38
Safety Manual
00809-0200-5100, Rev GB
Installation and Configuration
February 2017
Installation and Configuration
6. Once the 5900 has detected the product surface, you may need to make minor
adjustments of the SIL Calibration Distance in order to accurately match the SIL Surface
Distance (measured by the 5900) with the actual distance to the product surface.
A positive SIL Calibration Distance will decrease the SIL Surface Distance.
A negative SIL Calibration Distance increases the SIL Surface Distance.
7. In case the Rosemount Tank Gauging Safety System is configured for a 5900 with
LPG/LNG antenna, or a Reference Reflector for proof testing, you have to adjust the SIL
Ref. Refl./LPG Pin Distance and the SIL Ref. Refl./LPG Pin Amplitude before proceeding with
Step 3 “Final adjustment of amplitude thresholds” on page 39.
a. Reset the SIL Ref. Refl./LPG Pin Distance and the SIL Ref. Refl./LPG Pin Amplitude to zero.
b. Now the 5900 will detect the verification pin and present it as the product surface or as
a Margin Echo.
c. Note the SIL Surface Distance (or the SIL Margin Echo Distance) and type it into the
SIL Ref. Refl./LPG Pin Distance field.
d. Set the SIL Ref. Refl./LPG Pin Amplitude = 3 x SIL Surface Amplitude
(or 3 x SIL Margin Echo Amplitude).
e. Verify that the 5900 gauge has found the actual product surface.
f. Proceed with Step 3 Final adjustment of amplitude thresholds.
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