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SA Instrumentation & Control Buyers' Guide

Technews Industry Guide - IIoT 2018

Technews Industry Guide - Maintenance, Reliability & Asset Optimisation

 

Measurement solutions for the South African water industry
July 2018, Flow Measurement & Control


For over sixty years, Krohne has been active in the water industry. In fact, the German-based company first introduced its electromagnetic flowmeter (magmeter) for water, wastewater, additives and sludge in 1961. Since then, it has not only developed a complete portfolio for flow measurement, including partially filled pipes, but also level, pressure, temperature and process analytics to equip waterworks, sewage treatment plants and all networks in between.

Since magmeters remain the standard in water measurement, Krohne has widened its Optiflux portfolio to include many different liners for applications from clean water to sludge with high solid content. However, the development of standalone, battery-powered electromagnetic water meters has mostly taken place in the last ten years. Although it was demanded by customers as an alternative to mechanical meters for points where no mains power is available, the development of these meters depend on a special design of the measuring tube. Introduced in 2009, the Waterflux battery-powered flowmeter (certified to MID MI001 and OIML R49) has been a very successful product in the potable water market. It features a unique rectangular measuring tube design that does inlet or outlet sections, which allows for compact installation and a small overall footprint. Even better, there is no need for grounding rings because, as standard, the flow sensor has a reference electrode for grounding and a special coating allows for subsoil (IP68) installation.

Operation in remote locations

As water meters are often installed in remote locations, reducing the frequency of visits to the sites and the time spent on set-up and maintenance is crucial. This relies on aspects such as a simplified installation, integrated diagnostics, a long battery lifetime, remote communication options and low overall maintenance requirements of the meters. The features and options of Waterflux contribute to these targets and the device is continuously updated to keep up with modern requirements.

In terms of installation, the polycarbonate converter housing with protection class IP68 rating is now standard for both the compact and the remote version, that is, for temporarily flooded measuring pits. It features IP68 Mil connectors that do not require wiring on site, and a small installation footprint to fit into electrical cabinets. For locations where mains power is available, Waterflux is now offered with an external FlexPower unit to connect the meter to a power source on site, e.g. electrical grid, solar panel or a small windmill.

Integrated pressure and temperature sensor

The integrated pressure and temperature sensor allows the use of Waterflux for various tasks in drinking water networks: Flow and pressure measurement data are an important input for pressure monitoring, maintaining the water balance, district zoning (DMA) and for leak detection when comparison of pressure and flow values are used as methods. Eliminating the installation and wiring of external pressure sensors, the integrated device can provide an alarm when a programmed upper or lower limit is reached. The same applies for the integrated temperature sensor that can serve for quality monitoring of potable water, also without the need to open the line a second time. Alarms can be generated via the status output or via Modbus when critical limits for pressure or temperature are exceeded.

Current communication options meet water companies’ increasing demand for more measurement and status data. The Modbus RTU output offers an alternative to the two-pulse and two-status outputs. Transferred data includes measurement information (sum, forward and reverse counters, flow rate), status data (battery lifetime, meter status), actual values for pressure and temperature, and alarms. In addition, remote data communication solutions are also available off-the-shelf.

For more information contact Deon Rampathi, Krohne SA, +27 (0)11 314 1391, d.rampathi@krohne.com, www.za.krohne.com


Credit(s)
Supplied By: KROHNE
Tel: +27 11 314 1391
Fax: +27 11 314 1681/1693
Email: salesza@krohne.com
www: www.za.krohne.com
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Further reading:

  • Rotating vane flowmeter
    July 2018, Instrotech, Flow Measurement & Control
    The Vane Technology Principle, a method of measuring and monitoring the flow of different media trough piping, has been proven worldwide. Kobold flowmeters and monitors work with this proven principle. ...
  • Endress+Hauser’s Picomag flowmeter
    July 2018, Endress+Hauser, Flow Measurement & Control
    With its Picomag flowmeter, Endress+Hauser impressed the jury of the Red Dot Design Awards to receive the Red Dot seal of quality in the product design category. The smart plug-and-play instrument scored ...
  • Flowmeter for oil and gas
    June 2018, WIKA Instruments, Flow Measurement & Control
    WIKA’s new ProPak flowmeter is a combination of proven and innovative technologies for flow profile formation. It sets new standards in terms of performance and surpasses other technologies by a long ...
  • Kobold’s flowmeters for very low flow
    June 2018, Instrotech, Flow Measurement & Control
    Kobold Instrumentation has introduced its model KSV flowmeters and switches for very low flows with and without control valves, allowing even the lowest possible liquid or gas flow rates to be measured. Specifically ...
  • Ultrasonic flowmeter for biogas
    June 2018, KROHNE, Flow Measurement & Control
    Krohne now offers the Optisonic 7300 Biogas ultrasonic flowmeter, which has been specially designed to measure dry and wet biogas with variable composition. The flowmeter provides additional functions ...
  • Wedge flowmeter
    June 2018, WIKA Instruments, Flow Measurement & Control
    The model FLC-WG wedge flowmeter consists of a pipe inside which a V-shaped wedge is fitted. Through this constriction, a differential pressure is generated which is dependent upon the volume flow. ...
  • Mini oval wheel flowmeter for tight spaces
    May 2018, Instrotech, Flow Measurement & Control
    Kobold has on offer the DOE oval wheel flowmeter for low and highly viscous liquids. Featuring a full stainless steel body, and temperature measurement for fuel consumption, the DOE offers different pulse ...
  • Emerson’s new magnetic flowmeter transmitter
    May 2018, Emerson Automation Solutions, Flow Measurement & Control
    Emerson has introduced the Rosemount 8712EM wall mount magnetic flowmeter transmitter with additional protocols, powerful diagnostic capabilities and usability features to help users in the water and ...
  • Ultrasonic flowmeter with temperature measurement
    May 2018, Endress+Hauser, Flow Measurement & Control
    Endress+Hauser’s Prosonic Flow E 100, an ultrasonic flowmeter is of high-quality industrial design, which allows reliable monitoring of industrial water, cooling water or condensate, regardless of conductivity, ...
  • Analysis portfolio for water applications
    April 2018, KROHNE, Analytical Instrumentation & Environmental Monitoring
    Since potable water has become a valuable resource, all stages of water treatment must be monitored effectively and reliably. Applications such as quality/limit value monitoring in waterworks, quality ...
  • Mass flow measurement of gases
    April 2018, Instrotech, Flow Measurement & Control
    Kobold offers the type MAS mass flowmeter that works according to the calorimetric method of measurement and was specially conceived for gas flow measurement. Since gases can be compressed, the volume ...
  • Smart plug-and-play flowmeter for utilities
    March 2018, Endress+Hauser, Flow Measurement & Control
    Endress+Hauser introduces pocket-sized flow measuring technology.

 
 
         
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