Preventive Maintenance - Emerson Rosemount 5300 Manual Supplement

April 2019
7

Preventive maintenance

7.1 Review the reference reflector echo properties
The reference reflector echo may be affected by the environment in the
vessel over time. If there is buildup on the probe, this may affect the
reference reflector echo. You can review the reference reflector echo
properties to make sure they are not deviating from the time of calibration.
Procedure
1. In Rosemount Radar Master, select Setup → Advanced → Level
Supervision.
2. In the Reflector Measurement Details section, review echo
properties.
Variable
Reflector Echo Distance
Reflector Echo Amplitude
Calibrated Reflector Echo Distance
Calibrated Reflector Echo Amplitude
Difference Calibrated/Actual
Distance
Note
The product surface level should be at least 500 mm below the
reference reflector when reviewing the echo information.
3. Verify that Reflector Echo Amplitude is within applicable range
depending on application:
Device mounting type
3-in. to 6-in. pipe/chamber (inner
diameter)
8-in. pipe/chamber or bigger (inner
diameter) or Open tank (tank
without pipe)
Manual Supplement
Manual Supplement
Description
Distance to reference reflector echo.
Amplitude of reference reflector
echo.
Distance to reference reflector echo
at time of calibration.
Amplitude of reference reflector
echo at time of calibration.
Difference between the calibrated
and actual distance to the reference
reflector.
Reflector Echo Amplitude
Between -700 mV and -2200 mV.
Between -700 mV and -1800 mV
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