Endress+Hauser Analytik Jena multi EA 4000, Operating Manual

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Measuring methods multi EA 4000
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4.7 Data analysis in the Cl mode
4.7.1 End point routine
After filling the measuring cell or after each change of the electrolyte solution an end
point routine must be performed to define the operating point of the system. The indi-
cation value determined represents both the starting point and the end point of titra-
tion. The end point routine is started via the multiWin software.
4.7.2 Measurement with split / split factor
In the operating mode with split the measuring gas from the combustion chamber is
divided into a defined ratio. Only some of the reaction gas reaches the measuring cell
for analysis, allowing also for high concentrations to be determined. For Cl content in
the lower concentration range no gas splitting is used. All of the measuring gas passes
the drying unit and the measuring cell.
For working with gas splitting shares of 10 % and 20 % of the measuring gas can be
selected. The current split factor of a method can be entered/viewed in the method
window on the tab C
ALIBRATION
as D
AILY FACTOR
(menu item M
ETHOD

M
ETHOD
– E
DIT
).
When creating a new split method the split factor must first be transferred by manual
input from an existing method with the same split ratio.
The current split factor is checked and, where necessary, corrected using standards.
4.7.3 Analysis
The coulometric Cl determination is an absolute analysis method. Bi calibration takes
place. The result is stated in the analysis report in the absolute mass [µg] and as con-
centration [µg/g] or [mg/g].