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TOP 68 Status. Reminding the Competition. E+H. Schott. Mettler-Toledo. Bad!. Bad!. VARIOPOL. SMEK. TOP 68. IP 67 tongue and groove in contact carrier PEEK PA housing 4 sealings needed. IP 68 tongue and groove in housing hydrophobic PFA PPS housing just 2 sealings. IP 67
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Reminding the Competition E+H Schott Mettler-Toledo Bad! Bad! VARIOPOL SMEK TOP 68 • IP 67 • tongue and groove in contact carrier • PEEK • PA housing • 4 sealings needed • IP 68 • tongue and groove in housing • hydrophobic PFA • PPS housing • just 2 sealings • IP 67 • tongue and groove in contact carrier • Hydrophobic PTFE • metallic housing( corrosion ) • 5 sealings needed
TOP 68 - The Present Situation E+H Schott Mettler-Toledo VARIOPOL SMEK TOP 68 Up to now the NAMUR does not prefer any of the three systems TOP68, SMEK or Variopin NAMUR would like to have a new design, based on the advantages of all the systems A working goup is founded to define and update the requirements of a universal pH connecting system
TOP 68 - GMA FA 2.62 Working Group Prof. Melzer Mr. Müller, GMA GMA Instrument Supplier Connector Suppliers Customers Mettler Toledo Knick E+H Conducta Schott Bayer Infraserv BASF Former SMEK Group Requirements Specification Group
TOP 68 - The Mettler Toledo Variopin Knick (Namur): Variopin connector is definitely a faulty design BASF, Infraserv and Bayer feel confidence about Knick statements Mettler will be thrown out of the team if they are not contributing in a positive way The Variopin connector has a big technical problem: The metallic shielding in the electrode head may have contact to the liquid In this case the measurement can be unpredictably wrong If you calibrate the electrode in the lab all seems o.k. Metallic shielding with liquid contact leads to unpredictable errors !!!
TOP 68 - Further Steps of working group 18.04.2001 Definition of the Detailed Requirements Specification 19.04.2001 - 25.05.2001 Tests of the three candidates vs. the new spec. via an independent organisation (DMT) Inspection of the design by an independent mechanical engineer 31.05.2001 Final release of the new connector system specification Definition of time schedule and further steps
TOP 68 - Conclusion The present battlefield of the connector system is the market, not the working group The winner will be the connector which is the best established in the market Sell the connector wherever possible and as often as possible mainly to pH-competitors