Endress+Hauser Oxymax COS22D, Руководство по эксплуатации

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Oxymax COS22D Function
Hauser
21
5.2.3 Calculation example for the calibration value
As a check, you can calculate the expected calibration value (transmitter display) as shown in the
following example (salinity is 0).
1. Determine:
– The ambient temperature for the sensor (air temperature for "air" calibration method,water
temperature for "air-saturated water" calibration type)
– the altitude above sea level
– the current air pressure (=rel. air pressure to sea level) at the time of calibration. (If
undeterminable, use 1013 hPa (407 inH
2
O) for an approximate calculation.)
2. Define:
– the saturation value
S acc. to the first table
– the factor K acc. to the second table
T
[ ˚ C ( ˚ F)]
S
[mg/l=ppm]
T
[ ˚ C ( ˚ F)]
S
[mg/l=ppm]
T
[ ˚ C ( ˚ F)]
S
[mg/l=ppm]
T
[ ˚ C ( ˚ F)]
S
[mg/l=ppm]
0 (32) 14.64 11 (52) 10.99 21 (70) 8.90 31 (88) 7.42
1 (34) 14.23 12 (54) 10.75 22 (72) 8.73 32 (90) 7.30
2 (36) 13.83 13 (55) 10.51 23 (73) 8.57 33 (91) 7.18
3 (37) 13.45 14 (57) 10.28 24 (75) 8.41 34 (93) 7.06
4 (39) 13.09 15 (59) 10.06 25 (77) 8.25 35 (95) 6.94
5 (41) 12.75 16 (61) 9.85 26 (79) 8.11 36 (97) 6.83
6 (43) 12.42 17 (63) 9.64 27 (81) 7.96 37 (99) 6.72
7 (45) 12.11 18 (64) 9.45 28 (82) 7.82 38 (100) 6.61
8 (46) 11.81 19 (66) 9.26 29 (84) 7.69 39 (102) 6.51
9 (48) 11.53 20 (68) 9.08 30 (86) 7.55 40 (104) 6.41
10 (50) 11.25