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Benefits of water level radars are out in the open

The widespread winter floods have once again highlighted the issues of flood warning, urban and rural drainage capacity, ‘pinch and blockage points’ for flood debris. This has put the accurate and reliable monitoring of open water levels under the spotlight.

Whether for early warning

flood alarms, the monitoring of drainage, dissipation or capacity for water management: it's the actual level measurement at the front end that is the crucial ‘eyes and ears’ for any remote telemetry/monitoring system. A newly published case study from VEGA describes how radar level technology offers a very flexible, low cost, low maintenance solution, which is easy to deploy, with very good accuracy and reliability, that can assist in this important area. The case study features VEGA

radar level sensors being installed throughout a council drainage area in the North East Midlands. This council has undertaken a wide scale program of changing out the existing ultrasonic and pressure sensors, as well as installing systems at brand new measurement points that were previously inaccessible due to infrastructure requirements. This has been enabled via the VEGA non-contact ‘water radar’ level sensor which has a 2mm accuracy over its 15m range. This replacement system was chosen as it is unaffected by temperature, wind, rain or surface turbulence. The need for the civil engineering work on sensor measurement protection structures, like stilling tubes, wells and conduits required for other technologies is removed, thus saving both time and complexity. The radar level transmitters are combined with ‘industry


Compact, waterproof and accurate,

standard’ Isodaq Hydrologic Frog battery powered GSM/GP R S data loggers, to form remote outstations. Due to their compact size, they are easily mounted to make the installations discrete, with minimal electrical infrastructure

Outstation system mounted on a bridge over tidal river

edge. The low cost radar sensors use little enough power to measure every 15 minutes and operate between 2-3 years on the battery pack integrated into the Frog unit, even with a measuring range of up to 15m. Both sensor and logger are flood proof, the radar has ‘overfill’ detection and IP68 protected to 2 bar (20m). There is a detailed case study

available, which features two quite opposite applications on ‘open water’ level measurement. One is over a short 2m range in an urban drainage environment, which had reliability and maintenance issues with other sensor types; the other over a long measuring range of 12m on a large tidal influenced river in a rural setting, at a site that would have been extremely difficult and costly to install and attain reliable readings with conventional technologies. The article shows not only the applications, but explains in detail about the fabrication and has pictures of the mounting of radar and data logger in one simple housing.

For a copy of this case study document about the initial phase of the project, including contact details of the council engineers involved, please e-mail: for a copy, or call 01444870055 to talk to a sales engineer for further advice, prices or to arrange a demonstration.


and no other civil engineering or work required, delivering obvious cost savings. The logger manufacturer worked alongside VEGA to modify their software to optimise the system. And, because these cost effective ‘stand alone’ measurement systems are faster to install, they reduce safety risks of prolonged working at the water's

VEGA Water Radar: The non contact solution for open water level measurement.

No echo loss from wind, rain or surface conditions, even cobwebs! Just reliable level monitoring for any open water or remote site. No stilling tubes, civil works or special mountings. Low cost unit, 15m range, 2mm accuracy and miserly enough on power to use with battery loggers.

So, what‘s stopping you changing the way you measure level? Phone: 01444 870055 E-Mail:

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