Connecting Accessories; The As 10E And As 21Hp Autosamplers; Figure 17 As 10E Autosampler - Endress+Hauser analytikjena multi N/C UVHS Operating Manual

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4.3

Connecting accessories

4.3.1

The AS 10e and AS 21hp autosamplers

AS 10e autosampler
– Ultrapure water 5 hose
– Sample intake canula 6 hose
– Sample purging canula: 10 hose
ü The analyzer has been commissioned.
NOTICE
Risk of damage to the sensitive electronics
¡ Only connect the device and the other components to the power grid when they are
switched off.
¡ Only connect and disconnect electrical connection cables between the system com-
ponents when the system is switched off.
The autosampler is equipped with a rotatable sample tray for 10 sample vessels with a
volume of 50 ml. Optionally, sample values with a volume of 40 ml can be used.
Figure 17AS 10e autosampler
The autosampler can be equipped with two canulas. This allows the autosampler to au-
tomatically purge samples for NPOC analysis.
During NPOC analysis, the sample is acidified outside the analyzer with diluted acid to a
pH value of <2. The autosampler purges volatile organic compounds and the produced
CO from the sample by means of the carrier gas. The analyzer then determines the re-
2
maining organic carbon.
During NPOC analysis, the autosampler works sequentially:
¡ First, the autosampler purges volatile organic compounds and CO
¡ In a second step, the autosampler picks up the prepared sample and transfers it via
the intake hose to the analyzer.
Installation and commissioning
from the sample.
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