Water / Wastewater 39 New data loggers detect water losses early


Leaks in water pipe networks can result in significant water losses. Thanks to systematic monitoring of the network with Herman Sewerin’s SePem® data loggers, you can reliably identify existing leaks and catch new ones early on – much faster than with conventional methods.


In relation to the size of a measuring area, the volume of water initially escaping from a new leak is usually so low that it cannot be clearly distinguished from minimum night-time consumption when measuring the flow. In practice, many months often go by before the size of the damage is great enough to produce a flow volume that can clearly be identified as a leak. SEWERIN’s SePem® 100/150 can report the leak after just one night.


The SePem® 100 data loggers with integrated aerial are perfect for mobile use in the water pipe network. They are placed on fittings at measuring points in a specified section of network and record the level for a programmable period of time during the night – usually half an hour. The loggers are collected in the next day. The measurement data is transmitted to the SePem® 01 Master by radio. Noticeably high measurement values indicating a leak are immediately flagged up by an audible signal. This is a reliable way of detecting existing leaks. The data loggers are then successively inserted in other sections of the network until the whole network has been checked.


The SePem® 150 data loggers are designed for the stationary monitoring of water supply networks. They have an external aerial and are permanently fixed to fittings. The SePem® 150s record the minimum level every night for a programmable period of time, for example half an hour. The locations are periodically patrolled, for instance daily or weekly, when the noise loggers send their data telegrams to the SePem® 01 Master. Unlike the mobile application, there is no comparison of the absolute levels of two measuring points, but rather a relative change in the level at a measuring point means that a new leak can be very quickly identified.


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First Taiwan International Water Week serves as the platform for global exhibition and forum


Water level drawdown meter


The 101D water level drawdown meter, from Solinst, provides accurate depth to water measurements in wells, boreholes, standpipes, and tanks. The added drawdown function monitors falling hydraulic head during low flow sampling, pumping and other aquifer tests. Levels are read from durable flat tape, accurately laser marked every mm or 1/100 ft. Tapes are available up to 1500 m (5000 ft). The probe is submersible to 300 m (1000 ft).


More information online: ilmt.co/PL/p35o Water level, temperature and conductivity datalogger


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Organised by the Taiwan External Trade Development Council (TAITRA), the first edition of Taiwan International Water Week (TIWW) will be held at the Taipei World Trade Center, Hall 1 September 26-28, 2019. Major companies such as Aqua Care, Easywell, EMEC Taiwan, GEMUE Taiwan, ITRI, Lan Shan, Li Jing Viscarb, and Ye Sail will showcase their products among 150 exhibitors.


For the first time as the co-organiser, the Water Resources Agency (WRA) of the Ministry of Economic Affairs, Taiwan’s highest ranking water authority, will lead the Water Environment Recycling Association, Sinotech Engineering Consultants, National Taiwan University, and Chung Yuan Christian University to join the Water Industry Pavilion. In addition, WRA will organise the “Water for the Future” forum, at which global experts and industry leaders will share their experiences.


With a combination of IoT and ICT strengths, Taiwan excels in smart water technologies with annual exports of pumps, valves, pipes, meters and water purifiers exceeding US$2 billion. In Taiwan, the investment in water infrastructure is targeting smart water management and water reclamation, which will be supplying 10% of all water resources by 2030.


Moreover, TAITRA will be hosting Government Procurement Meetings of Water Resources and one-on-one business matchmaking meetings. It has already mobilized all its 63 overseas branch offices to invite buyers from all over the world to attend face-to-face meetings with exhibitors to build global partnership and future business opportunities. In conjunction with TIWW, the Circular Economy Taiwan and the Taiwan Innotech Expo will take place at the same time in the Taipei World Trade Center Exhibition Hall 1, serving to attract even more participants.


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The LTC Levelogger Edge, from Solinst, is a compact instrument that provides reliable datalogging of water level, temperature, and conductivity. It offers a number of desirable features including an 8-year battery life, memory for 27,000 sets of readings, high accuracy, 6 pressure ranges, and a titanium ceramic PVD corrosion- resistant coating. The LTC Levelogger Edge is excellent for providing a general indication of overall changes in water quality.


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49287pr@reply-direct.com Reliable Water Level Dataloggers Providing worry-free, accurate water level data


The Levelogger Series of dataloggers are self-contained water level recorders. They combine a durable corrosion-resistant Hastelloy pressure sensor, robust and reliable memory, and a lithium battery in a compact body that is easy to deploy.


Downloading water level data in the field is made convenient using the Solinst Levelogger App for your smart device, or the DataGrabber™ USB data transfer device.


www.solinst.com High Quality Groundwater and Surface Water Monitoring Instrumentation


Solinst Canada Ltd., 35 Todd Road, Georgetown, ON L7G 4R8 Fax: +1 (905) 873-1992


Tel: +1 (905) 873-2255 instruments@solinst.com


www.envirotech-online.com IET September / October 2019


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