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Reference Manual
00809-1600-4530, Rev AA
Section 4: Verification Procedure with Fluid
March 2015
Verification Procedure with Fluid
Section 4 Verification Procedure with
Fluid
Verification procedure with active level measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . page 23
Common problems and recommended actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 25
Transmitter diagnostics review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
Monitor level while emptying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 27
Echo curve verification with empty tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
Monitor level while filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
Archive files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . page 29
4.1 Verification procedure with active level
measurement
At normal operating conditions, compare the transmitter level, or interface reading, with an
independent measurement. Unfortunately, it often happens that two independent
measurements do not match up perfectly, but check the sanity and the acceptable deviation.
Verify the correctness of level reading
The independent measurement can be done using a number of different complementary
devices, ranging from sight-glasses and hand-dipping to redundant differential pressure and
displacer transmitters.
Figure 4-1. The Verification of Measurement Data Using a Sight-glass