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October 2020
5.3
LED for signal output
Figure 5-3: LED Visible On PCB
A. LED
5.4
Test button for diagnostics
Versions of the Rosemount 2521 with NAMUR electronics can be tested for
vibration anomalies and electronic malfunctions while installed in a silo or
other storage vessel. A test button is on the electronic PCB (see
Figure 5-4: Location of Test Button
A. Test button
B. LED for diagnostics
When the fork is not covered with solids material, pressing the test button
stops the vibration and the signal output switches to indicate a covered fork
sensor state.
Quick Start Guide
A
A
B
Quick Start Guide
Figure
5-4).
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