Ideal For A Wide Variety of Aqueous Environments Including Drinking Water, Wastewater, Rinse Water and Cooling Water

Electro-Chemical Devices has developed a flexible, user-friendly series of sensors for chlorine analysis, designed to easily and cost-effectively fit into chlorine monitoring systems in a wide variety of aqueous environments. The FCA-22 Free Chlorine Sensor, TCA-22 Total Chlorine Sensor and CDA-22 Chlorine Dioxide Sensor are high-accuracy amperometric sensors that are ideal for fresh water applications including monitoring of industrial cooling and rinse water, drinking water and wastewater.

FCA-22 Free Chlorine Sensor
The Model FCA-22 Free Chlorine Sensor is a low-maintenance, high-accuracy amperometric free chlorine sensor ideal for most aqueous environments. It features a long-lasting sensor that minimizes part replacement and technician labor expenses. The FCA-22 precisely measures free residual chlorine from 0.05 to 20.0 ppm Cl2, 5 to 9 pH and at temperatures from 32 to 122°F (0 to 50°C).

TCA-22 Total Chlorine Sensor
The TCA-22 Total Chlorine Sensor is designed for use in drinking water, industrial cooling and rinse water, wastewater or other fresh water samples containing chlorine in the range of 0-20 ppm, operating at a temperature range of 0-45°C. It is ideal for application in municipal water systems and a wide range of water-based processes in the chemical, electronics, electric power, food/beverage, oil/gas, pharmaceutical, pulp/paper and many other industries. The TCA-22’s amperometric sensor features a three-electrode design that measures all chlorine species in the water, combined chlorine and free chlorine. The sensor is constructed with one gold cathode, one silver halide anode and a 304 stainless steel counter electrode which provides a stable base potential, minimizing drift for higher accuracy.

CDA-22 Chlorine Dioxide Sensor
The CDA-22 Chlorine Dioxide Sensor is a high-accuracy polarographic amperometric sensor with gold cathode and silver chloride anode and PTFE membrane. It designed to measure chlorine dioxide in concentrations ranging from 0.05-20 ppm CIO2and operates at a wide temperature range of 0 to 50°C (32 to 122°F). It is ideal for applications in municipal water systems, industrial cooling and rinse water, wastewater or other fresh water samples. The low-maintenance CDA-22 can run for up to one year between electrolyte/membrane changes.

Panel Mount System Solution
The FCA-22, TDA-22 and CDA-22 Chlorine Sensors are also available as turn-key panel mount systems, featuring a simple “plumb-and-play” design combined with ECD’s highly intelligent C22 Analyzer/Controller. These chlorine measurement systems are pre-wired and panel-mounted, featuring automatic pH compensation and flow control for superior chlorine monitoring.

Ideal for the Activated Sludge Process, Return & Waste Activated Sludge, Paper Manufacturing Filtrate, Blending/Mixing Applications, Environmental Runoff

Engineers in search of a precise, highly reliable, low-maintenance water quality monitoring solution for wastewater treatment and other applications where suspended solids and turbid conditions are present will want to learn more about the Triton TR8 Analyzer from Electro-Chemical Devices (ECD).

Accurate measurement of suspended solids is critical to maintaining the proper level of activated sludge in an aeration basin. Adjustments to the return and removal rates of the activated sludge can improve the efficiency of the basin in reducing the COD and BOD of the mixed liquor. The TR8 is available with immersion fittings for service in the aeration basin or insertion fittings for the return and waste activated sludge lines.

The high range TR8 Analyzer is used to measures suspended solids or turbidity at levels greater than 500 NTU, with output available in multiple units: 0.00-9999 FNU, 0.00-9999 ppm, 0-300g/l and 0-200 percent. The TR8 TA sensor features an error rate of less than 5 percent of reading with repeatability greater than 1% percent of reading.

The Triton TR8’s sensor features a unique multi-beam optical assembly. The first light beam is a reference detector that c ompensates for changes in the LED light source caused by aging or other variables. The second light beam detects the short path length, which is best of high concentration measurement. The third light beam measures the longer path length, which is best for lower concentrations.

The Triton TR8 utilizes a highly intelligent microprocessor-based design. Its sensor electronics constantly adjusts suspended solids and turbidity signal readings versus the reference detector for superior measurement accuracy. A built-in digital filter helps to suppress potentially interfering signals while self-monitoring diagnostics assure high reliability.

The Triton TR8’s sensor assembly relies on a long-life near infrared LED light source (880 nm), and the 90-degree scattered light method in accordance with ISO 7027 / EN 27027. The sensor is factory calibrated in formazine, FNU (Formazine Nephelometric Units), and is plug-and-play ready for applications. Two nonvolatile memory banks are also available onboard to store user-initiated calibration data.

