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Ref. No. [UMCES] CBL 2016-011
ACT VS16-02
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The precision of the PME miniDOT sensor was also characterized for each of the nine
temperatures and salinity trials (Table 3). Precision trials were conducted at the start of each new
tank test when conditions were most stable. Instruments were equilibrated in test tanks at indicated
temperature and salinities for 45 min then the subsequent 31 one-minute measurements were used
to estimate average tank DO (mg/L) and its variation over that interval. The absolute precision,
estimated as the standard deviation (s.d.) around the mean, ranged from 0.005 – 0.013 mg/L across
trials with an overall average of 0.008 mg/L. Relative precision, estimated as the coefficient of
variation (CV% = (s.d./mean)x100), ranged from 0.057 – 0.248 percent across trials with an
overall average of 0.098%.
Table 3.
Characterization of the precision of the PME miniDOT sensor over a range of temperatures and
salinities test conditions.
Trial ID
Temperature
Salinity
Dissolved Oxygen Reading
mg/L mean
mg/L s.d.
CV%
n
L_T15_S00
15.44
0.00
9.16
0.013
0.137
31
L_T15_S10
15.47
8.82
9.16
0.006
0.063
31
L_T15_S35
15.39
34.20
8.15
0.006
0.076
31
L_T04_S00
5.40
0.00
11.88
0.008
0.070
31
L_T04_S10
5.30
8.98
11.59
0.008
0.068
31
L_T04_S35
5.23
34.77
10.13
0.006
0.057
31
L_T30_S00
30.22
0.00
4.95
0.012
0.248
31
L_T30_S10
30.51
9.28
6.99
0.006
0.085
31
L_T30_S35
30.61
34.43
5.92
0.005
0.080
31