Welcome to the March 2014 issue
of fLowdown - a new quarterly Newsletter from
Titan Enterprises Ltd. written to keep you
informed about the latest technological developments, applications advances and
breaking news in the field of flow measurement.

If a particular feature interests you do not hesitate to contact us or follow the link for further information. We welcome your feedback.

Trevor Forster (Managing Director)

 

Trevor's
Technical Tip

Trevor Forster is Managing Director of Titan Enterpises. His experience in fluid handling dates back to the mid 1960's when he started working on rotating seals and flowmeter design for third party clients. Drawing upon over 40 years of using innovative design and production techniques to produce elegant flow metering solutions for organisations around the globe, in this feature - Trevor offers you a useful technical tip.

Consider the total life cost of your flow meter.

Initial purchase price is only one aspect of the costs of running a flowmeter. A simple turbine will be inexpensive to purchase and install but the true costs may need to be considered over several years of operation. How often will your production line have to be down while that simple turbine is being re-calibrated? It may well be that a non-intrusive solid state flow meter will be more cost effective in the long term despite the initial financial outlay. In situations where a consumer product, with a design life of only a few thousand hours, incorporates a flowmeter - a more inexpensive device would be appropriate. It is important to remember that flowmeter selection is part of your overall project design and costing.


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New Products

Inert Low Cost Flow Meter for OEM Applications


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Titan Enterprises has introduced its third generation 800 Series flow meter range. The new 800 Series flow meters incorporate a wide range of developments further enhancing long-term, high performance operation for OEM customers in drink dispensing, laboratory testing, cooling, pharmaceutical, medical and semiconductor applications.


Expanding Range of Ultrasonic Flowmeters


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The Atrato ultrasonic flowmeter from Titan Enterprises is a true inline non-invasive flow meter without the contorted flow path and disadvantages of alternative designs. It can handle flows from laminar to turbulent and is therefore largely immune from viscosity. It also offers excellent turndown, linearity and repeatability. Now available in 60°C and 110°C temperature versions and a 30 bar higher pressure model - Atrato flowmeters use patented 'time-of-flight' ultrasonic technology that enables operation over very wide flow ranges (250:1) with excellent accuracy (better than ±1.0% of reading).


Installation Insights

How often have you purchased a flow meter that seems perfect for your application only to be disillusioned by unclear or over complex installation procedures. In this issue of fLowdown - Titan Enterprises offers an informed insight on why you must carefully follow manufacturers installation pipework recommendations.

As a general rule if your flowmeter is a velocity measuring device it will require straight lengths of pipe both upstream and downstream. There are however a few exceptions:- Positive displacement meters, low flow Pelton wheel turbines, the Atrato ultrasonic meter from Titan and some Coriolis meters. All of these flowmeter designs are more tolerant of upstream flow disturbances. In addition traditional turbines, pitot tubes, orifice plates, electromagnetic meters and vortex shedding meters are all likely to give erroneous readings if the manufacturers installation pipe work recommendations are not strictly adhered to.

Disturbances can be caused by pipework changes as mundane as adding in an elbow joint or an angled shut-off valve. A pair of slow bends at ninety degrees to each other can introduce enough turbulence to slow down and possibly even reverse an axial turbine meter. So take care in carefully following the pipework instructions you are given to ensure optimal results.


Bulletin Board

To enable you to make informed decisions about the flow metering challenges facing your organisation this regular newsletter feature keeps you up-to-date on the latest literature, web, video and social media initiatives from Titan Enterprises.


Titan Enterprises has launched a web log (blog) aimed at providing an informal communication channel with people involved or interested in flow measurement. To view recent blogs or to join the Titan community please visit www.flowmeters.co.uk/flowmeters-newsblog/


Titan Enterprises is to launch a 2014 range catalogue detailing its comprehensive selection of off-the-shelf flowmeters - to pre-order a copy visit www.flowmeters.co.uk/2014-catalogue-form.php.


The Atrato ultrasonic flow meter is the culmination of a research and development project in conjunction with the world renowned Department of Process Engineering at Cranfield University, UK. Using patented technology that enables it to operate with excellent accuracy over very wide flow ranges, the Atrato range is a genuine breakthrough in inline flowmeter technology. To view the Atrato ultrasonic flow meter video visit
www.atratoflowmeters.com.


