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SE554 pH/ORP Sensor | Memosens | 120 mm | Ex | For very high ionic strength media

Description

SE554 pH/ORP Sensor | Memosens | 120 mm | Ex | For very high ionic strength media

Low-Maintenance pH/ORP Sensor for Simultaneous Measurement in Demanding Chemical Industry Processes

  • Simultaneous measurement of pH and ORP value possible
  • Solid electrolyte
  • Integrated temperature detector
  • Low maintenance, no electrolyte refilling
  • 2 open hole junctions, no blockage due to solids in the medium
  • Perfect galvanic isolation thanks to Memosens technology
  • No influence of humidity in the connector
  • Precalibration in the lab
  • Digital data transfer

The special design allows for high accuracy, stability and durability. The reference system is in direct contact with the measured medium via two open connections, which minimizes the risk of a junction becoming blocked when there are solids in the medium. The high potassium chloride content and its distribution in the solid  electrolyte reduce interference from diffusion potentials at the junction. The sensor with the advanced Memosens II technology by Knick is designed for higher ambient  temperatures.

Memosens II by Knick:

  • Ambient temperature up to 100 °C
  • Ex approval for gas and dust
  • Diagnostics with load matrix and statistics on transmitters with graphical display

Applications
Measurement in media of extremely high ionic strength, salt brines, strongly oxidizing media, acidic and alkaline media

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Technical details

Measurement Parameter:
pH
ORP
Connector:
Memosens
Measuring Range:
0 … 14 pH
± 1500 mV
Explosion protection:
Yes
Length:
120 mm
Process Connection:
PG 13.5
Temperature Detector:
NTC 30 kΩ
Reference System:
Ag/AgCl/Cl solid electrolyte
Relative process pressure:
0 … 10 bar (0 … 145 psi)
Wetted materials:
Body → Glass
Electrode (ORP) → Platinum
Junction → 2× hole
Sensor tip → Alpha glass
Process Temperature:
0 … 130 °C (32 … 266 °F)
Tightening torque:
1 ... 3 Nm
Electrical connection:
Memosens connector

Norms

Downloads

Manuals

[14165] User Manual | Betriebsanleitung
ZU1054 Sensor Protection | Sensorschutz
Version 01
[98688] User Manual (DE, EN, KO)
Memosens Cable CA/MS
Version 09
[102782] User Manual
SE554 pH Sensor, pH/ORP Sensor
Version 04
[17423] User Manual
SE554X/*-AMSN | SE554X/*-NMSN
incl. Ex Approval Japan (JPEx DEK19.0046X)

Data Sheets

[104988] Data Sheet
SE554 pH Sensor, pH/ORP Sensor
Product Description | Specifications | Product Range

Certificates

[260603] Manufacurer's Declaration
Cytotoxity of sensors:
SE554X/*-N* und SE554X/*-A*
2026-06-03
[18334] Manufacurer's Declaration | Herstellererklärung
(EC) No. 1907/2006 (REACH)
2025-10-01
[16262] Korean safety certificate Kosha (KO)
No. 2020-KA4BO-0355X
SE55*Xl*-NMSN, SE605H-XMS****
[18254] Manufacurer's Declaration
Confirmation of the Compatibility of Digital Sensors from Our Company
Identifier: -B1
[18270] Certitficate of Conformity (China - Ex NEPSI)
Cert No. GYJ24.1052X
SE5aa X/b-*MS*-B1
2024-04-03
[18286] Certificate of Conformity (FM)
No. FM23CA0070X | 2024-04-16 | Canada
Memosens Sensors | Types SE 5**X/*-*MS*-B1 (pH/ORP)
[14155] Declaration of Compliance 2.1 (DE, EN)
according to EN 10204 | gemäß EN 10204
O-Ringe aus EPDM oder Silikon | O-rings made of EPDM or Silicone
[16292] Korean safety certificate Kosha (KO)
No. 2020-KA4BO-0368X
Measuring Cable CA/MS
[260317] Korean Safety Certificate (KCs)
SE5**X/*-*MS*-B1
[18294] IECEx Certificate of Conformity
No. IECEX DEK 22.0019X
Issue No. 1 | 2025-01-09
Memosens, types SE5**X/*−*MS*−B1, SE605*-X*MS****… and SE625-X*MS*******…
[18262] EU Declaration of Conformity (DE, EN, FR)
Sensors Types SE5**X/*-*MS*-*B1
EU230912A | 2025-04-30
[18278] Certificate of Conformity (FM)
No. FM23US0105X | 2024-04-16 | USA
Memosens Sensors | Types SE 5**X/*-*MS*-B1 (pH/ORP)

Safety guides

[11046] Material Safety Data Sheet
CaliMat buffer solution pH 9,00

Control Drawings

[18302] Control Drawing
Memosens pH Sensors Type SE5**X/*−*MS*−B1
Zeichnungsnummer 213.215-066 page 1b rev.1
ATEX, IECEx

Our service

Used in Process or Applications

pH value measurement in the pre-scrubber, the neutralization phase, and the lime scrubber as part of the flue gas desulfurization process in power plants.
The taste and quality of beer are highly dependent on the quality of the water used for brewing it. It is determined by pH and conductivity measurements.
Quality control of the raw water used in the treatment of drinking water is key.
Accurate measurement of pH values, redox potential, and dissolved oxygen in order to ensure optimal metabolism of the bacteria used in the purification process and in organic wastewater treatment as well, for example.

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