Real-time free chlorine sensor

Utilizing amperometric technology for real time free chlorine measurement, the FCL Series Free Chlorine Sensor from Sensorex offers low-maintenance and long life to deliver a low cost of ownership. The amperometric sensor measures free chlorine in real time and is available in three different measurement ranges: 0-2ppm, 0-5ppm and 0-10ppm. The sensor’s long-life design reduces maintenance cycles, which lowers lifecycle costs with less frequent sensor membrane cap/solution replacement and reduced technician installation time.

After hypochlorous acid (HOCl) diffuses through the sensor’s membrane, it is electrochemically reduced, releasing electrons and creating a current flow proportional to the free chlorine concentration in the medium outside the sensor. The low current output is then conditioned to a 4-20 mA direct output. The sensor operates in a range of 4-11pH, a temperature range of 0-45°C and at a maximum pressure of 1 Bar.
                            
The FCL Sensor can be used in new and existing Sensorex FC72 Flow Cell installations. It can also be installed as a replacement for other brands of free chlorine 4-20 mA output free chlorine (FCL) sensors in flow cells fromother manufacturers. The FM001 Flow Meter is available for installation in conjunction with the FCL Sensor to condition the liquid flow for even higher levels of system stability. The combination of the flow meter with the FCL sensor results in superior measurement accuracy.

The series features a 4-20 mA isolated output signal that is compatible with both Programmable Logic Controllers (PLCs) and Distributed Control Systems (DCS). It easily supports a wide range of applications from small stand-alone, single-point measurement stations to large plant wide network systems with control rooms that monitor numerous points of measurement.
 
The free chlorine sensor is suited for a broad range of water applications in municipal potable water treatment, municipal wastewater, industrial plants and commercial facilities. These applications include municipal intake water, wastewater effluent, swimming pools, amusement parks, food processing disinfectant stations, aquaculture, commercial property lagoons and more. Edited by Constanze Schmitz