The U.S. Environmental Protection Agency’s (EPA) Gulf of Mexico Program recently announced that the St. Tammany Parish, La., government received a...
Electro-Chemical Devices’ S10 and S17 Sulfide Analytical Sensors available
Municipal water engineers and plant technicians treating water for sulfates and hydrogen sulfide (H2S) will find that the new S10 and S17 Sulfide Sensors from Electro-Chemical Devices (ECD) provide instrumentation to help plants and processes operate smoothly and efficiently with lower operating costs, according to the company.
Sulfates and H2S are often present naturally in groundwater in areas near oil fields, coal mines, peat deposits and areas where geothermal activity occurs. They give the water a bitter taste and the odor of rotten eggs that, if left untreated, makes it unsuitable as a source of municipal drinking water. With proper analysis of sulfide levels and treatment, however, the water can then be made available to the public.
ECD’s S10 and S17 Sulfide Analytical Sensors provide analysis of sulfide levels. The S10 Sensor is an immersion or an insertion style sensor, and the S17 is a valve retractable style sensor. They are fully re-buildable and feature a 316 stainless steel body that incorporates the sensing element, a temperature module and a signal conditioner with cabling.
Sulfides are also commonly present in sewage and wastewater treatment plants. The S10 and S17’s pIon electrode cartridge measures the activity of “free” sulfide ions in solution in concentrations from 0.01 to 32,000 ppm over a pH range from 11 to 14 pH. The pIon can measure sulfide ions over a wide temperature range of 0 to 80ºC.
Both the S10 and S17 Sulfide Sensors utilize ECD’s replaceable electrode cartridges, which can be selected to measure pH, ORP, dissolved oxygen, conductivity and resistivity.
The S10 and S17 Sensors can be integrated with ECD’s C22 Analyzer, which features ECD's Multi-Bus architecture. The Multi-Bus design enables customization of up to four inputs and six outputs in a 1/2 DIN NEMA 4X enclosure. Channel comparisons or measurement compensation, configurable conductivity concentration curves, the graphical display of data and PID control on the outputs or up to eight optional SPDT relays are a few of features on this instrument.