Landia has installed its 3,500th submersible flowmaker for use in homogenizing settled sewage and returning activated sludge in the anoxic treatment of wastewater during denitrification.

Landia has completed the installation of its 3,500th submersible flowmaker for use in homogenizing settled sewage and returning activated sludge in the anoxic treatment of wastewater during denitrification. At this secondary treatment stage, typically part of a step-feed activated sludge process, the flow of mixed liquors passes through each of the anoxic zones where additional settled wastewater is added and the contents of each zone are mixed using Landia submersible flowmakers. Aimed at helping lower total nitrogen content, the Landia flowmakers successfully provide anoxic mixing without surface air drag down.

Successfully preventing biomass from settling, the Landia flowmakers give a soft treatment of the effluent, in order to optimise the biological process.

With a propeller rotation of 150 rpm, the flowmakers are equipped with large surface propeller blades, ideally suited for this requirement of mild treatment of activated sludge.

Centriquip is looking to build long-term business relationships with companies in China to launch its new range of environmental decanter centrifuges to the Waste Water and Sewage industries.

Centriquip, a UK based company, is looking to build long-term business relationships with companies in China to launch its new range of environmental decanter centrifuges to the Chinese waste water and sewage industries. The range includes its new CQ7000 high-volume decanter designed specifically for the sector. Potential partners are likely already to be providing goods and services to this important market sector.

Decanter centrifuges separate solids from liquid and are, therefore, essential equipment for all sewage treatment and industrial waste water applications.

Removing solids allows the water stream to be returned to the head of the works for re-use; the 'dry' solid phase remains easily disposable by incineration or, after liming, for spreading on the land as fertiliser.

The typical throughput of large decanters is in the region of 80m3/hour of feed material for dewatering, higher for thickening operations.

Large plants use multiple machines to provide the total throughput required and the necessary operational continuity.

Centriquip is the UK's largest manufacturer of decanter centrifuges and already supplies the largest municipal sewage treatment and industrial waste water plants in Europe.

Excellent technical support, maintenance and repair services are available.

The company has already begun to operate in China with a recent order to supply a waste water treatment plant for a sugar factory in Jinghong, Yunan Province.

In addition to its range of decanter centrifuges Centriquip also supplies rotary drum thickeners, sand filters, carbon odour filters and high-speed vertical bowl centrifuges.

This provides the waste water and sewage sector with a complete range of sludge treatment equipment from a single source.

A waste management company has made dramatic savings in its sludge disposal costs by installing a CQ 3000 centrifuge supplied by Derbyshire manufacturer Centriquip.

A waste management company has made dramatic savings in its sludge disposal costs by installing a CQ 3000 centrifuge supplied by Derbyshire manufacturer Centriquip. Dorset-based, IPPC specialises in the treatment of hazardous industrial waste including sludges, water/oil mixtures, soluble oils and waste oil. Before the centrifuge was introduced, sludge produced during processing had to be transported by road to a plant in the Midlands for safe disposal: a costly operation that was quickly becoming unsustainable.

'The cost of handling and transporting sludge hundreds of miles was becoming a major problem and we needed to come up with a way of processing more of it on-site'.

said Oil and Water director Stewart Silvey.

'We approached several companies for help, but Centriquip was the only one that showed real commitment to solving our waste problem.

They provided test equipment and people to help us find the most practical solution.

All the other systems we looked at were more complex and not as cost effective,' continued Stewart.

The centrifuge enables the liquids in the sludge to be extracted for further on-site processing, including the retrieval of oils for recycling.

The solids are formed into 'cake', which can be disposed of via landfill or incineration.

Often the solids can be reclassified as non-hazardous, which further reduces the cost of disposal.

An overall reduction of around 75% has been achieved in the volume of waste material leaving the site.

Oil and Water developed the centrifuge system to be portable so it could assist their Industrial Services Division for on-site treatment.

Centriquip manufactures a wide range of dewatering and thickening equipment, primarily for handling wastewater.

The company also has the ability to service and repair any make of decanter centrifuge, often with a much faster turnaround than the original manufacturer.

