• Free Chlorine Measurement now as Simple as 1-2-3


Free Chlorine Measurement now as Simple as 1-2-3

Jan 13 2009

The measurement and control of Free Chlorine has never been easier than with the new FCA-22 Analyser System from Electro-Chemical Devices, Inc., (USA) which features a virtually plumb-and-play design. The panel mount design of this analyser system comes factory pre-wired and with assembled flow tubing. ECD’s advanced sensor and controller technologies allow installation and commissioning to be completed
in just three easy steps utilizing simple tools.

Municipal water system and industrial process engineers will find the new advanced FCA-22 Analyser precisely measures free residual chlorine while also offering a low cost-of-ownership. It features a long-lasting sensor that minimizes part replacement and technician labor expenses.

The FCA-22 Analyser provides highly reliable on-line continuous free chlorine measurement in a complete systems package. It is designed to monitor free chlorine in drinking water, rinse water, cooling water and other fresh water samples from 0.05 to 20.0 ppm Cl2, 5 to 9 pH and at temperatures from 32 to 122°F (0 to 50°C).

The design criteria for ECD’s new sophisticated chlorine sensor were high accuracy with a minimal maintenance requirement. Constant head flow control, automatic pH compensation and a rugged amperometric Cl2 sensor keep maintenance to a minimum with unsurpassed accuracy and performance.

The FCA-22’s constant head flow control device (CFD) maintains the optimum water flow past the sensor over a wide range of incoming sample flow rates from 10 to 80 gallons per hour. The incorporation of a pH sensor in the FCA—22 provides accurate compensation for samples from 6.5 to 9 pH, which eliminates the need for an expensive pH sample conditioning system. The Cl2 sensor’s polarographic, gold/silver PFTE membrane
construction extends sensor life to reduce operational costs.

With many other free Chlorine sensor technologies, electrolyte replacement is a monthly or bimonthly task that requires the constant purchase of refill kits. A technician is required to refurbish and re-install the
sensor and reconfirm the calibration, which results in unnecessary parts and labour expense that adds up over the complete life of the analyser. The new FCA-22’s advanced design extends sensor life to approximately
one year.

The FCA-22’s multi-bus controller design enables easy customization of various outputs and control functions. The standard FCA-22 has two SPDT relays and a 4 to 20 mA output for the free chlorine signal, with additional
outputs available as an option.

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