Water/Wastewater A Major Advance in Non-Invasive Flow Measurement


Pulsar Process Measurement (UK) have launched Flow Pulse, a compact and cost-effective pipe flow monitor that promises exceptional repeatability, accuracy and simple installation with no down time. Flow Pulse is perfect for monitoring flow rate in fluid distribution systems, for pump efficiency checks, in process plant or sewage pumping stations.


Flow Pulse (patent pending) is a leap forward in flow measurement and in ease of installation - no need to break into a pipe, or to get any engineering involved, just clamp a small sensor to the outside of a pipe and immediately get a reliable, repeatable flow measurement (tools required = one screwdriver). Virtually no installation costs, no interruption to service, clean and simple.


Flow Pulse uses a novel spread spectrum analysis technique never before used in flow monitoring. It introduces a radical new Digital Signal Processing approach for exceptional repeatability:


Ultrasound is fired through the pipe wall at 90 degrees to the flow via a tangentially mounted high-output ceramic, then refracted at angles across the axis of the flow and subsequently reflected from bubbles, particles and vortices in all directions and at a wide range of frequencies. The wide, refracted, ultrasonic beam maximises the ultrasound energy that could be captured from flowing particles. These multiple reflections are received back into the unit via a second crystal.


The mass of data generated is analysed using Flow Pulse’s Refracted Spread Spectrum Analysis (RSSA) digital signal processing platform to derive flow information. RSSA analyses and integrates the received signals over a wide frequency range, then slices them for real-time analysis and flow rate calculation.


Flow Pulse operates in a flow range from as little as 0.3m/s through to 4m/s, with a minimum particle size of 100µ and concentration of 200ppm or above (the equivalent of hard water).


Pipe material can be rigid plastic, stainless steel, mild steel or cast iron. Corrugated pipe is not an issue and even light corrosion will give a good result. Flow Pulse provides repeatability and accuracy of around ±5%.


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Self-Contained, Battery-Powered Wireless Photoelectric Sensor


The first self-contained wireless photoelectric sensing solution for multiple monitoring and control applications has been introduced by Banner Engineering (Belgium), the company reports. The new SureCross Wireless Q45 includes a sensor, radio and internal battery power supply in a single compact and robust housing.


A variety of sensing modes are available in the new self-contained wireless series, allowing for functions including presence/absence, alignment, position, counting, monitoring and detection. Battery life is up to five years depending on sensor model and application, and the housing is IP67/NEMA 6 rated.


Compared with wireless solutions requiring a separate sensor connected by wire to a radio, the self-contained units make it more economical to add the benefits of wireless communication for both OEMs and end users. They are suitable for many industries including automotive, food and beverages, material handling, waste management, water supply and mobile equipment.


Signals from the sensors are received at a wireless network gateway that interfaces with all common PLCs, HMIs and other industrial control systems. Basic gateways control two and six sensors, and the flexible system can be expanded for larger scale applications.


Using a simple binding procedure, new sensors can be added to the network in minutes since there is no need to install any cabling.


The wireless sensors are designed for rapid, low-cost deployment and dependable operation in a wide range of situations. These include providing remote input for dry relay contacts, replacing failed cable runs, adding sensors to mobile applications, replacing complex festooned or ribbon cabling and connecting locations that were previously impractical or impossible.


The secure, proprietary SureCross radio provides PLC level functionality and reliability over a long range of 1km/3,000 ft. Data is transferred reliably by using frequency hopping and a proprietary protocol; malicious hacking is impossible. The system does not affect other wireless devices in the 2.4GHz ISM band. An alarm output is available in case the radio link is lost.


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35


ANALYTICAL INSTRUMENTS


AMI Codes-II CC – Continuous Measurement of Free, Combined and Total Chlorine


Blanket Success


Partech's (UK) production team have been working flat out to supply Severn Trent a company wide suite of portable Sludge Blanket Detectors. The order for 380 units is the largest single contract for this type of product in the company's 48 year history.


Severn Trent made the decision to move away from the traditional dipping tube type alternative for a variety of reasons. These included the safety issues that relate to the manual handling of long, awkward columns of contaminated water in the constricted space available on settlement tank bridges. In addition to overcoming the safety problems, Partech's SludgeWatch 715 is highly repeatable which makes the interface detection process much less dependent on operator judgement.


The SludgeWatch 715 is exceptionally easy to use, with no calibration or setup necessary. All the operator needs to do is give the sensor a quick wipe when the tank has been dipped. There is no need to waste time cleaning out a long fragile measuring column and the measurement itself is carried out in seconds.


Commenting on the order, Area Sales Manager Clive Teobald says, “ we were delighted to receive this order, our production team pulled together to supply Severn Trent on time and allow deployment of these detector across the whole of Severn Trent”.


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Introducing TADPOLE


- Remote site data collection without leaving your desk


Capturing real-time data from remote sites has never been easier with Tadpole, the latest addition to ISODAQ’s range of GPRS data loggers. Just plug in one of these digital sensors and Tadpole logs data and transmits back to your PC via the internet whenever you need it :


pipe-flow meters


tipping-bucket rain-gauges water quality sondes


borehole depth level probes


Features include : • Low-cost GPRS SIM cards • Waterproofed to IP68


• Long-life batteries last for years • Digital inputs include SDI-12 • Fits inside 50mm diameter tubes


www.isodaq.co.uk sales@isodaq.co.uk 01885 483789


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 Measurement is based on DPD method (ISO, ASTM).


 Integrated pH-measurement with temperature compensation.


 Applicable for water containing additives like cyanuric acid.


 Greatest long-term stability by automatic zero point adjustment before every reading.


 Sample flow and reagent level monitoring.


 Add-on module for automated chemical cleaning of flow-through cell and photometer.


Ask for technical documentation or check our homepage


www.swan-analytical-usa.com SWAN ANALYTICAL USA, Inc.


225 Larkin Drive · Unit 4 · Wheeling · IL 60090 Phone 847 229 1290 · Fax 847 229 1320 info@swan-analytical-usa.com


Reader Reply Card No. 201 www.envirotech-online.com IET November / December 2012


Visit us at POLLUTEC Lyon, FR


27. - 30.11.2012 Hall 6, Aisle F Booth 064


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