Flour miller values weighbridge technology on the island of Zanzibar
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Flour miller values weighbridge technology on the island of Zanzibar



The tropical island paradise of Zanzibar is most well known for its beaches, sea life and spice trade. Since the times of the spice trade, the port has been an integral part of the island and the ...

The tropical island paradise of Zanzibar is most well known for its beaches, sea life and spice trade. Since the times of the spice trade, the port has been an integral part of the island and the ships are still bringing in containers of cargo to the varied industries on the island.



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    Flour miller values weighbridge technology on the island of Zanzibar Flour miller values weighbridge technology on the island of Zanzibar Document Transcript

    • Digital Re-print - March | April 2014 Flour miller values weighbridge technology on the island of Zanzibar www.gfmt.co.uk Grain & Feed MillingTechnology is published six times a year by Perendale Publishers Ltd of the United Kingdom. All data is published in good faith, based on information received, and while every care is taken to prevent inaccuracies, the publishers accept no liability for any errors or omissions or for the consequences of action taken on the basis of information published. ©Copyright 2014 Perendale Publishers Ltd.All rights reserved.No part of this publication may be reproduced in any form or by any means without prior permission of the copyright owner. Printed by Perendale Publishers Ltd. ISSN: 1466-3872
    • March - April 2014 | 29GRAIN&FEED MILLING TECHNOLOGY www.gencdegirmen.com.tr F
    • T hetropicalislandparadiseofZanzibar is most well known for its beaches, sea life and spice trade. Since the times of the spice trade, the port has been an integral part of the island and the ships are still bringing in containers of cargo to the varied industries on the island. One of the largest Tanzanian companies, Bahkresa, is home on the island. Bahkresa started his flourmill many dec- ades ago and now is a major player of milling not only on Zanzibar but also on the Tanzanian mainland, in Mozambique, Burundi, Rwanda, Malawi and Kenya. Now the Bahkresa Group also produces ice cream, fizzy drinks, frozen food and many other foodstuffs. In the East African region, wheat flour production and distribution is an important addition to the crop-base rather than just maize flour and allows for more stable prices throughout the year. Reliance on a single crop has long been recognised as a key factor in famines. Moving to a wider crop base alleviates food level fluctuations that can lead to poor diet, disease and high consumer prices, especially in areas where incomes are low. It was recognised early in the 1980s that the mill would benefit from the accurate weighing of incoming grain and outgoing flour and by products. The company they went to for advise and assistance was Griffith-Elder. Now, decades on, I have been sent back to complete an upgrade to the current system. I arrive on site at the Zanzibar Milling Corporation where the mill is tripling its capacity by fitting new silos. Discussions with Mr Yussuf, the man- ager, immediately followed and covered the upgrading of the existing weighbridge, over a cup of chai. He was very happy to see me, the shipment of grain is due next week and he needs his digital recording system installed by then. Tripling capacity means tripling weighing Tripling the capacity will mean tripling of the number of vehicles to be weighed. That in turn means a requirement to digitize weighing records for speed of ticketing and control of stocktaking. Every second costs when there is a container of wheat to offload from the port. Together we go to inspect the weigh- bridge. I find one of our 15m weighbridges with analogue S-Type load cells. It has been nearly 25 years since the initial installation and the platform has no signs of rust or damage despite having had sea air blow over it for all this time. The weighbridge has S-Type load cells giving it excellent stability. The weighbridge doesn’t wobble when the trucks enter the weighbridge, like canister load cells, giving quick steady weights. This is exactly what is needed in high volume traffic situations. There is no requirement for the precise leveling and grouting as with canister load cells making installation and maintenance simple and easy: A great advantage for a site is off the beaten track. Site staff can be easily trained meaning no expensive service contracts are needed. Predating the ubiquitous PC Inside the office there is the sturdy 80s indicator with a built in tally roll printer and a small LCD display. Speaking with Mohammed, the weigh- bridge team leader, I find out that they have been very happy with the indicator and say that it is very reliable and strong. However, for this indicator, its years of reliable service are now over. Now out-of-date, as it predates the ubiq- uitous PC and electronic reporting which is now preferable to keeping paper records. I add a Weightel™ in between the ana- logue load cells and the new indicator, this digitizes the analogue load cell signals. The new indicator processes the digital load cell signal and stores the weight along with the date, time and a record number. Flour miller values weighbridge technology on the island of Zanzibar by Tim Harford-Cross Overseas Project Engineer, Griffith Elder Tontel Software has fully customisable ticketing and reporting functionality 26 | March - April 2014 GRAIN&FEED MILLING TECHNOLOGYF
    • March - April 2014 | 27GRAIN&FEED MILLING TECHNOLOGY Grain cooling GRANIFRIGOR™ The most natural way of grain preservation: • Protection against insects and microbes • Without chemical treatment • Short amortisation period • Low energy costs • Independent of ambient weather conditions F r i g o r T e c G m b H • H u m m e l a u 1 • 8 8 2 7 9 A m t z e l l / G e r m a n y Phone: +49 7520/91482-0 • Fax: +49 7520/91482-22 • E-Mail: info@frigortec.de w w w. f r i g o r t e c . c o m F