The Bronkhorst recalibration and repair service provides traceable calibration for all its own equipment, plus mass flow controllers manufactured by Porter Instrument USA or Oval Corp of Japan.

Recalibration and repair for flow controllers Bronkhorst's recalibration and repair service provides traceable calibration for all its equipment including mass flow controllers manufactured by Porter Instrument USA or Oval Techno Corp of Japan. Bronkhorst UK is a wholly owned subsidiary of Bronkhorst High-Tech of Holland. Established in 1981, Bronkhorst BV was formed by two engineers with novel ideas for gas mass flow control products using thermal techniques.

Initially targeted at the market for control of gas flows within semiconductor manufacturing machinery, joint technology agreements were signed between Bronkhorst High-Tech and Porter Instrument Company for the North American market and Oval Corporation for the Asian markets, to provide worldwide customer support across similar product ranges.

The product range grew to include pressure control systems, and liquid mass flow controllers using the thermal principle.

Fieldbus-compatible sensors were introduced as early as 1992 with the RS485-based Flow-Bus, and later DeviceNet and Profibus-DP systems.

Recently Bronkhorst BV has introduced Coriolis effect mass flow measurement and controller systems for both gases and liquids.

The company is approved to ISO9001 and ISO14001, and currently employs over 200 people.

The commitment to advanced customer focused research into new techniques continues, with over 70 staff involved in R and D.

Bronkhorst UK, based near Cambridge, is staffed with a team of sales applications, product support, calibration and service engineers.

All are experienced in custom engineering of solutions to mass flow control, not only with single instruments but particularly with multi-stream instruments that minimise gas panels and eliminate inter-connecting pipework.

The application engineers cover the UK regions to promote sales of Bronkhorst Coriolis and thermal fluid measurement techniques to high technology industries, such as semiconductor manufacturing, research and laboratory applications such as chromatography and spectroscopy in particular for accurate gas blending and doping in industries as diverse as fuel cells, food, biotechnology and pharmaceuticals, fine chemicals and petrochemicals.

The Cambridge recalibration and repair service provides the traceable calibration certification regularly required for all Bronkhorst equipment including those mass flow controllers manufactured by Porter Instrument USA or Oval Techno Corp of Japan.

Furthermore, this service is not limited to only Bronkhorst product as it is extended to all makes of gas thermal mass flow controller.

Digital interfaces are now available for the EL-Flow range of thermal mass flow controllers from Bronkhorst.

These compact instruments are available for single stream or for multi-stream gas flow control in assemblies that minimise gas panels and eliminate interconnecting pipework. The EL-Flow sensor has analogue and RS232 interfaces: the digital interface PCB offers DeviceNet, Profibus-DP and Flow-Bus (RS485) protocols. EL-Flow units are used in high-tech applications such as chromatography and spectroscopy, as well as for controlling gas supplies in the food, fine chemicals and pharmaceuticals industries.

The new sales and service centre for Bronkhorst UK is based near Cambridge, providing gas mass flow application support and engineering for all industries.

A traceable flow recalibration and certification service is available for all makes of thermal mass flow meters and for the Bronkhorst range of Coriolis mass flow meters and controllers.

All units can be calibrated for the specific gas in use, via the Bronkhorst calibration programme: this system also allows for complicated gas mixtures.

Cache has been appointed UK Master Distributor for Electronic Thermal Mass Flowmeters and Control Products from E-T-A.

Cache Instrumentation of Wakefield has established a reputation for application specific instrumentation equipment solutions in many different industries over the last 10 years. Products supplied cover a wide range, from laboratory glass tube variable area flowmeters and equipment, through to micro based pressure and level transmitters for process measurement, HVAC systems or general industrial use. Geographical coverage has increased, with new sales staff and nationwide exclusive sales agreements with selected instrument manufacturers.

Recently Cache Instrumentation was appointed National Distributor for Control Products from E-T-A, which includes their sophisticated thermal mass flow measurement system for compressed air monitoring, or for other fluids.

