Ecotech Serinus 30 - 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

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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-l
imit 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 %
M
aximum 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