Appendix d: do2 calibration tables, Table 1: do2 versus temperature and pressure, Calibration tables – PASCO PS-2169 Water Quality MultiMeasure Sensor User Manual
Page 12: Table 1: do, Versus temperature and pressure, This table lists the absolute do
®
W a te r Q u a l i t y M u l ti M e a s u r e S e n s o r
R e f e r e n c e S o l u t i o n s fo r C o n d u c t i v i t y C a l i b r a t i o n
12
Appendix C: Reference Solutions for
Conductivity Calibration
Appendix D: DO
2
Calibration Tables
Table 1: DO
2
Versus Temperature and Pressure
Note: Atmospheric pressures from 695 to 600 mm Hg begin on page 14.
This table lists the absolute DO
2
concentration of 100% saturated pure water at vari-
ous temperature and pressures. Multiply the pure-water figure by the correction factor
from Table 2 (page 16) to determine the absolute concentration of a 100% saturated
saline water sample.
Reference
Solution
Approximation
Normality of
Solution
Method of Preparation
Temperature
(°C)
Electrical
Conductivity
1
(µS/cm)
A
1
74.2480 g of KCI weighed in air per 1 L of
solution at 20 °C
0
65176
18
97838
25
111342
B
0.1
7.4365 g of KCI weighed in air per 1 L of
solution at 20 °C
0
7138
18
11167
25
12856
C
0.01
0.7440 g of KCI weighed in air per 1 L of
solution at 20 °C
0
773.6
18
1220.5
25
1408.6
D
0.001
Dilute 100 mL of solution C to 1 L at 20 °C
0
77.69
18
127.54
25
148.93
1
Excluding the conductivity of the water used to prepare the solutions. These tabulated conductivity values are in international
units. When using measuring instruments calibrated in absolute units, multiply the tabular values by 0.999505
Temp.
Atmospheric pressure, in millimeters of mercury and (inches of mercury)
°C
795
(31.30)
790
(31.10)
785
(30.91)
780
(30.71)
775
(30.51)
770
(30.31)
765
(30.12)
760
(29.92)
755
(29.72)
750
(29.53)
745
(29.33)
740
(29.13)
735
(28.94)
730
(28.74)
725
(28.54)
720
(28.35)
715
(28.15)
710
(27.95)
705
(27.76)
700
(27.56)
0.0
15.3
15.2
15.1
15.0
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
0.5
15.1
15.0
14.9
14.8
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.2
1.0
14.8
14.7
14.7
14.6
14.5
14.4
14.3
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.2
13.2
13.1
1.5
14.6
14.5
14.5
14.4
14.3
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.2
13.2
13.1
13.0
12.9
2.0
14.4
14.3
14.3
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
2.5
14.2
14.2
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.6
12.5
3.0
14.1
14.0
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.6
12.5
12.5
12.4
3.5
13.9
13.8
13.7
13.6
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.6
12.6
12.5
12.4
12.3
12.2
4.0
13.7
13.6
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.6
12.6
12.5
12.4
12.3
12.2
12.1
12.0
4.5
13.5
13.4
13.3
13.3
13.2
13.1
13.0
12.9
12.8
12.7
12.7
12.6
12.5
12.4
12.3
12.2
12.1
12.1
12.0
11.9