'We value the E-T-A ultra-reliable flow meters and switches, and its level monitors, for their high quality of design and manufacture,' commented Allan Briggs, Senior Partner at Cache Instrumentation 'We are delighted that the company is backing our expansion plans, which include more field support personnel and further offices across the country'.

Jonathan Adams, MD of the E-T-A Circuit Breakers UK operation at Aylesbury, added: 'I have been particularly impressed by the application expertise and on-site support demonstrated by Cache Instrumentation.

These have been the two key factors in the E-T-A decision to appoint them as a National Control Product Distributor.'

E-T-A Circuit Breakers has obtained the very latest stringent ATEX 100a approvals for its microcontroller operated FM 1-Ex flow meter, with the digital display authorised for Zone 2 operation.

When used in conjunction with the approved E-T-A calorimetric monitoring head, the meter can be used in 'Zone 2' explosive areas to monitor and display flow rates and temperature of air, water and other media. E-T-A has obtained full approval to the latest standards as a competent manufacturer of Ex devices according to the requirements of ATEX 100a. These IEC approvals ensure the safety and free trade of Ex products for their use anywhere within the European Union.

The new approvals obtained also specifically cover the E-T-A FM 1-Ex Electronic Flow Meter and E-T-A CST-Ex Calorimetric Monitoring Head.

The complete metering combination is approved for use in Zone 2 applications provided the Ex requirements are observed.

The FM 1-Ex and CST-Ex combination will measure water flow rates from 0.05 m/s to 3 m/s, and air from 0.1 m/s up to 20 m/s.

Metering information on the FM 1-Ex is menu driven by the operation of keypads on the front of the unit.

Readout is given on a 2-line x 16 digit LCD display.

Digital readouts of actual flow rate, mass or volume flow rate and medium temperature are provided, whilst bar-graphs give an indication of flow rates, flow quantities, fluid temperature and status of the pre-set limit contacts.

Other keypad combinations provide parameter set up and fault diagnosis.

The meter features two scalable analogue outputs of flow and temperature measurement, with a choice of current or voltage output.

Signal outputs are also provided, with a choice between relays or transistors, which are manually pre-set via the keypad to switch at upper and lower limits.

Status indication is also provided separately in the case of transistorised output.

The thread-mount CST-Ex calorimetric monitoring head is connected by a lead of up to 50m.

The sensor probes are stainless steel as standard, or with Hastelloy or titanium to special order.

The head has a G1/2A threaded shank with 14mm long sensors.

Over 200,000 thermal mass flow measurement or control instruments from Brooks are installed Worldwide - in processing plants, blending control, semiconductor manufacture, laboratories and pilot plants.

Many of these processes have used the Brooks 0154 secondary electronics display and operator interface unit, to provide the operator console displaying flow values and allowing remote fine adjustment. These units allow control of up to four flow lines, using either the thermal mass flow controller or line pressure controller for gas monitoring, or Flomega thermal mass or Quantim Coriolis mass flow meters and controllers for liquid monitoring. The 0154 unit also allows blending system control functions, using the mass flow measurement on the main delivery line as the master reading, then providing the control function to drive further mass flow controllers on subsidiary slave doping lines.

The 0154 display unit has now been upgraded to accept RS232 communications connection from a PC system or laptop, allowing direct digital control and monitoring of the process lines.

This new model is compatible with all previously installed analogue mass flow measurement systems, allowing these units to be upgraded to achieve digital communication where needed.

This approach avoids the need to replace existing plant instruments with the newer versions now compatible with RS485, Profibus or DeviceNet protocols - it also avoids the need for multiple analogue to digital convertors, which was the other approach possible to achieve simple computer interfacing.

The mass flow controllers and 0154 display units are distributed by Flotech Solutions of Stockport, the Brooks exclusive sales organisation for the UK and Ireland.

The new AWM90000 offers OEMs a wider range of mass flow sensor applications, due to its much improved price/performance ratio, low power consumption and an an extremely low pressure drop.

