WaterLink International - Geomares Publishing bv

Battery-powered chlorine monitor


Athenea is the new chlorine monitoring system for potable water networks from Halma Water Management (HWM). It is an autonomous, battery-powered chlorine analyser that provides continuous monitoring of concentration levels and transmits data automatically via cellular telemetry. This greatly reduces the need for time-consuming on-site ‘spot' testing, and obviously allows for much more frequently updated results.

The product uses proven amperometric technology for chlorine measurement, and also records pH and temperature levels for complete and accurate analysis. By using an innovative power-saving process, battery life is maximised and a full charge will power the analyser for at least 6 months. By drawing fresh water from the network for each reading, results are always current, and as no chemicals are used in the test the water can be either re-introduced into the network or siphoned off as waste.

The result is a system that requires no external power source, can be deployed anywhere, sends results automatically to a chosen remote location, and produces accurate results comparable to those used at a mains-powered treatment works. Athenea is therefore ideally suited for installation in tanks, reservoirs and non-powered network locations. A portable version, housed in a Pelicase, is also available for survey use, where the unit's waterproof IP68 rating could prove particularly useful.

The analyser can be calibrated and programmed remotely, and operates at a range of 0-20ppm, effective within 0-50 degrees Celsius and pH 4-8. Logged readings are then transmitted by a Radcom datalogger using GSM/SMS telemetry, providing open-protocol results compatible with any SCADA system. Athenea has already been extensively tested in Spain, where over 50 units have been deployed successfully in numerous cities. HWM also has a demonstration system installed at their test site in Cwmbran (South Wales), where interested parties are invited to view it in action and find out more about the features and benefits it can offer.

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