    • The indicator can be linked to large LED external displays, traffic lights and printer to stand alone from a PC. A button fob system allows the whole system to be driver operated with preloaded tare weights stored on each fob. The whole system can be run off-grid using 12V solar panels or a battery: Excellent for use in countries where black- outs are common place or where 24-hour service is required. The units can be set to imperial - such as pounds and tons - or metric units, such as kilograms or tonnes. The important functionality at ZMC is the communication with a computer. The new PC is installed with Tontel™ Grain Storage Software and communicates directly with the indicator. The software allows for stock control giving quantities of stock in each store as well creating tickets for each truck and a powerful reporting utility. Ticketing The ticket includes gross weight, tare weight and nett weight. Tare weights can be set to enter auto- matically from a database relating to a given licence plate number. Alternatively, the trucks can be weighed twice when empty and full, during filling/ dropping off the ticket is held in the system until the operator recalls the ticket for the second weighing allowing more trucks to be weighed in the meantime. Adjustments can be made for the mois- ture content of the grain allowing the wet weight (current weight) and the weight after drying to be calculated. The user friendly interface allows the operator to define what information is included on the ticket. Usual items include goods, transporter, customer name, etc but also could be site specific info such as labora- tory or test sample results. Reporting systems The software has an in-built reporting utility that allows a reports for each store, truck or over any date range and for any item on the ticket. For instance it is possible to generate a report for trucks coming from “Silo A” between “1 March and 1 April” but also to then further specialise the report by select- ing only records where customer is ‘The Big Flour Distributor Co’ for example. You can also choose which data is then displayed in the report. The report data is output to a CSV file that is accessible in spreadsheet software directly and is able to imported to many other software programs. Sharing the weighbridge The weighbridge at the Zanzibar Milling Corporation is used by many other com- panies from the island as this is the only place they can find accurate weights for their trucks. More advanced software is available where full costing options can be calculated for storage, weighing and grain handling. Laboratory, screening and admixture data and test data can be input on the tickets such as mycotoxins: Ideal for large sites with laboratory capabilities. I go through all the software options and functionality with Mohammed and tomor- row I will return to oversee the operation of the weighbridge by the staff. At Griffith Elder we find it is essential to spend enough time as is necessary with operators on the ground to ensure that they fully understand the process and can utilise the software to the maximum. After my upgrade to the system, Mohammed takes me on a tour the mill and meet the team building the silos. The Zanzibar Milling Corporation under- stands the essential requirement to weigh the product at each stage of production. Not only for optimisation of the produc- tion procedure but also to calculate profit margins accurately. Theft is not a problem on site as every kilo of grain and flour is accounted for at each stage. The most important of these stages is when interacting with other companies and this is done over the weighbridge. Leaving site, the operators are very happy to be able to print tickets rather than write them out manually and the manager is very happy with having all their reports stored in spreadsheets that he can integrate with his mill and financial auditing software. Now I have a chance to find some turtles! Full portability is available with PC, Printer and Indicator housed in a Winchester carry case and no floor bolts for our load cells The original sturdy 1980s indicator with a small LCD display is still working and remains reliable Mohammed points to the new system that brings him significant advantages in ticketing and reporting GRAIN&FEED MILLING TECHNOLOGY28 | March - April 2014 F
    • Innovations for a better world. Strong partner in Grain Management. One of the big challenges of our age is to supply all the people worldwide with food. Every year, millions of tons of grain are collected, stored, and handled around the globe – and the upward trend is unbroken. Only the most up-to-date plant and equipment can guarantee rapidity and quality while minimizing raw material losses. In order to meet the increasingly stringent challenges, Bühler Grain Logistics provides with its capabilities the best possible solution – for conveying, clean- ing, drying, storing, dedusting or loading and unloading the most important commodity on earth. www.buhlergroup.com
    • www.gfmt.co.uk LINKS • See the full issue • Visit the GFMT website • Contact the GFMT Team • Subscribe to GFMT A subscription magazine for the global flour & feed milling industries - first published in 1891 INCORPORATING PORTS, DISTRIBUTION AND FORMULATION In this issue: • Researching and reporting: the roller flour milling revolution • What is Fumigation? A technique of pest control using a toxic gas • VIV Europe preview Our pull out centre section March-April2014 • Bread is the foundation of civilization • Conserving grains: through drying • Flour miller values weighbridge technology on the island of Zanzibar first published in 1891 This digital Re-print is part of the March | April 2014 edition of Grain & Feed Milling Technology magazine. Content from the magazine is available to view free-of-charge, both as a full online magazine on our website, and as an archive of individual features on the docstoc website. Please click here to view our other publications on www.docstoc.com. To purchase a paper copy of the magazine, or to subscribe to the paper edi- tion please contact our Circulation and Subscriptions Manager on the link adove. INFORMATION FOR ADVERTISERS - CLICK HERE Article reprints All Grain & Feed Milling Tecchnology feature articles can be re-printed as a 4 or 8 page booklets (these have been used as point of sale materials, promotional materials for shows and exhibitions etc). If you are interested in getting this article re-printed please contact the GFMT team for more informa- tion on - Tel: +44 1242 267707 - Email: jamest@gfmt.co.uk or visit www.gfmt.co.uk/reprints