Emerson Rosemount 2410 - 10 How to Adjust the SIL Hold off Distance

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Safety Manual
00809-0200-5100, Rev GB
Installation and Configuration
February 2017
Installation and Configuration
4.2.10 How to adjust the SIL Hold Off Distance
In case the presented SIL Surface Distance indicates that the product surface is close to the
nozzle, adjust the SIL Hold Off Distance instead of the SIL Amplitude Threshold. It is recommended
that this method is used only if the disturbing echo is located more than 1 meter above the SIL
High Alarm Limit.
1. Note the position of the disturbing echo. In case the gauge has locked on a disturbing
echo, this position will be presented as the SIL Surface Distance. Also note the SIL Used
Hold Off Distance.
2. Set the SIL Hold Off Distance Adjustment parameter so that the position of the disturbing
echo is within the region defined by the SIL Used Hold Off Distance (see Figure 4-7 on
page 20).
3. Click the Apply button.
4. Check the SIL Surface Distance and verify that the 5900 gauge has found the actual
product surface. If not, increase the SIL Hold Off Distance again. If needed, repeat this
procedure until the 5900 has found the actual product surface.
5. Click the Apply button to store the configuration.