TOP 68 Status

1
TOP 68 Status
2
Reminding the Competition
EH
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

3
TOP 68 - The Present Situation
EH
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

4
TOP 68 - GMA FA 2.62 Working Group
Prof. Melzer Mr. Müller, GMA
GMA
Instrument Supplier
Connector Suppliers
Customers
Mettler Toledo
EH Conducta
Knick
Schott
Bayer
Infraserv
BASF
Former SMEK Group
Requirements Specification Group
5
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 !!!
6
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

7
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