Featuring an inclined face that is oriented into the liquid flow for optimum self-cleaning, the rugged Triton TR8’s sensor assembly greatly reduces plant maintenance requirements to the occasional manual sensor swiping with a soft cloth. An optional automated mechanical wiper also is available for heavy-duty service environments or for difficult-to-reach sensor locations.

The Triton TR8’s sensor was developed for rugged water treatment environments, designed to operate at ambient temperatures from -5 to 50°C (20-120°F). It withstands pressures up to a maximum of 6 bar at 25°C and 1 bar at 50°C.

The TR8’s transmitter digitally communicates with the turbidity sensor and provides a 4-20 mA output and alarm relay. The TR8’s controller features ECD’s multi-bus architecture, with up to 2 outputs and 4 SPDT relays. It includes a configurable display and HART protocol communication is available as well. The turbidity sensor can be located up to 200 m away from the controller.

Monitoring For Municipal and Industrial Water and Wastewater Treatment Systems

The modular S10 Ion Selective Electrode (ISE), Compressor and Analyzer System from Electro-Chemical Devices (ECD) features the AC10 Air Blast Spray Cleaner designed for sensor self-cleaning and the highly intelligent multi-channel C22 Smart Controller. This flexible system allows process and plant engineers to maintain accurate measurement of multiple common parameters, reduces maintenance cycles and extends sensor life to decrease technician time and reduce plant operating costs.

ECD’s S10 Immersion/Insertion Style Sensor is a rugged, fully re-buildable sensor featuring a 316 stainless steel body with a sensing element, a temperature module and a signal conditioner for the process variable. Ion specific cartridges are available for the measurement of Ammonium, Bromide, Chloride, Cyanide, Fluoride, Sulfide, Calcium, Potassium and Sodium ions. The S10 Sensor with ISE cartridges is ideal for a wide range of fluid analysis applications required in industrial and municipal water treatment applications. In addition to specific ions, the S10 Sensor can also be configured for the measurement of pH, ORP, DO and Conductivity/Resistivity.

The AC10 is an Air Blast Spray Cleaner for Sensors that is available as either a single or dual channel system for use with the S10 and other ECD Sensor designs. It helps maintain sensor measurement accuracy in turbid water conditions by preventing the buildup of biofilms and other soft coatings, decreasing sensor maintenance cycles and helping to cut plant operating costs.

The AC10 Air Blast Spray Cleaner reduces sensor cleaning time and the amount of chemicals used for unnecessary water treatments performed due to inaccurate sensor readings caused by films and coatings that develop over time on the sensors. The AC10, when combined with a C22 Smart Controller and an S10 spray cleaning head uses pressurized air to generate an area of high turbulence in the water surrounding the measurement end of the sensor.

Offering a highly reliable, high current contactor that assures years of trouble free service, the AC10 Air Blast Spray Cleaner is available with either a 115 VAC 3.0 Amp or 220 VAC 1.3 Amp Air Compressor. It is housed in a rugged, corrosion resistant, fiberglass reinforced polyester enclosure. Installation options for the AC10 include wall mounting or an optional 2-inch handrail mounting system.

The multi-channel C22 Smart Controller provides simplicity in a powerful package, allowing for incredible flexibility in the selection of inputs and outputs. It features Multi-Bus Architecture that allows up to four sensor inputs, six outputs and eight relays to be configured into the C22 Controller.

The C22 Smart Controller uses its internal timers and relays to control the period and duration of the AC10 Spray Cleaner’s cleaning cycles. The period between cleaning cycles and the cleaning duration are easily adjustable in the C22’s setup menu.

The new Model DCA-23 Seawater Dechlorination Analyzer from Electro-Chemical Devices (ECD) is a low maintenance measurement solution that requires no chemicals to monitor seawater chlorine levels accurately in a wide range of industrial process and municipal water treatment applications.

Seawater has multiple process industry uses, including heat exchange systems at LNG terminals, oil/gas refineries, electric power plants and SWAC systems (salt water air conditioning) in commercial buildings. Seawater desalination plants also chlorinate and dechlorinate the water before processing. The chlorination of seawater inhibits the growth of marine life on the various filters, screens and heat exchanger surfaces, but the seawater must be dechlorinated for environmental reasons before it is discharged back into the original water supply.

The DCA-23 is a single-purpose analyzer that monitors chlorine in seawater from 0.0 to 2.00 ppm. It features an economical, low-maintenance design that requires no chemicals. It measures the pH, temperature and Total Residual Oxidant (TRO) of seawater and converts them into an equivalent ppm chlorine value, which is displayed to conform with existing conventions. It features a minimum detection limit (MDL) of 0.014 ppm and a limit of quantification (LOQ) of 0.044 ppm, making the DCA-23 Analyzer suitable for monitoring in environments with the most stringent dechlorination regulations.