The new AWM90000 offers OEMs a wider range of mass flow sensor applications, due to its much improved price/performance ratio. There are two AWM90000 mass flow sensor available: the +/- 200 sccm version has an extremely low pressure drop of only 0.49 mbar while the +/- 5 mbar version offers low differential pressure measurement capabilities. The very low power consumption of both versions makes the sensor eligible for battery-powered applications.

Demanding measurements can take advantage of extremely low hysteresis and repeatability error, and highly stable null and full-scale outputs.

Both its low price and the small package size allow OEMs to incorporate mass flow sensors for the first time into their application.

The AWM90000 sensors are well suited for medical applications like CPAP equipment, sleep apnea monitors, oxygen conservers and concentrators, respirators, ventilators, spirometers and anaesthesia delivery.

Industrial applications include filter control systems, fuel to air ratio sensing and spectroscopy equipment.

Important features of the new mass flow sensors AWM9000 are: Flow range of +/- 200 sccm with a pressure drop of only 0.49 mbar; Differential pressure version ranging +/- 5 mbar; Response time of only 1 ms typical; Low power consumption of 50 mW max; Very compact package design (only 30 x 28 x 13 mm); Hysteresis and repeatability error less than 0.35 percent of reading.

The new flow sensor AWM90000 from Sensortechnics opens up a new range of applications for mass flow sensors.

M+W Instruments present a new type of thermal mass flow meter and controller, based on direct flow measurement using the constant temperature anemometry (CTA) principle, using no by-pass stream.

M+W Instruments, previously known as Manger + Wittmann, was founded in 1988, as a manufacturer of equipment for thermal mass flow measurement and control. The company manufacturing and service centre is located in Garching, a town close to Munich, Southern Germany. In 1995 the company introduced a new type of thermal mass flow meter and controller onto the market, based on direct flow measurement using the constant temperature anemometry (CTA) principle.

This technique uses no form of by-pass stream, the measurements are taken from probes in the main flow line itself.

Manger + Wittmann became a member of Bronkhorst High-Tech B.V.

from Ruurlo in The Netherlands in 1997: Bronkhorst are one of the leading companies in the field of mass flow measurement and control, and saw the M+W techniques as complimentary to their own technology.

With their specialised knowledge of thermal mass flow measurement principles and production techniques the original M+W design was developed further.

Recently M+W have sold over 1,500 flow meters and controllers per annum, with a total turnover of over 1 Million Euro.

We have 6 employees in Garching, Germany and we work through 17 sales agencies all over the world.

We believe it is the skill of our employees and the flexibility of our design team that provide our competitive edge.

All our products have unique features that differentiate us from our competitors.

We are providing solutions to applications in the pharmaceutical, chemical, food and beverage, semiconductor and gas industry, supplying some large OEM customers.

For thermal mass flow measurement, advanced electronic Combimass sensors are now available exclusively in the UK from Coventry-based Gas Data.

For thermal mass flow measurement, advanced electronic Combimass sensors are now available exclusively in the UK from Coventry-based Gas Data. As part of an important new agreement between the Binder Group of Germany and Gas Data, Combimass will enable UK companies to directly and very accurately measure standard volumetric flow or the mass flow of gas. Designed with high precision resistors for minimal drift of the raw signal, Combimass sensors provide excellent long-term stability and can be supplied in multiple combinations for easy expandability of a system.

Available in several modules, including Basic (up to 130C) and Compact (up to 1100C), the modular Binder Combimass from Gas Data can work in very harsh operating conditions.

Flotech Solutions will be showing their range of flow sensors and flowmeters at MTEC 2004, including a fully working demonstration of the Brooks thermal mass flow meters and controllers.

Flotech Solutions will be showing their range of flow sensors and flowmeters at MTEC 2004, including a fully working demonstration of the Brooks thermal mass flow meters and controllers, for you to see the electronic performance against the Brooks visual, fast response, glass tube variable area flowmeters. Also on show will be a new range of open channel liquid flow sensors with improved level detection systems and software. Quantim, the most accurate low flow liquid Coriolis flowmeter/controller available today, will also be shown.

The Flotech Solutions stand at MTEC can only show a small portion of their extensive flow range, which covers most of the known measurement technologies available.