Mettler Toledo RA-510M Bedienungsanleitung Seite 20

Methods
If you confirm Conc with ENTER, the following submenu appears:
-CALCU. PARA.-
Dimension
Conc. Function : A+Bx
Parameters Set : Auto Manu
Data Replace
Shown only if "Manu" has been selected:
nD is the term used for the calculation of the
curve (see page 20, "Replacing data").
Units (Dimension)
-CALCU. PARA.-
Dimension: %
%
g/l mEq/l
Calculation functions
-CALCU. PARA.-
Conc. Function: A+Bx
A+Bx
A+Bx+Cxx
Interpolation
Select Interpolation if the available equations do not describe the curve. In concentration
determinations, the measured value is then interpolated through the two nearest points of
the curve. Selection of "Interpolation" clears the line "Parameters Set" in the previous mask.
Rule of thumb:
• If only a few (<20) data pairs are stored for the range being measured, select the function of
3rd degree.
• If numerous (>20) data pairs are stored for the range being measured, select "Interpolati-
on".
18
[Method 1]
: %
: x←nD
[Method 1]
ppm mg/g mg/l
N mol/l g/cm
[Method 1]
1/(A+Bx)
A+Bx+Cxx+Dxxx
Shows the selected unit.
– To switch the unit, press the -/Disp. key (see
"Units").
Shows the selected calculation function.
– To switch the function, press the -/Disp. key
(see "Calculation functions").
Shows whether the coefficients of the calculation
function are entered directly (Manu) or calcula-
ted with data pairs to be entered (Auto), see
pages 19 and 20: "Data pairs" or "Replacing
data".
– Select the desired unit or no unit with
the -/Disp. key and confirm with ENTER.
The unit should be the same as that of
the solution used: The instrument does
not convert units!
3
– Select the desired function with the
-/Disp. key.
You can not select the function for the
calculation of the concentration of your
sample until you know the corresponding
curve (see page 20: "Curve").
RA-510M
METTLER TOLEDO