Conductivity/Resistivity Analyzer/Controller
Specific
Conductivity
Sample 
Cell 1
9782 Analyzer
Cation
Exchanger
Cation
Conductivity
Cell 2
Specific
Conductivity
Cation
Degassed Conductivity
7082 Analyzer
Conductivity
9782 Analyzer
(Anions)
Sample
a/n 23193
Carbon Dioxide by Calculation
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Cation | Reboiler |
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Exchanger |
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Sodium Hydroxide & Hydrochloric Acid Concentration Measurements
The measurement range of sodium hydroxide by conductivity is limited by temperature. The conductivity is limited by temperature. The conductivity of sodium hydroxide reaches a maximum value near 14% at 0º C and 29% at 100º C. Near the maximum there is poor resolution and no reliable way to know which side of the peak is being measured. Therefore, the 7082 measurement range is restricted by temperature to assure reliable values. Maximum concentrations are 10% at 0º C, 13% at 25º C and 20% at 75º C and above, with linear interpolation between these points. Operation above these limits gives a flashing display.
The measurement range of hydrochloric acid is restricted to less than 15.5% above 40º C and less than 18% below 40º C.
Appendix B - 4 9782 Series Conductivity/Resistivity Analyzer/Controller - Operator’s Manual | 7/99 |
