Service And Troubleshooting Tools - Emerson Rosemount 5408 Reference Manual

Service and troubleshooting
March 2023
There is no HART communication (lost device communication)
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Related information
Power supply
HART/polling address
Use the TEST terminal
7.4

Service and troubleshooting tools

7.4.1 Using the echo curve
The Rosemount Radar Master Plus software includes functions for viewing and recording
single instances or movies of the echo curve. The echo curve represents the tank, as seen
by the radar transmitter. Each peak corresponds to a strong reflection of the radar signal.
Figure 7-14: Echo Curve
When connected to Rosemount Radar Master Plus, past measurement records and echo
curves including the 10 highest peaks, as well as the 50 last alert events are automatically
transferred from the transmitter's internal memory to the hard drive on your local
computer. Past measurement records are then available the next time you connect to the
transmitter using the level trend timeline.
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1. Verify power supply voltage is adequate at signal terminals.
2. Check load resistance (250 ohms minimum).
3. Check if device is at an alternate HART address.
4. Check current analog output value to verify that device hardware works.
5. Verify the blue plug is attached to the TEST terminal (if applicable). When
unplugged, HART communication to configuration tool may be compromised.
Reference Manual
00809-0100-4408
Reference Manual