Off-the-wall-humour

A physicist, a biologist and a mathematician sit in a sidewalk cafe, looking at the building across the road. Two people go into the building, then three people come out.
Physicist: "This must be a measuring error!"
Biologist: "This is proof of procreation!"
Mathematician: "If one more person goes into the building, it will be empty!"

How do I measure

In this newsletter feature we bring you some of the more interesting and topical application challenges posed to Titan Enterprises and the solution we provided. Don't hesitate to send your flow metering application requirements to dee@flowmeters.co.uk to see how we can help you.

Q1: We are an international manufacturer of confectionery products - how can we meter our liquid chocolate?

A1: Liquid chocolate is really quite easy to meter providing it is kept in a liquid form. This usually involves heating the pipe work and any fittings. A few systems can be used to keep the chocolate liquid - the simplest solution is probably to use self heating tape. This tape contains a resistive wire whose resistance changes in temperature making it self regulating. As the wire heats up the resistance increases until it reaches its operating temperature. A suitable standard flowmeter could be wrapped with such a wire so that the fluid inside remains liquid. Another way of maintaining the chocolate in its liquid form is to build a secondary chamber all around the flow meter through which you pass a pre-heated circulating fluid. Titan have made several jacketed meters of this type with a pair of secondary process connections for the circulating steam.



Q2: We are a medical products producer wanting to meter the production of a blood substitute.

A2: For this demanding application the meter had to have a minimum pressure drop to ensure that the measurement did not disrupt the system flow. In addition the flow meter should not introduce high shear forces within the blood substitute which might lead to degradation of the product. We recommended our Atrato ultrasonic flowmeter as the 6mm meter bore exactly matched the customers blood substitute production pipe bore. Having no moving parts the Atrato flow meter does not react with the liquid in any way thereby maintaining the integrity of the blood substitute product.



Q3: Our manufacturing process involves 25% caustic soda - what type of flowmeter can deliver the durability, long term reliability and measurement precision we need?

A3: High pH fluids present unusual flow metering challenges. Generally such fluids are incompatible with metals and polymers. So, whilst these are the most popular flowmeter construction materials, their use can present interesting mechanical considerations. For instance is the polymer strong enough to withstand the pressure and temperature requirements? Does the meter maintain its accuracy over the whole operational envelope? Titan has developed several possible solutions to the metering high pH fluids. For applications requiring just moderate accuracy the Titan 800 series flow meters, which are manufactured in polypropylene with encapsulated magnets, will measure high pH fluid flows from 0.05 to 15 L/min with an accuracy of ±1.5% FSD. If greater accuracy is required the totally non-metallic construction of the Titan Atrato flowmeter will measure high pH fluid flows with a 200:1 turndown within ±1.0% of reading.

Flow Technology Spotlight

In Flow Technology Spotlight we review a particular flow metering technique, its benefits, shortfalls and the applications to which it is best suited. Our topic for March 2014 is:

An Optimised Technique for Low Flow Measurement

There is an increasing demand for the improved measurement of low flow rates of liquids in the food, beverage, pharmaceutical, laboratory, medical and industrial sectors.

The measurement of low flow rates is difficult for a number of reasons. With

mechanical meters all the moving parts must move with virtually no friction or the linearity of the meter will be poor. In addition the bearings must be high quality or they could be contaminated by the fluid.

Typically low flow applications require flowmeters that can operate over a wide range of flows, providing a linear performance independent of the Reynold’s Number and with a meter construction which is clean bore such that the meter can be cleaned by the passage through the meter of the fluid being monitored.

To read this paper in full – please visit www.atratoflowmeters.com/atrato-paper-ultrasonic-flowmeters-1/

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Titan Enterprises Ltd, Unit 2, 5A Cold Harbour Business Park, Sherborne, Dorset, DT9 4JW
Telephone: +44 (0)1935 812790 - Fax: +44 (0)1935 812890 - Email: sales@flowmeters.co.uk