KROHNE OPTIMASS Sensors Concentration Measurement EN - Manual (Page 13)

CONCENTRATION MEASUREMENT
3
13
OPTIMASS
www.krohne.com 01/2014 - 4000733002 - AD OPTIMASS Concentration R04
3.4 Emulsions
Emulsions have the two components (products) that do not mix or interact with each other. For
example, oil / water. If one of the products is water, enter this as product B. To produce the
required concentration coefficients, enter the density of product A (and product B if it is not
water) at a number of temperatures points. The minimum number of points required is two and
the maximum is five. For more information regarding generating concentration coefficients,
refer to the Practical considerations chapter.
Converter settings for emulsions
3.5 Solutions
When two liquids mix or dissolve together they are said to be miscible. The two components may
also have a strong chemical interaction. Because the equation does not take into account any
interaction, using the densities of the two products will only give an approximate value.In the
majority of cases a linear equation can be used to calculate a set of coefficients in order to fit the
application data. To do this, a minimum of two and a maximum of five temperature points with
two density / concentration values per temperature point are required. The temperature points
should cover the temperature range of the concentration, over which the maximum level of
accuracy is required.In some cases, complex interaction between the two components means
that a linear equation cannot be used to calculate the coefficients. In such cases, a non-linear
equation can be used by the manufacturer to produce a set of coefficients for the application.
Please contact your local representative for further assistance.
3.6 Generating concentration coefficients
To generate the coefficients, use the Concentration Calculator supplied on the Technical CD. The
data required to generate these coefficients depends on the type of products. Please refer to the
Suspensions, Emulsions and Solutions sections and to the templates in appendix C to choose the
concentration type that best suits your product. The application will give the results of all the
values that need to be programmed into the concentration menus and can be used for: MFC 300,
MFC 400, MFC 050, MFC 051 and MFC 010
No Function Setting Comments
C2.x.1 Conc. Function % Mass or % Volume
C2.x.2 Conc. Offset 0 If the concentration
measurement produces a stable
error, use this menu option to
enter an offset that will correct
the error.
C2.x.3 Conc. Product % of Product A or % of Product B Select required product to be
measured
C2.y.1 CCF01 Linear
C2.y.2 CCF02 Density Product A at 20°C in
g/cm
3
C2.y.3 CCF03 Product A Temperature term
C2.y.4 CCF04 Product A Temperature squared
term
C2.y.5 CCF05 Pure Water / Town Water / Other
C2.y.6 CCF06 Density Product B in g /cm 3 If CCF05 = Other
C2.y.7 CCF07 Product B Temperature term
C2.y.8 CCF08 Product B Temperature squared
term
AD_Concentration_en_140124_4000733002_R04.book Page 13 Tuesday, January 28, 2014 9:28 AM