Density correction If the calibration has been made with water and the product changes at a later date, the
calibration values can be corrected by entering a density factor.
new density
density factor = current factor • –––––––––––
old density
Determining the density
factor
Example: A tank is filled with water and calibrated. The density of the water (old density)
is 1 g/cm
3
. Later the tank will be used as a storage tank and be filled with the actual
medium to be measured. The new density is 1.2 g/cm
3
. "Density Factory" still contains
the factory setting "1", i.e. the current factor is "1".
1.2 g / cm
3
density factor = 1 • ––––––––––
1 g / cm
3
# Parameter Entry Significance
1 Density Factor e.g. 1.2 Density correction
2 Measured
Value
e.g.
62.5 %
Corrected level
Result
• The measured value in parameter "Mea-
sured Value" is divided by the density
factor and is thus correct for the new
product.
Note!
The density factor directly affects the level measurement. If the product density changes,
make sure that the density factor is updated before an existing linearization curve is used.
BA211Y48
Measurement
with product
ρ = 1.2
Calibration
with water
ρ = 1.0
Note!
6 Level Measurement Cerabar S FF
40 Endress+Hauser
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