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Performance Enhancements for Mass Flow Controllers

April 25, 2013

Performance Enhancements for Mass Flow Controllers

Derby, UK (rushPRnews) 04/25/13 — Digital Mass Flow Controllers (MFC’s), as typically used in the semiconductor, chemical processing, food and pharmaceutical industries, are designed to both measure and control the flow of various gases and liquids. Applications also occur where MFC’s are used in analytical laboratories for High Pressure Liquid Chromatography. In many applications the gases and fluids are operating at modest temperatures up to 80°C, but can include aggressive media flows which necessitate the use of specialised chemical-resistant elastomer seals.

Most gas flow meters are equipped with seals made of DuPont™ Viton® fluoroelastomer. However MFC’s need O-ring seals and other custom parts that do not swell in the presence of more aggressive chemicals utilised within their wide range of industrial applications. The sealing specialist Dichtomatik Ltd, is an authorised distributor for the DuPont™ Kalrez® range of sealing products, designed to give extended performance when operating with the widest range of chemicals, even incorporating elevated temperature conditions. Tests undertaken with an MFC, fitted with DuPont™ Kalrez® Spectrum™ 6375 O-rings and custom parts, increased reliability of operation and the overall Meantime Between Failures (MTBF) of the equipment.                                               

Performance Enhancements for Mass Flow Controllers

This increased reliability ensured a competitive advantage for the MFC manufacturer and a commercial advantage for the equipment user, as it reduced production down-times. A logistics saving was also achieved as the standardisation on Kalrez® parts for all the site modules led to a reduction in the worldwide inventory of different elastomer seals types for the company. A typical selection of specialised Kalrez® Spectrum™ seals and their particular qualities are detailed, offering minimal swell in various liquids, together with extended lifetime and performance characteristics:

Ref 6375 -    for broadest chemical resistance

Ref 7075 -    for highest service temperature (up to 327°C) and lowest compression set

Ref 7090 -    for high hardness/higher module properties

Ref 3018 -    general use in the chemical process and oil exploration industries

Ref 8085 -     excellent mechanical strength, very low particle generation and longer seal life

Ref 9100 -    for PECVD and HDPCVD processes, offering thermal stability, low erosion, good mechanical strength and excellent elastic recovery

Ref 6230 -    superior chemical resistance and low contamination from extractables where FDA compliance is required


Further information is available from:

Dichtomatik Ltd, Donington House, Riverside Road, Pride Park, Derby DE24 8HX

Media Contact Name: Dean Spencer
Media Phone: 01332 253840
Media Web Address: http://www.grapevine-group.co.uk
Company Contact Name: Nick Taylor
Company Phone: 01332 524401
Company Web Address: http://www.dichtomatik-kalrez.co.uk
Click here to see all news from this author/company

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