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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
Table 35:
Expanded uncertainty from the results of the laboratory test for system 2
Table 36:
Expanded uncertainty from the results of the laboratory and field tests for system 2
Measuring device:
Ecotech Serinus 30
Serial-No.:
13-0093 (Device 2)
Measured component:
CO
8h-limit value:
8.62
µmol/mol
No.
Performance characteristic
Result
Square of partial uncertainty
1
Repeatability standard deviation at zero
≤
0.3 µmol/mol
0.020
u
r,z
0.00
0.0000
2
Repeatability standard deviation at 8h-limit value
≤
0.4 µmol/mol
0.000
u
r
0.00
0.0000
3
"lack of fit" at 8h-limit value
≤
4.0% of measured value
0.930
u
l
0.05
0.0021
4
Sensitivity coefficient of sample gas pressure at 8h-limit value
≤
0.7 µmol/mol/kPa
0.030
u
gp
0.07
0.0049
5
Sensitivity coefficient of sample gas temperature at 8h-limit value
≤
0.3 µmol/mol/K
0.000
u
gt
0.00
0.0000
6
Sensitivity coefficient of surrounding temperature at 8h-limit value
≤
0.3 µmol/mol/K
0.046
u
st
0.10
0.0109
7
Sensitivity coefficient of electrical voltage at 8h-limit value
≤
0.3 µmol/mol/V
0.001
u
V
0.00
0.0000
≤
1.0 µmol/mol (Zero)
-0.110
≤
1.0 µmol/mol (Span)
0.090
≤
0.5 µmol/mol (Zero)
0.050
u
int,pos
≤
0.5 µmol/mol (Span)
0.050
≤
0.5 µmol/mol (Zero)
0.080
≤
0.5 µmol/mol (Span)
0.050
or
≤
0.5 µmol/mol (Zero)
0.000
≤
0.5 µmol/mol (Span)
0.000
u
int,neg
9
Averaging effect
≤
7.0% of measured value
-1.550
u
av
-0.08
0.0060
18
Difference sample/calibration port
≤
1.0%
-0.170
u
∆
sc
-0.01
0.0002
21
Uncertainty of test gas
≤
3.0%
2.000
u
cg
0.09
0.0074
Combined standard uncertainty
u
c
0.1992
µmol/mol
Expanded uncertainty
U
0.3983
µmol/mol
Relative expanded uncertainty
W
4.62
%
Maximum allowed expanded uncertainty
W
req
15
%
0.06
0.0035
8c
Interferent NO with 1 µmol/mol
8d
Interferent N
2
O with 50 nmol/mol
Interferent H
2
0 with 21 mmol/mol
u
H2O
-0.07
0.0046
8b
Interferent CO
2
with 500 µmol/mol
Performance criterion
Partial uncertainty
8a
Measuring device:
Ecotech Serinus 30
Serial-No.:
13-0093 (Device 2)
Measured component:
CO
8h-limit value:
8.62
µmol/mol
No.
Performance characteristic
Result
Square of partial uncertainty
1
Repeatability standard deviation at zero
≤
0.3 µmol/mol
0.020
u
r,z
0.00
0.0000
2
Repeatability standard deviation at 8h-limit value
≤
0.4 µmol/mol
0.000
u
r
not considered, as
ur = 0 < ur,f
-
3
"lack of fit" at 8h-limit value
≤
4.0% of measured value
0.930
u
l
0.05
0.0021
4
Sensitivity coefficient of sample gas pressure at 8h-limit value
≤
0.7 µmol/mol/kPa
0.030
u
gp
0.07
0.0049
5
Sensitivity coefficient of sample gas temperature at 8h-limit value
≤
0.3 µmol/mol/K
0.000
u
gt
0.00
0.0000
6
Sensitivity coefficient of surrounding temperature at 8h-limit value
≤
0.3 µmol/mol/K
0.046
u
st
0.10
0.0109
7
Sensitivity coefficient of electrical voltage at 8h-limit value
≤
0.3 µmol/mol/V
0.001
u
V
0.00
0.0000
≤
1.0 µmol/mol (Zero)
0.090
≤
1.0 µmol/mol (Span)
-0.110
≤
0.5 µmol/mol (Zero)
0.050
u
int,pos
≤
0.5 µmol/mol (Span)
0.050
≤
0.5 µmol/mol (Zero)
0.080
≤
0.5 µmol/mol (Span)
0.050
or
≤
0.5 µmol/mol (Zero)
0.000
≤
0.5 µmol/mol (Span)
0.000
u
int,neg
9
Averaging effect
≤
7.0% of measured value
-1.550
u
av
-0.08
0.0060
10
Reproducibility standard deviation under field conditions
≤
5.0% of average over 3 months
3.450
u
r,f
0.30
0.0884
11
Long term drift at zero level
≤
0.5 µmol/mol
-0.470
u
d,l,z
-0.27
0.0736
12
Long term drift at span level
≤
5.0% of max. of certification range
-0.900
u
d,l,8h
-0.04
0.0020
18
Difference sample/calibration port
≤
1.0%
-0.170
u
∆
sc
-0.01
0.0002
21
Uncertainty of test gas
≤
3.0%
2.000
u
cg
0.09
0.0074
Combined standard uncertainty
u
c
0.4514
µmol/mol
Expanded uncertainty
U
0.9028
µmol/mol
Relative expanded uncertainty
W
10.47
%
Maximum allowed expanded uncertainty
W
req
15
%
0.06
0.0035
8c
Interferent NO with 1 µmol/mol
8d
Interferent N
2
O with 50 nmol/mol
Interferent H
2
0 with 21 mmol/mol
u
H2O
-0.07
0.0046
8b
Interferent CO
2
with 500 µmol/mol
Performance criterion
Partial uncertainty
8a
Summary of Contents for Serinus 30
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