The DCA-23 features three sensors, pH, TRO and temperature. The pH sensor measures from 0-14 pH, the TRO sensor measures from ±1500 mV and the temperature sensor measures from 0-100°C. The DCA-23 with its tri-parameter monitoring, is the ideal seawater chlorine analyzer for a wide range of applications.
During the re-gasification process at LNG terminals, large quantities of chlorine-treated seawater are used to heat the LNG heat exchangers. Seawater gradually raises the temperature of cold liquid natural gas changing it from a compressed fluid into a gas for distribution through the service pipelines. Recycling the seawater requires dechlorination monitoring with the DCA-23.

Steam-driven turbines at electric power plants generate much of the world’s electricity. Seawater cooling is employed at both thermal and nuclear power plants in coastal regions. The seawater flows over heat exchangers and condenses the steam used to drive the turbines. The cooling is accomplished with chlorinated seawater, which requires monitoring with the DCA-23 before discharge. Similar heat exchange processes are utilized by oil/gas refineries.

In water desalination plants, seawater is treated by reverse osmosis (RO) to remove the salt. The intake seawater is treated with chlorine to kill algae and other organisms prior to the reverse osmosis process. The RO membranes are degraded by chlorine so the chlorinated seawater must be dechlorinated before contacting the membranes. The DCA-23 is ideal for monitoring the dechlorination process.

The DCA-23 Seawater Dechlorination Analyzer is available in five configurations
1. Loop powered, 4-20 mA = 0.00 to 2.00 ppm Cl
2. 24VDC powered with two 4-20 mA outputs, Cl and pH
3. 24VCD powered with two 4-20 mA outputs and two alarm relays
4. 110 VAC powered with two 4-20 mA outputs and two alarm relays
5. 220 VAC powered with two 4-20 mA outputs and two alarm relays. The maximum system pressure and temperature rating is 50 psig at 60°C.

The DCA-23 Seawater Dechlorination Analyzer is an easy to install plumb-and-play device when ordered as a complete Uni-Strut rack mounted system and it is also available as separate components. The rack mounted system is plumbed with 3/4” schedule 80 pipe, with slip fittings for input and drain. The T-23 Analyzer, 2 sensors, pH flow cell and TRO flow cell are rack mounted using 1 5/8” x 1 5/8” Uni-Strut rail.

Process and plant engineers in search of advanced industrial analytical instrumentation solutions will find the new Electro-Chemical Devices, Inc., provides them with applications guidance and valuable installation tips for devices measuring pH, oxidation reduction potential (ORP), specific-ion (pION), conductivity and resistivity, dissolved oxygen (DO), Turbidity, HYDRA Nitrate and HYDRA Ammonium, as well as free and total Chlorine.

ECD’s 2010 CD Catalog features an expanded product line, with new devices designed to measure Ammonium, Turbidity and DO. The new, virtually maintenance-free HYDRA Ammonium Sensor, featuring reliable ISE technology, is designed for direct nutrient load (NH4+) monitoring in the aeration basins of Waste Water Treatment Plants. The new Triton TR8 Turbidity Analyzer is a nephelometric sensor designed for use in water and wastewater. The Triton DO8 Dissolved Oxygen Sensor, designed for environmental water, excels in aeration basins, fish farms or municipal applications.

ECD’s wide line of liquid analytical products includes Sensors, Transmitters, Controllers, and Portable Analyzers. The company offers Engineered Systems for Cooling Tower Control or Boiler Blowdown Control as well as user defined customized products. Featuring rugged industrial designs, they are suitable for a wide range of applications in corrosive, extreme temperature, explosive and other demanding conditions.

ECD’s advanced liquid analytical instruments and sensors provide the extreme accuracy, reliability, durability and quick response demanded in many different industries, such as Biotech, Chemical, Food/Beverage, Metals/Mining, Oil/Gas Refining, Pharmaceutical, Pulp/Paper, Semiconductor and water/wastewater treatment. Wherever accurate measurement combined with applications flexibility and long-life are required, the company’s analytical instruments are frequently the industry’ choice based on their proven performance, reliability, ease-of-maintenance and low cost of ownership.

Boiler Control Applications, Blowdown Control, Condensate Monitoring, Leak Detection on Heat Exchangers, Steam Purity Measurements

Engineers in search of a rugged conductivity sensor for high pressure, high temperature environments will find that the new Electro-Chemical Devices (ECD) offers maximum reliability and a dramatically increased usable lifetime for harsh industrial processes.

The Model CSX2 is a two-electrode sensor that measures electrolytic conductivity at a range of 1.0-50,000 µS. It is designed for high temperature service up to 200°C at pressures of 250 psig. At temperatures below 100°C, the CSX2 is rated for pressures up to 400 psig.

