System Configuration - Hach Ldo Sc Model 2 Sensor Benutzerhandbuch

Salinity can be calculated with the relationship in section 2520 B of Standard Methods for the
Examination of Water and Wastewater.
Table 1 Salinity saturation (‰) per conductivity value (mS/cm)
mS/cm ‰
5 3
6 4
7 4
8 5
9 6
10 6
11 7
12 8
13 8
14 9
15 10

5.3 System configuration

Refer to the controller documentation for system configuration, general controller settings and setup
for outputs and communications.
Section 6 Calibration
The sensor is calibrated to specification at the factory. The manufacturer does not recommend
calibration unless periodically required by regulatory agencies. If calibration is required, let the sensor
come to equilibrium with the process before calibration. Do not calibrate the sensor at setup.
Table 2 shows the calibration options.
Option
Air calibration
(or AIR CAL)
Calibration
(or SAMPLE CAL)
Reset calibration
(or RESET DFLT CAL)
2
Standard Methods for the Examiniation of Water and Wastewater, 20th Edition. Editors Lenore
S. Clesceri, Arnold E. Greenberg and Andrew D. Eaton, p. 2-48-2-29 (1998). The relationship
between Chlorinity and Oxygen Solubitity is provided in the same reference in 4500-O:I p. 4-131.
12 English
2
mS/cm ‰
16 10
17 11
18 12
19 13
20 13
21 14
22 15
23 15
24 17
25 17
26 18
Table 2 Calibration options
Description
Recommended calibration method. This calibration modifies the calibration slope.
Calibration by comparison with a hand-held DO meter. This calibration modifies the
calibration offset.
Resets the calibration gain (slope) and offset to the factory default. Default: gain=1.0,
default offset=0.0
mS/cm ‰
27 18
28 19
29 20
30 21
31 22
32 22
33 23
34 24
35 25
36 25
37 26
mS/cm ‰
38 27
39 28
40 29
42 30
44 32
46 33
48 35
50 37
52 38
54 40