SE 557

pH Sensor


For special requirements and high-precision measurements with refillable liquid electrolyte. Also digital, with Memosens technology.

Facts and Features

  • High accuracy
  • Extensive measuring range for pH and temperature
  • Refillable liquid electrolyte
  • 2 ceramic junctions
  • Self cleaning due to pressurization
  • Integrated temperature detector
  • Alpha glass, medium impedance, universal glass, fluoride resistant

Memosens Sensors

  • Perfect galvanic isolation thanks to Memosens technology
  • No influence of humidity in the connector
  • Precalibration in the lab
  • Digital data transfer
  • Integrated sensor diagnostics
  • Omega glass, high impedance for high-temperature applications, very low alkali error, CIP/SIP capable

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 cleaning due to pressurization (continuous outflow of electrolyte).

Boiler feed water, water for injection (WFI), semiconductor production, difficult process media requiring high measurement stability




Catalog Excerpts

Catalog Excerpt (en)

2530 |  SE 557 Memosens pH Sensor
Product Description | Specifications | Product Range
PDF (file size: 1.25 MB)

Catalog Excerpt (en)

12898 |  SE 557 pH Sensor (VP)
Product Description | Specifications | Product Range
PDF (file size: 0.21 MB)

Catalog Excerpt (en)

10104 |  Accessories for Sensors for pH Measurement
Product Description | Specifications | Product Range
PDF (file size: 0.94 MB)


Brochure (en)

13210 |  Memosens - The complete solution for smart sensor applications.
PDF (file size: 4.3 MB)

Brochure (en)

13396 |  Sensors - For measuring pH/ORP, conductivity or oxygen. Digital or analog.
PDF (file size: 2.22 MB)

Brochure (en)

13978 |  CaliMat - New pH Buffer Solutions
PDF (file size: 0.69 MB)


Manual (en)

12419 |  pH sensor SE 557
PDF (file size: 0.34 MB)

Manual (en)

14166 |  ZU 1054 | Sensorschutz
PDF (file size: 0.41 MB)

Control Drawings

Control Drawing (en)

14186 |  Inductive Sensor-Cable Connection System Memosens
Zeichnungsnummer 214.410-240
PDF (file size: 0.24 MB)

Certificates / Approvals

EU Declaration of Conformity (en)

11060 |  Memosens Sensors | Types SE 5..X..-.MS.
Document No. EU190104F | 2019-01-04
PDF (file size: 1.42 MB)

EC-Type-Examination Certificate (en)

13170 |  pH Sensor Type SE 557X/*-*VP*(-***)
Document No. TÜV 15 ATEX 164143 X
PDF (file size: 5.04 MB)

EU-Type-Examination Certificate (en)

12827 |  Memosens Ex Sensors | Details see Document
DEKRA Document No. BVS 16 ATEX E 037 X | 2016-05-03
PDF (file size: 10.71 MB)


Form (en)

11052 |  Material Safety Data Sheet - CaliMat buffer solution pH 7,00
PDF (file size: 0.06 MB)

Form (en)

11054 |  Material Safety Data Sheet - CaliMat buffer solution pH 9,00
PDF (file size: 0.07 MB)

Form (en)

11055 |  Material Safety Data Sheet - CaliMat buffer solution pH 2,00
PDF (file size: 0.07 MB)

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