Water / Wastewater 47 Highly reliable SIL-2 fl ow switch protects pricey pumps from dry running conditions


New pumps are expensive, which is why engineers will appreciate how the FLT93 Series Flow Switch from Fluid Components International (FCI) provides a reliable early warning alert to dry running conditions, cavitation, and other issues that can lead to emergency shutdowns, service interruptions and unplanned costly maintenance.


Demanding process industries, such as chemical, electric power generation, food/beverage, oil/gas, petrochemicals and water/wastewater treatment plants, depend on pumps to move process fl uids and keep cooling systems up and running. Pumps are expensive to operate and costly to maintain – especially when dry running conditions suddenly occur due to system variable demand, leaks, clogs or other problems that could affect a pump’s seals or bearings. The resulting damage can require expensive, time-consuming repairs, overhauls, or replacement at an even higher cost.


The dual alarm FCI FLT93 Series Flow Switch reliably monitors the fl ow and temperature of liquids, gases, slurries and more. It is ideal for pump wet/dry detection, where sudden, unexpected reductions in media fl ow rates can leave pumps vulnerable to over-heating conditions that shut down process lines and require troubleshooting, fi xes and more. This SIL-2-rated instrument is designed for heavy-duty, hazardous process industry environments and comes with a comprehensive list of global safety approvals.


With its no moving parts design, the FLT93 Switch offers a highly robust scheme for pump protection with its dual alarm capability. With Alarm 1, the switch will detect a low fl ow situation anywhere between 0.01 feet to 3 feet per second FPS [0,003 meters to 0,9 meters per second MPS]. This low-fl ow alarm can be regarded as a pre-warning signal for the control system or operator. The system or operator can then decide to keep the pump running or to shut it down.


If an Alarm 2 occurs because the feed line to the pump is running dry, this condition would be an emergency signal to shut down the pump immediately because the bearings now see gas instead of a liquid as a heat transfer media. In such situations, the temperature of the bearings may rise very fast. Using a fl ow switch prevents permanent damage to the pump’s bearings that will require an overhaul of the pump before more damage occurs.


The sophisticated FLT93 switch is a dual- function instrument that indicates both fl ow and temperature and/or level sensing in a single device. Dual 6A relay outputs are standard and are assignable to fl ow, level or temperature. The FLT93 switch can be specifi ed in either insertion or in-line styles for pipe or tube installation.


Designed for demanding heavy-duty processes, FLT93 switch is hydrostatically proof pressure tested to 3500 psig [240 bar(g)] at 70°F [21°C]. De-rated with temperature, the maximum operation service recommended is 2350 psig [162 bar(g)] at 500°F [260°C]. Higher ratings are available with special construction and test certifi cation. Agency approvals on the full instrument include FM, FMc, ATEX, IECEx, UKCA, CSA, CRN, and CE.


Highly dependable, FCI’s versatile FLT93 switches are ideal for applications in many demanding hazardous process industries. They are also used extensively with or without SIL2 certifi cation in a wide variety of applications.


FCI is the only thermal manufacturer providing built-in temperature compensation to ensure set point accuracy for process temperatures that vary up to ±100°F. The FLT93 is easily fi eld-confi gured, providing unparalleled fl exibility, accuracy and stability for all multiple process sensing and switching requirements.


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Meteor integrates AI with remote cameras to optimise fl ood network effi ciency


The management of fl ood defence networks is being revolutionised through a combination of MRC remote cameras and AI (Artifi cial Intelligence) systems developed by Meteor Communications. This new advanced technology is already providing Water Utilities, UK Government Agencies and Local Authorities with early warning of issues within their networks, enabling targeted, appropriate responses to events as they emerge.


With 1000’s of cameras in service monitoring a wide variety of network assets such as trash screens, CSO’s, overspill channels and EDM monitors, Meteor already has operational networks of cameras providing robust, reliable, real-time image feeds from remote assets. Stakeholders such as control rooms, operators and fl ood defence teams utilise the MeteorCloud® secure web portal to view images, remotely request new images and receive alerts for potential issues.


Over the past 3 years Meteor has been leveraging the MRC camera and Meteor Data Cloud capabilities to develop Deep Learning Neural Network technologies to identify network issues, caused by issues such as blockages, high water levels or other unforeseen factors.


Taking the example of trash screens, Meteor AI has been site tested in all seasons, and found to be over 94% effective at identifying potential screen blockages and issuing automated alerts. This enhanced capability will allow users such as the Environment Agency to target resources to sites with potential issues at an early stage, and thereby enable operational effi ciencies. The severity of fl ood events will also be reduced because users will be able to proactively respond to issues more quickly, rather than to fl ood events caused by blockages in drain networks.


During the recent storm Ciarán the Meteor Data Centre (MDC) processed over 500,000 real-time images over a 3-day period with peak MeteorCloud user sessions of nearly 5x usual levels. This presented an excellent real life test of the type of events for which the MDC was designed, and proved the robust, scalable nature of the platform.


With the effects of climate change and more adverse weather conditions Meteor Communications is developing the technologies required to effectively monitor and react to situations as they arise. This enables effi cient use of resources and saves carbon through a reduction of unnecessary site visits.


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