the instructions.
Service and troubleshooting Reference Manual
April 2019 00809-0100-4530
208 Rosemount 5300 Level Transmitter
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