Endress+Hauser Oxymax COS61D, Operating Instructions Manual

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Oxymax COS61D Calibration and adjustment
Hauser 23
Altitude
[m (ft)]
K Altitude
[m (ft)]
K Altitude
[m (ft)]
K Altitude
[m (ft)]
K
100 (330) 0.988 650 (2130) 0.927 1150 (3770) 0.874 1650 (5410) 0.825
150 (490) 0.982 700 (2300) 0.922 1200 (3940) 0.869 1700 (5580) 0.820
200 (660) 0.977 750 (2460) 0.916 1250 (4100) 0.864 1750 (5740) 0.815
250 (820) 0.971 800 (2620) 0.911 1300 (4270) 0.859 1800 (5910) 0.810
300 (980) 0.966 850 (2790) 0.905 1350 (4430) 0.854 1850 (6070) 0.805
350 (1150) 0.960 900 (2950) 0.900 1400 (4600) 0.849 1900 (6230) 0.801
400 (1320) 0.954 950 (3120) 0.895 1450 (4760) 0.844 1950 (6400) 0.796
450 (1480) 0.949 1000 (3300) 0.890 1500 (4920) 0.839 2000 (6560) 0.792
500 (1650) 0.943
3. Calculate factor L :
Relative air pressure at calibration
L= -----------------------------------------------
1013 hPa
4. Determine the M factor:
• M = 1.02 (for Air 100% rh calibration method)
• M = 1.00 (for H2O air-saturated calibration method)
5. Calculate calibration value C :
C = S . K . L . M
Example
• Air calibration at 18 °C (64 °F), altitude 500 m (1650 ft) above sea level, current air
pressure 1009 hPa
• S = 9.45 mg/l, K = 0.943, L = 0.996, M=1.00
• Calibration value C = 8.88 mg/l.
Factor K in the table is not required if the measuring device returns the absolute air
pressure L
abs
(air pressure depending on altitude) as the measured value. The formula
for calculation is then: C = S . L
abs
.