DCA-23 Seawater Dechlorination Analyzer Is Accurate and Economical Chlorine Measurement Solution

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 0-100C. 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.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more