
אלקטרודות PH/ORP
General features
The electrodes listed below are all of the
combined type (Measurement+Reference),
without maintenance, and are classified by
their construction features, which makes them
adaptable to multiple applications.
Models and Applications
S401VG
Combined pH electrode for general use
S406VG
Combined ORP electrode for general use
S408MEC
Combined pH electrode for high temperature
liquids and/or installations under pressure
S408POL Plus
Combined pH electrode for harsh chemical
applications
S406POL
Combined ORP electrode for harsh chemical
applications
S406OXT
Combined ORP electrode for high temperature
liquids and/or installations under pressure
S401LC
Combined pH electrode for waters with low
electrical conductivity
S402PS
pH electrode for applications involving liquids
with a high suspended solids content
S403PS
ORP electrode for applications involving liquids
with a high suspended solids content.

Knick
SE 558 pH Sensor
Media with Very Low
Conductivity
■■ No signal interference with
Memosens technology
■■ No influence from moisture due to the
inductive connection
■■ Precalibration in the shop or lab
■■ Integrated sensor diagnostics
■■ Low maintenance, no refilling
of electrolyte
■■ Integrated temperature detector
■■ 3 ceramic junctions
■■ KCl reservoir for prevention of leaching
Temperature Range:
23 … 212 °F (-5 … 100 °C)
Pressure Range:
Full vacuum … 43 psig (-1… 3 bar)
pH Measuring Range: 0 … 14

Knick
SE 564 ORP Sensor
Heavy duty ORP sensor providing high reliability and precision.
Also digital, with Memosens technology.
Facts and Features
- Polymer electrolyte
- 2-hole junction – no blocking
- For industrial sewages
- Suitable for solvent-containing processes

Knick
SE 554 pH Sensor
Suspended Solids Applications
■■ No signal interference with
Memosens technology
■■ No influence from moisture due to the
inductive connection
■■ Pre-calibration in the shop or lab
■■ Integrated sensor diagnostics
■■ Low maintenance, no refilling
of electrolyte
■■ Integrated temperature detector
■■ Open junctions, no plugging
Temperature Range:
32 … 266 °F (0 … 130 °C)
Pressure Range:
0 … 145 psig (0 … 10 bar)
pH Measuring Range: 0 … 14
ORP Measuring Range: ± 1500 mV

Knick
SE 555 pH Sensor
■■ No influence from moisture due to the inductive connection
■■ No signal interference with Memosens technology
■■ Pre-calibration in the shop or lab
■■ Integrated temperature detector
■■ Integrated sensor diagnostics
■■ CIP- and SIP-capable
Temperature Range: 32 … 284°F (0 … 140°C)
Design Pressure Range: -14 … 180 psig (-1 … 12 bar)
pH Measuring Range: 0 … 14
ORP Measuring Range: ± 1500 mV

Knick
SE 565 ORP Sensor
ORP sensor for hygienic processes and sterile applications.
Facts and Features
- Perfect galvanic isolation thanks to Memosens technology
- No influence of humidity in the connector
- Digital data transfer
- Integrated sensor diagnostics
- State-of-the-art gel electrolyte
- Integrated temperature detector
- Ceramic junction
- For hygienic and sterile applications
- For heavily polluted media
- For media containing sulfides
- For media containing proteins
- Suitable for solvent-containing processes
The SE 565 ORP sensors are of low maintenance. Through a ceramic junction, the pressurized reference system with gel electrolyte is in contact with the process medium. The measuring electrode is made of platinum.