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Report on the performance testing of the Serinus 30 ambient air quality
monitoring system manufactured by Ecotech Pty Ltd measuring CO, Report
no.: 936/21221977/D_EN
EP_Ecotech_Serinus30_en.docx
Figure 12:
Concentration variation for the averaging test (t
CO
= t
zero
= 45 s)
7.3
Testing
The averaging test was performed in accordance with the requirements on testing as stipu-
lated in DIN EN 14626. For the purpose of the test, a stepwise varied concentration of CO
between zero and a concentration
c
t
(8.6 µmol/mol). First, the average was calculated at a
constant concentration of test gas. Then, an alternating change between zero and test gas
every 45 s was established using a three-way valve. For the period of alternating test gas
application, the average was calculated as well.
7.4
Evaluation
The following averages were obtained during testing:
This results in the following averaging effects:
System 1: -0.08 %
System 2: -1.55 %
7.5
Assessment
This is in complete compliance with the performance criteria stipulated in Standard DIN EN
14626.
Does this comply with the performance criterion? yes
7.6
Detailed presentation of test results
Table 25 provides the individual results for the averaging test.
Requirement
≤ 7%
-0.08
-1.55
Averaging effect E
av
[%]
Device 1
Device 2
Key
Y concentration (µmol/mol)
X time
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