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Knick – SE 551 Memosens pH Sensor


Knick – SE 551 Memosens pH Sensor

For special requirements and high-precision measurements with refillable liquid electrolyte. Elimination of typical junction problems resulting in high measurement accuracy in ultrapure water as well as in heavily polluted
media and at high temperatures. Integrated, refillable liquid electrolyte reservoir. 2 ceramic junctions, self leaning due to pressurization (continuous outflow of electrolyte). Silver ion trap prevents junction fouling and contamination. Also suitable for hazardous locations.


  • Boiler feed water
  • Water for injection (WFI)
  • Semiconductor production
  • Media containing proteins or sulfides
  • Difficult process media requiring high measurement stability.


  • High accuracy
  • Extensive temperature range
  • Refillable liquid electrolyte
  • 2 ceramic junctions
  • Self cleaning due to pressurization