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Brewing, Drink and Dairy Processing News
News Release from: Vishay Nobel | Subject: Klay 2000SAN 'Smart' pressure transmitter
Edited by the Processingtalk Editorial
Team on 30 July 2003
Replacing old technology minimises
product loss
Engineers at Muller Dairy decided they needed to replace old technology pressure transmitters with accurate and hygienic pressure transmitters that would withstand an aggressive environment
When engineers at Muller Dairy in Market Drayton, Shropshire decided they needed to replace old technology pressure transmitters with accurate and hygienic pressure transmitters that would withstand an aggressive environment which included a steam/caustic/acid environment, they undertook a thorough and comprehensive review of the marketplace The result of this was that the Klay products from Vishay Nobel appeared to have the design of transmitter suitable for their requirements
This article was originally published on Processingtalk on 17 Mar 2003 at 8.00am (UK)
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This was confirmed by a short trial of the 2000SAN 'Smart' pressure transmitter.
All the engineers liked the format of the programming as well as the transmitter appearance.
The aim at Muller Dairy is to produce the best quality for the consumer, whilst maintaining a very high standard of efficiency - inaccuracy can mean product losses and a possibility of spoilt product.
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The Klay series 2000 is a complete range of 'Smart' microprocessor-based all-stainless pressure and level transmitters with the 2000SAN being designed for use in the food, beverage, chemical, and pharmaceutical industries.
It has an IP66 rating, is fully temperature compensated and has a very strong flush mounted hygienic diaphragm.
Output is 4-20 mA or digital with Hart protocol.
It also has EMI/RFI CE certification with options that include CENELEC certified intrinsically safe use in hazardous areas.
These pressure transmitters are used to calculate levels and pressures within the yoghurt vessels.
There are two transmitters fitted on each vessel, one top and bottom and the two outputs are fed to the Muller PLC control system to record the vessel main pressure and the differential (which is proportional to the level of product).
The vessels have to maintain a precise pressure above atmosphere with the correct product levels reported accurately at all times.
It is also vital that the tanks are sterilised periodically and the sterility maintained after cool down with sterile over pressured air.
The levels of the CIP (Clean in Place) medium have to be controlled during the cleaning process and control of the steam sterilisation process of the vessel has to be maintained.
Temperatures during sterilisation reach in excess of 100 degrees and the 2000SAN pressure transmitters have to withstand this and still record the pressures accurately.
Commenting on the results and benefits resulting from this engineering work, Mr Steve Ruscoe, Process and Services Engineering Manager at Muller Dairy said "To date, after the short period of installation, product loss to effluent has been reduced.
Also, no transmitters have failed so far, unlike previous units". Request a free brochure from Vishay Nobel ...
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