Softener Monitoring; Steam Power Measurements - Honeywell 9782 Series Operator's Manual

Softener Monitoring

Softener monitoring by conductivity ratio gives a continuous indication of performance. Sodium
is typically more conductive than the hardness minerals it displaces, yielding a higher
conductivity at the outlet. A ratio approaching 1 indicates that hardness ions are breaking through
and that regeneration is needed.
Softening Ratio =

Steam Power Measurements

The three conductivity measurements in power plants relate to water chemistry parameters as
follows:
Specific conductivity -- chemical treatment level
Cation conductivity -- total anion contaminants
Degassed conductivity -- non-volatile anion contaminants
Cation minus degassed conductivities -- carbon dioxide
The 9782 Standard Range Analyzer/Controller includes a complete menu of field-selectable
functions for these determinations. In addition to specialized high purity temperature
compensation for specific and cation conductivity, the 9782 includes reboiler measurement
functions to automate ASTM Test Method D4519 for determining anions and carbon dioxide.
7/99 9782 Series Conductivity/Resistivity Analyzer/Controller - Operator's Manual Appendix B - 3
(Hard) Water Supply
Cell 1
a/n 23192
Cell 1
Cell 2 Typical Ratio Range is 1 to 1.25
Cell 2
(Soft) Treated Water
Two-Cell Applications