Power Generation Providing cost effective instrumentation solutions Product Focus Multi Stage Restriction Orifice Plates Rototherm Online All change on the web Application Focus Sentinel Dairy pasteuriser product application ........................................... ........................................... in focus British Rototherm News Update | Q4/2011
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Power GenerationProviding cost effective instrumentation solutions
FLASHING is a similar phenomenon to cavitation except that the process pressure never recovers sufficiently to collapse the gas bubbles resulting in two phase flow - liquid and gas - downstream of the orifice. Erosion of pipe work and valves and other instrumentation can occur due to the impact of liquid droplets carried at high speed in the vapour flow.
CHOKED FLOW IN GASES – also know as critical flow – occurs when too large a pressure drop is attempted across a single ori-fice plate. When the downstream pressure is less than 52.8% of the upstream pressure, the flow through the orifice will become sonic, at which point no further increase in flow can
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be achieved by either increasing the upstream pressure or lowering the downstream pressure. A Multistage Restric-tion Orifice assembly will enable staged reductions in pressure to prevent choked flow occurring.
Rototherm Multistage Restriction Orifice Plates are manufac-tured from a wide range of materials and are engineered to meet specific project process conditions and requirements. Plates are usually welded into pipe with a separation of one pipe diameter, the number of plates and orifice bores being determined by calculation.
Process connections to existing pipe work can be either stand-ard process flanges or machined ends suitable for butt weld-ing.
As well as multistage assemblies - Rototherm manufacture a wide range of standard plate orifice plates - ‘concentric square edged’ for general application, ‘conical entrance’ or ‘quarter circle’ for low Reynolds number flows, and ‘segmental’ or ‘ec-centric’ for flows containing light solids and slurries.
Click on the icon below to access more information on the Rototherm range of primary flow elements including multi- stage orifice plate assemblies
All websites in the Rototherm group are getting a design make-over
with all content being updated with the latest news and informa-
tion. The first site to get a all new look is that of RTD-Products - the
UK’s leading manufacturer of platinum resistance temperature de-
tectors.
Over the coming months - the RTD site will be available in French,
German and Spanish languages. An e-commerce site is also planned
to be in place early in 2012.
New Rototherm Website
Set to launch fully in early 2012, the rototherm.co.uk site will com-
bine a new look with a wealth of new and updated technical infor-
mation ensuring the most up to date information on our products
is available 24/7.
Rototherm E-Commerce Site
In an exciting development British Rototherm has launched its first
e-commerce site - Rototherm Online.
Initially available to UK customers only, the site offers a wide range
of Rototherm products, available on fast delivery times, as well as
representing a considerable price saving on standard list prices.
The objective of the site is to give our UK customers a faster, more
economical way of buying their product - 24 hours a day, 7 days a
week.
Products featured on the Rototherm Online web site include:
• Chart Paper
• Disposable fibre tipped pens for all Rototherm Chart Recorders
• Chart Drive Motors
• Stainless steel pressure gauges - available in a wide range of dial
sizes, process connections and pressure ranges
• Sentinel Chart Recorders
• Aircraft Tyre Pressure Gauges
• Pressure Gauge Accessories
New products to be added to the site in the coming months will
include:
• Orifice Plates
• Thermowells
• Temperature Assemblies
• Temperature Transmitters
Payment can be made via the Secure server by all major credit and
debit cards and all stock items are despatched with 2 working days
for fast delivery.
A sneak preview of the new Rototherm site - www.rototherm.co.uk
The new RTD products website - www.rtd-products.co.uk
in focus
Since Rototherm manufactured the first bimetallic back in 1934, Rototherm products have been widely used by dairy farmers and producers across the world.
Ideal for food and dairy process applications, our high quality instruments are regarded as the most reliable and accurate to be found anywhere.
Included in the dairy range is the dedicated Sentinel Pasteur-ising Recorder Controller. The 3 pen format allows recording of HOT and COLD product temperatures, plus an EVENT PEN which records Divert Valve position on any portion of the chart. Recording using “dual-zone” or “half-chart” format is easily set-up, and event pen step sizes are easily adjusted to suit any user.
DIVERT CONTROL is a standard feature with accurate, reliable switching via a 6 amp output relay. An additional DIVERT PRO-TECT facility allows over temperature trip-out if the sensor fails.
An advanced BACK-LIT DISPLAY offers the user a UNIQUE in-dication of the pasteuriser status during operation. The HOT and COLD values are continuously indicated on the top display line, whilst “FORWARD”, “DIVERT”, “AUTO” or “MANUAL” are shown on the bottom display line, and continuously updated as the status changes.
Sentinel:Dairy pasteuriser product application
Application Focus
Control/Alarm SET POINTS are easily displayed at the touch of a button and the status of output relays is continually indicated by colour-coded LED’s.
Three selectable levels of SECURITY, including password and hardware locks are available to stop unauthorised access and alteration of the instrument.
Housed in a STRONG steel case, which can be wall, panel or pipe mounted, the Sentinel is designed for rugged environ-ments.
A gasketed lockable door with tough acrylic window protects the internal components to IP65. The slim case is ideal for shal-low compartments, and will RETROFIT in place of Rototherm, Negretti, Honeywell, ABB Kent-Taylor, Chessel or Foxboro mod-els.
The Sentinel is SIMPLE TO OPERATE. Sensor type, chart range, display units, chart speed and relay actions are easily and quickly modified if needed. The Sentinel SEN 30P can be sup-plied fully set-up to suit individual customer requirements and makes full use of the EXTENSIVE list of pre-printed pasteurising charts in the Rototherm range.
Standard version Sentinel Chart recorders are now available to buy
Rototherm’s Global site www.rototherm.co.ukRototherm’s E-commerce site www.rototherm-online.co.ukRTD Products www.rtd-products.co.ukBentley Instruments www.benetly-instruments.comBentley Instruments E-commerce site www.bentley-online.ie
Rototherm worldwideRototherm customers are served by a Global Distributor Network, and by worldwide offices and distribution facilities staffed by dedi-cated teams of experts.
Covering all continents, Rototherm distributors can be relied upon for technical support and service.
For details of your nearest Rototherm distributor or stockist - please contact us.
For over seventy five years, throughout the world, British Rototherm equipment has been installed wherever reliability and long lasting performance is demanded. One of the world’s leading manufacturer of industrial instrumenta-tion, British Rototherm products are manufactured in its modern factory located in the South Wales region of the United Kingdom. Sited on 6 acres of land at Kenfig Industrial Estate, the company op-erates from a 60,000 square feet (5,574m square metre) factory. Working closely with our customers around the world, Rototherm has developed products for use in a variety of different industrial applications.
As well as offering a world class product, Rototherm provides its cus-tomers with a level of service and support that is second to none. With a firm understanding of our customer technical requirements, we are able to offer a products that will be right first time, every time. With competitive prices, short delivery times and an commitment to quality that goes beyond the expectations of our customers, Roto-therm must be the supplier of choice for all of your industrial instru-mentation needs.
Over seventy five years of manufacturingexperience
British Rototherm has accreditation to the latest ISO standard ISO9001:2008