multi X 2500
Function and layout of the multi X 2500
33
3.5.3
Measuring cell "high concentration"
The measuring cell "high concentration" is offered as an option. It has the same
function as the measuring cell "sensitive" but provides an elevated electrolyte volume.
It can be used for chlorine contents between 10 and 1000 µg and is recommended in
particular when determining TX in highly contaminated waste and polymer samples
with high PVC content.
Fig. 24 Measuring cell "high concentration"
1 Knurled head screws
2 Cover
3 Opening for electrode (labeled)
4 Opening for olive-tip to connect aspiration hose
or direct injection
5 Electrode space with silver anode
6 Magnetic stirring rod
7 Electrical connection of the measuring cell
Similar to the measuring cell "sensitive", this cell also uses a maintenance-free
combined electrode.
3.5.4
Measuring cell "high sensitive"
The optional measuring cell "high sensitive" is used for very low chlorine contents
(between 0.01 and 10 µg Cl) in combination with the multi-purpose combustion tube.
It is particularly recommended for EOX determinations. The measuring cell "high
sensitive" cannot be used in combination with the open combustion tube (AOX and
POX vertical).
The measuring cell is composed of the base element with magnetic stirring rod and lid.
The positions of the required components are marked inside the lid of the measuring
cell. The central one of the drilled holes is intended for an adapter which is connected
to the extraction hose for the acetic acid vapors. The small unmarked opening is used
for the direct injection in the cell. It is sealed with a plug when the gas from the
combustion furnace is introduced.
Layout
