Teledyne LXT-280 - Manual (Page 42)

Calibration Correction LXT-280
Teledyne Analytical Instruments 32
Table 5-1: Oxygen Saturation vs. Temperature
Oxygen Saturation in ppm (mg/l) at an Overall Pressure of a Water Vapor
Saturated Atmosphere at 29.9” Hg (760 mm Hg)
Temp.
°C
Solubility in ppm Temp.
°C
Solubility in ppm
0 14.62 22 8.83
2 13.84 24 8.53
4 13.13 25 8.37
6 12.48 26 8.22
8 11.87 28 7.92
10 11.33 30 7.63
12 10.83 32 7.40
14 10.37 34 7.20
16 9.95 36 7.00
18 9.54 38 6.80
20 9.17 40 6.60
3. Determine the relative humidity if performing the calibration in
air only. If calibrating in an air saturated sample, assume a
relative humidity of 100%.
4. Referring to Table 5-2, Relative Humidity Correction Factors,
find the intersection of the relative humidity and the temperature
axis. Use the temperature closest to the values listed.
Interpolation is not necessary. Record the correction value.
5. Determine the elevation from sea level.
6. Referring to Table 5-3, Elevation Correction Factors, find the
intersection of the nearest thousand feet and hundred feet to the
elevation at which the calibration is being performed. Record the
correction value.