Hach NA5600 sc Na+ Installation Manual page 8

The sodium analyzer continuously measures very low concentrations of sodium in ultra-pure water.
Refer to Figure 1 and
The sodium analyzer is available with or without an enclosure. The analyzer with an enclosure is for
wall, panel or table mounting. The analyzer without an enclosure is for panel mounting. Refer to
Figure 1.
The sodium analyzer uses a sodium ISE (ion specific electrode) electrode and a reference electrode
to measure the sodium concentration of the water sample. The difference in potential between the
sodium and reference electrode is directly in proportion to the logarithm of sodium concentration as
shown by Nernst law. The analyzer increases the pH of the sample to a constant pH between
10.7 and 11.6 with a conditioning solution before the measurement to prevent interference from
temperature or other ions on the sodium measurement.
The door can be easily removed for better access during installation and maintenance procedures.
The door must be installed and closed during operation. Refer to
Figure 1 Product overview—external view
1 Overflow vessel
2 Status indicator light (refer to
3 Display and keypad
4 SD card slot
5 Analyzer without enclosure (panel mount)
6 Analyzer with enclosure (wall, panel or table mount)
2
Only supplied with analyzers with the auto calibration option.
8 English
Figure 2 for an overview of the analyzer components.
Table 5 on page 10)
Figure 3.
7 Analytics panel
8 Calibration standard bottle
9 Reactivation solution bottle
10 Sodium electrode
11 Reference electrode
2