Reference Manual
300520EN, Rev AA
November 2009
4-13
Rosemount 5900 Series
Section 4. Configuration
Make sure that the Threshold value is 500 mV.
The amplitude of the echo from the reference pin must be above the threshold
value in order to appear in the
LPGVerify
window (see
“Verify the gauge
measurement.” on page 4-14
). In case the reference pin does not show up, it
is possible to use a smaller threshold value. Check that the product level is
not above the reference pin.
NOTE!
When the product surface is close to a reference pin, the radar echoes from
the reference pin and the product surface interfere. This may reduce the
accuracy of the measured distance to the reference pin. It is recommended
that verification is not performed if the distance between a reference pin and
the product surface is less than 900 mm.
RTG REFERENCE PIN
RTG REFERENCE POINT
Distance from RTG reference
point to reference pin
MINIMUM CLEARANCE 900 MM
REFERENCE PIN
Preliminary
Summary of Contents for Rosemount 5900
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