Maintenance and care
multi EA 5100
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The sulfuric acid absorbs the water that is produced during the combustion process. If
the acid content falls below 85 % the sulfuric acid can no longer sufficiently dry the reac-
tion gas. Chlorine values that are too low are then measured.
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Figure 71Connection of the heated gas transfer lines to the sulfuric acid container
1 Safety attachment
2 Sulfuric acid container
3 Hose for measuring gas infeed
4 Connector
5 Banjo bolt
6 Heated gas transfer line
7 Measuring gas transfer to the mea-
suring cell with PTFE connector
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Replace the sulfuric acid daily. High sample throughput may require more frequent
replacement.
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Exit the multiWin software and switch off the analysis system. Switch of the detec-
tion module via the switch on the rear of the device.
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Allow the heated gas transfer line to cool or wear heat-proof gloves when replacing
the sulfuric acid.
CAUTION! Risk of burns at the ends of the heated gas transfer line! The ends can
achieve temperatures of up to 100 °C during operation.
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Remove the banjo bolt from the connector, separating the heated gas transfer line
from the sulfuric acid container.
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Disconnect the PTFE connection and remove hose 20 from the safety attachment.
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Carefully pull the sulfuric acid container with its remaining components out of the
holding clamps toward the top and remove it from the module.
A large beaker is suitable for safe transport and storage (e.g., 500 ml).
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For the "high sensitive" measuring cell: Remove the gas inlet tube from the detection
module with PTFE screw joint and hose 20.
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Remove the safety attachment from the sulfuric acid container.
NOTICE! The bases of the PTFE screw joints remain on the safety attachment, the
hose and the gas inlet tube.
