ECD introduces DCA-23 Seawater Dechlorination Analyzer
March 10, 2011 -- 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; and 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 ¾” 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 1⅝”x1⅝” Uni-Strut rail.
About Electro-Chemical Devices
Electro-Chemical Devices (ECD) is a manufacturer of liquid analytical process instrumentation. Founded in 1977, ECD has been in business for over 30 years.
Danfoss announces VACON 20 AC drive
The drive’s size and power range, combined with PLC functionality, makes the VACON 20 a solution for packaging machine applications.
Pentek introduces Jade family of FPGAs
Evolved from the designs of the Pentek Cobalt and Onyx architectures, Jade is based on the Xilinx flagship Kintex UltraScale FPGA.
Pepperl + Fuchs introduce F192 long-range tag reader
The F192 is a self-contained reader, with the antenna, amplifier, and reading electronics. The F192 puts out the maximum power allowed by the FCC,...
OES introduces AR59-AV vertical rotation stage
The AR59-AV vertical rotation stage is intended for: Micro robotics, metrology, vision systems, positioning of mirrors and lasers, laser machining...
MicroPower Direct introduces MR50SRW power converters
The MR50SRW series is has been designed for use in rail and transit applications. They provide the reliability, size, temperature operation and...
Phoenix Contact helps Formak automate production
Forpak, an OEM in the food packaging industry, wanted to minimize cabinet space and reduce labor costs. While working with Phoenix Contact, Forpak...
Fluke announces aquistion of eMaint Enterprises
Fluke tools, software and data expertise together with eMaint’s SaaS offering represents a convergence of maintenance solutions to ensure uptime...
BEI Kimco's VCA part of NASA's OSIRIS-Rex asteroid mission
For this space mission, a customized BEI Kimco moving magnet VCA was attached to, and will position the moving mirror assembly of the OSIRIS-Rex...
Rockwell to showcase solutions for Water and Wastewater Facilities at WEFTEC 2016
Featuring its PlantPAx platform, Rockwell Automation will demonstrate process and automation solutions for efficient process control, monitoring...
Siluria names Erik Scher as Chief Operations Officer
As COO, Dr. Scher is responsible for the company's operating activities, including its OCM demonstration plant in Texas and multiple pilot plants...