Yokogawa DO402 Dissolved Oxygen Analyzer User Manual
Page 74
IM 12J05D02-01E
6-8 Calibration
Table 6-3.
Solubility of oxygen (mg/l) of sea
water & fresh water (based on sea
level barometric pressure of 760 mm
Hg)
Table 6-1. Solubility of oxygen (mg/l) in water as a function of temperature & salinity
Table 6-2. Solubility of oxygen (mg/l) at various
temperatures and elevations (based on sea level
barometric pressure of
760 mm Hg)
Temp Solubility of oxygen in water in equilibrium
Correction to be substracted for each degree of salinity
with air
expressed in grams per kilogram of total salts in water
@101.325kPa[pO
2
]
[∆pO
2
]
°C
mg/l
mg/l
0
14.62
0.0875
1
14.22
0.0843
2
13.83
0.0818
3
13.46
0.0789
4
13.11
0.0760
5
12.77
0.0739
6
12.45
0.0714
7
12.14
0.0693
8
11.84
0.0671
9
11.56
0.0650
10
11.29
0.0632
11
11.03
0.0614
12
10.78
0.0593
13
10.54
0.0582
14
10.31
0.0561
15
10.08
0.0545
16
9.87
0.0532
17
9.66
0.0514
18
9.47
0.0500
19
9.28
0.0489
20
9.09
0.0475
21
8.91
0.0464
22
8.74
0.0453
23
8.58
0.0443
24
8.42
0.0432
25
8.26
0.0421
26
8.11
0.0407
27
7.97
0.0400
28
7.83
0.0389
29
7.69
0.0382
30
7.56
0.0371
Temp
Elevation (metres above sea level)
°C
0
300 600 900 1200 1500 1800
0
14.6 14.1 13.6 13.2 12.7 12.3 11.8
2
13.8 13.3 12.9 12.4 12.0 11.6 11.2
4
13.1 12.7 12.2 11.9 11.4 11.0 10.6
6
12.4 12.0 11.6 11.2 10.8 10.4 10.1
8
11.8 11.4 11.0 10.6 10.3
9.9
9.6
10
11.3 10.9 10.5 10.2 9.8 9.5 9.2
12
10.8 10.4 10.1 9.7 9.4 9.1 8.8
14
10.3
9.9
9.6
9.3
9.0
8.7
8.3
16
9.9
9.5
9.2
8.9
8.6
8.3
8.0
18
9.5
9.2
8.9
8.6
8.3
8.0
7.7
20
9.1 8.8 8.5 8.2 7.9 7.7 7.4
22
8.7
8.4
8.1
7.8
7.6
7.3
7.1
24
8.4
8.1
7.8
7.6
7.3
7.1
6.8
26
8.1
7.8
7.6
7.3
7.0
6.8
6.6
28
7.8
7.5
7.3
7.0
6.8
6.6
6.3
30
7.5
7.2
7.0
6.8
6.5
6.3
6.1
32
7.3
7.1
6.8
6.6
6.4
6.1
5.9
34
7.1
6.9
6.6
6.4
6.2
6.0
5.8
36
6.8
6.6
6.3
6.1
5.9
5.7
5.5
38
6.6
6.4
6.2
5.9
5.7
5.6
5.4
40
6.4
6.2
6.0
5.8
5.6
5.4
5.2
Temp Solubility
Seawater
Fresh water
°C
mg/l
mg/l
0
11.97
14.62
2
11.36
13.84
4
10.82
13.13
6
10.29
12.48
8
9.84
11.87
10
9.43
11.33
12
9.05
10.83
14
8.69
10.37
16
8.37
9.95
18
8.06
9.54
20
7.77
9.17
22
1.48
8.83
24
7.21
8.53
26
6.93
8.22
28
6.67
7.92
30
6.41
7.63