Function
16
Hauser
Make sure you comply with the instructions for calibration in the Operating Instructions of the
transmitter.
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
Altitude
[m (ft)]
K
Altitude
[m / ft]
K
Altitude
[m / ft]
K
Altitude
[m / ft]
K
0
1.000
550 (1800)
0.938
1050 (3450)
0.885
1550 (5090)
0.834
50 (160)
0.994
600 (1980)
0.932
1100 (3610)
0.879
1600 (5250)
0.830
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
