Metrohm 794 Basic Titrino - Manual (Page 16)

2.4. Tutorial
794 Basic Titrino
12
If more than one equivalence point has been found, the others can be viewed with
<ENTER>.
Calculation of the result: formula entry
<DEF>
<ENTER>
<1>
<ENTER>
<SELECT>
<ENTER>
2 x <QUIT>
With this equivalence point a result can be calculated.
• Press the <DEF> key.
• Press <ENTER> to move on to the formula entry.
The display now shows "RS?".
• Press "1", i.e. the first formula.
You now can enter a formula. Note here the top inscrip-
tion on the keys of the keypad and the numbers. The
following symbols can be used:
EP# EP's with 1-digit number, e.g. EP1.
RS# Previously calculated results, e.g. RS1 in the sec-
ond formula.
C## Calculation constant with 2-digit number, e.g. C01.
C00 is reserved for the sample size. For the mean-
ing of the calculation constants see page 53.
Calculate the content of your hydrochloric acid in g/L:
RS1=EP1*C01*C02/C00
End point*conc.(titrant)*molecular weight/sample size
To correct a formula, delete it with <CLEAR>.
• Confirm the formula with <ENTER>.
• You may enter a text for the result output, see page
8.
• Enter the desired number of decimal places for the
result.
• Select the desired unit g/L with <SELECT>, or type
a text as unit, see page 8.
The Titrino prompts for the calculation of the next result.
Quit the formula entry by pressing <QUIT> twice.
In order to be able to calculate the result, enter the calculation constants used in the for-
mula.
def
>formula
RS?
RS1=
RS1=EP1*C01*C02/C00
>formula
RS1 text RS1
>formula
RS1 decimal places 2
>formula
RS1 unit %
RS?