Fluoride Analyzer and Control System

The Model ETX Universal Transmitter is used in combination with the S80 Fluoride Ion Selective Electrode to achieve a cost effective Fluoride Analyzer.
The Fluoride Ion Selective Electrode cartridge develops a millivolt potential proportional to the concentration of free Fluoride ions in the measured solution. The model S80 Fluoride Ion sensors are used with the Model ETX Transmitter with its dual channel and pH compensation capabilities. These analyzers will measure free fluoride ions from 0.02 ppm to 2,000 ppm in the optimum pH range of 5-8 pH. Outside this pH range, large errors will occur in the acid range and small errors will occur in the alkaline pH ranges. In acidic solutions fluoride ions react to form hydrofluoric acid, HF, pKa = 3.2, at 3.2 pH half of the available fluoride ions are HF and half are the measurable F–. This characteristic can easily be compensated for by adding a pH sensor into the measurement contoller.

The EMEC NPED Series of Off-Line Flow Cells / Probe Holders offer a bowl design, which is easy to remove, clean and maintain. A wall mount bracket is standard, with options for Clear or Black Bowls to limit Algae growth for outdoor installations. We are also able to customize the amount and size of threads to accommodate your specific probe mounting application.