The Model CSX2 features rugged construction with a 316 stainless steel outer body and center electrode, separated by a PEEK® (poly ether ether ketone) internal insulator. All possible leak paths are double-sealed with EPR O-rings for maximum on-stream reliability. Industrial hot water processes are a severe environment for any elastomer, and the EPR front O-ring seals bear the brunt of the chemical attack to allow the back seals to remain relatively unaffected. This redundant design increases the reliability of the CSX2, dramatically increasing the usable lifetime of the sensor in harsh applications to reduce instrument maintenance requirements and total lifecycle costs.

With its rugged design and superior accuracy, the CSX2 provides highly accurate and reliable conductivity measurement in a wide range of demanding industrial process plant applications. It is suitable for use in petrochemical refining, electric power generation, food/beverage, metals/mining or anywhere high pressure steam boilers are in use.

The CSX2 features a weather-resistant aluminum junction box that allows easy access to the terminal strip or the signal conditioner. The junction box is both explosion-and weatherproof and features a 0.75-inch FNPT connection. It includes a low temperature (80°C) 0.5-inch polyamide cable gland with reducer bushing.

The signal conditioner amplifies the conductivity signal, allowing noise-free transmission for hundreds of feet. A wide range of signal conditioners are available for the CSX2 sensor to optimize the conductivity measurement at specific ranges. The signal conditioner can be mounted in the integral junction box at temperatures below 70°C or located in the instrument or remote junction box at higher temperatures.

The measurement of conductivity and resistivity in liquid water-based solutions is an essential requirement in a wide range of industrial processes.  Conductivity and resistivity measure the electrical conductivity of a solution, which correlates to the purity of the water or the amount of dissolved ions in the liquid.

Accurate, reliable conductivity data is important when either recycling water for re-use within the plant to protect sensitive equipment and/or when discharging water from the plant into wastewater treatment systems. The data helps ensure the effluent meets local, state and federal water quality standards to avoid plant shutdowns and costly fines.

Engineers and technicians searching for a high-performance, cost-effective ORP sensing solution will find that the S10 and S17 ORP Sensors from Electro-Chemical Devices (ECD) feature a no-glass design with platinum or gold sensor tips to operate safely in a wide range of the most demanding applications.

ECD’s ORP S10 and S17 Sensors come with easily replaceable ORP cartridges that plug into a rugged 316 stainless steel body, which incorporates the sensing element, a temperature module and a signal conditioner with cabling. The S10 is an immersion or insertion style sensor, and the S17 is a valve retractable style sensor.

ORP (oxidation reduction potential) refers to the tendency of a solution to gain or lose electrons when a new substance is introduced into it. The accurate measurement of ORP is useful in the treatment of municipal drinking water and municipal wastewater, as well as in a wide range of industrial processes with applications in petrochemical plants, electronics and semiconductor fabrication, metals and mining, biotech, pharmaceutical, power generation, aquatic parks and environmental monitoring systems.

ECD’s ORP electrode cartridge features rugged PEEK (polyetheretheketone) construction and measures from -2,000 to +2,000 millivolts over a wide temperature range of 23 to 176OF (-5 to 80OC). The ORP sensors are available with the SENTINEL option to monitor the reference electrode potential and display measurement drift graphically and/or with a 4-20 mA output providing a predictive maintenance alert before reference electrode degradation causes problems to occur.

The S10 and S17 sensors replaceable electrode cartridge also can be selected to measure pH, dissolved oxygen, conductivity and resistivity in addition to ORP. Featuring field proven construction materials selected for long life and accuracy, the cartridges provide specific solutions for the most demanding measurement requirements and support diverse industries with a variety of configurations and materials.
The S10 immersion or insertion style sensor is designed with a 0.75-inch MNPT compression fitting as the process connection. This construction feature allows a variable insertion length to accommodate installation in pipe tees, flow cells or through tank walls. If the trunk fitting is reversed, the sensor can be installed in a pipe for submersion in a tank.

The S17 retractable style sensor is designed with a 1-inch MNPT ball valve, a 1-x-0.75 inch reducer and a 0.75 inch MNPT compression fitting to provide the process connection. Loosening the compression fitting allows the sensor to side freely through the ball valve for insertion either into the process or retraction from the process. Once the sensor is retracted, the ball valve can be closed and the sensor can be removed for maintenance or replacement without shutting down the process line.

To create a complete ORP measurement system, the S10 and S17 Sensors also can be integrated with ECD’s C22 Analyzer. The Multi-Bus design enables customization of up to four inputs and six outputs in a convenient 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 8 optional SPDT relays are just a few of the powerful features in this easy to use instrument.