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Products for process analytics

For over 80 years, Knick has been advising and supporting companies across the globe on process analytics. In addition to analog and digital sensors for measuring pH, ORP, conductivity, and oxygen, Knick also offers high-quality industrial measuring devices and fittings. Knick’s automatic cleaning and calibration systems are unrivaled solutions on the market.

Products for Measuring pH, ORP, Conductivity and Oxygen

Sensors
Sensors
Analog and digital Memosens sensors for measuring pH, ORP, conductivity or oxygen
Fittings
Fittings
From immersion and inline fittings to flow-through fittings and retractable fittings
Transmitters
Transmitters
From measuring devices for DIN rails to completely modular systems
Pneumatic Controller
Pneumatic Controller
Electro-pneumatic controller for fully automated measurement, cleaning and calibration
cCare | Fully Automated Sensor Maintenance System
cCare | Fully Automated Sensor Maintenance System
Accurate measurements through fully automatic cleaning and calibration of pH sensors

cCare - fully automated

In the process industry, the pH value is the most important parameter for controlling chemical reactions and the consumption of raw materials. cCare ensures accurate measurements through fully automatic cleaning and calibration of pH sensors and reduces maintenance and material costs at the same time.

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We look forward hearing from you!
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Memosens - Contactless sensor coupling

Moisture, potential interference and other harsh environmental conditions often pose problems for metallic sensor contacts. They can lead to reductions in sensor service life and may influence the measurement results. In order to eliminate problems like these, Memosens sensors are equipped with an inductive connection that is resistant to interfering influences.

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Our New Products

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Uniclean 700 Series - Modular Control System for Measuring Loops
Uniclean 700 Series - Modular Control System for Measuring Loops
Product number:

Uniclean700

Unical 9000-XC
Unical 9000 Electro-pneumatic controller | For automatic cleaning and calibration | Corrosion-proof coating
Product number:

9000-NC

Front view of glass electrode for ORP measurement SE565X/*-NMSN-B1 with Memosens
SE565 ORP Sensor | Memosens | 225 mm | Ex | For hygienic processes and sterile applications
Product number:

SE565X/2-NMSN-B1

Stratos Eco 2405 COND Conductivity Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Stratos Eco 2405 COND Conductivity Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Product number:

2405 Cond

SE706 Oxygen Sensor | VP | 120 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706 Oxygen Sensor | VP | 120 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
Product number:

SE706/1

Stratos Pro A201 PH pH/ORP Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 PH pH/ORP Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-PH-1

MS 4400-160 Multiparameter Measuring Module | For Protos | Memosens Sensors | 1 Channel
MS 4400-160 Multiparameter Measuring Module | For Protos | Memosens Sensors | 1 Channel
Product number:

MS4400-160

Glass electrode for pH measurement SE558X/*-NMSN-B1 with Memosens
SE558 pH Sensor | Memosens | 225 mm | Ex | For ultrapure water, water and analytical chemistry
Product number:

SE558X/2-NMSN-B1

Stratos Pro A201 MSOXY Oxygen Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Stratos Pro A201 MSOXY Oxygen Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Product number:

A201N-MSOXY-0

WA150 Ceramat Retractable Fitting | Ceramic lock-gate sealing | Pneumatic | Carbon-fiber-reinforced PVDF or PEEK
WA150 Ceramat Retractable Fitting | Ceramic lock-gate sealing | Pneumatic | Carbon-fiber-reinforced PVDF or PEEK
Product number:

WA150

Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 2 | HART | 4 ... 20 mA Output
Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 2 | HART | 4 ... 20 mA Output
Product number:

A201B-CONDI-0

PH 3400X-033 pH/ORP Measuring Module | For Protos | pH Differential Electrodes (Pfaudler) | Ex
PH 3400X-033 pH/ORP Measuring Module | For Protos | pH Differential Electrodes (Pfaudler) | Ex
Product number:

PH3400X-033

SE680 Digital Toroidal Conductivity Sensor | Clamp 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | Clamp 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680X-J2N4U00M

WA131H SensoGate Retractable Fitting | Modular | Pneumatic | For simple, commercial controllers | For hygienic applications
WA131H SensoGate Retractable Fitting | Modular | Pneumatic | For simple, commercial controllers | For hygienic applications
Product number:

WA131H

Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 4 ... 20 mA Output
Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 4 ... 20 mA Output
Product number:

A201X-CONDI-0

Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | HART | 2x 4 ... 20 mA Outputs
Product number:

A201N-MSCONDI-1

Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic surface | 4-Wire | Broad-range power supply
Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic surface | 4-Wire | Broad-range power supply
Product number:

4400 XS/VPW

SE740 Optical Oxygen Sensor | M12 (8 pins) | 215 mm | For demanding hygienic environments
SE740 Optical Oxygen Sensor | M12 (8 pins) | 215 mm | For demanding hygienic environments
Product number:

SE740/2

LDO 4400-170 Oxygen Measuring Module | For Protos | Optical Sensor SE740
LDO 4400-170 Oxygen Measuring Module | For Protos | Optical Sensor SE740
Product number:

LDO4400-170

WA133 SensoGate Retractable Fitting | Modular | Pneumatic | Process-wetted parts made of PTFE | For simple, commercial controllers
WA133 SensoGate Retractable Fitting | Modular | Pneumatic | Process-wetted parts made of PTFE | For simple, commercial controllers
Product number:

WA133

WA160 Ceramat Retractable Immersion Fitting | Ceramic lock-gate sealing | Pneumatic | Immersion depth up to 2000 mm
WA160 Ceramat Retractable Immersion Fitting | Ceramic lock-gate sealing | Pneumatic | Immersion depth up to 2000 mm
Product number:

WA160

Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Hygienic Surface
Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Hygienic Surface
Product number:

900-NS

SE604 2-Electrode Conductivity Sensor | 7-Pole | Measuring range from 1 nS/cm to 1000 μS/cm
SE604 2-Electrode Conductivity Sensor | 7-Pole | Measuring range from 1 nS/cm to 1000 μS/cm
Product number:

SE604

SE554 pH Sensor | VP | 325 mm | Ex | For very high ionic strength media
SE554 pH Sensor | VP | 325 mm | Ex | For very high ionic strength media
Product number:

SE554X/3-NVPN

Stratos Pro A201 OXY Oxygen Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 OXY Oxygen Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Product number:

A201N-OXY-1

Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Product number:

A201N-COND-1

COMPA 3400-081 Communication Module | For Protos | PROFIBUS PA
COMPA 3400-081 Communication Module | For Protos | PROFIBUS PA
Product number:

COMPA3400-081

Stratos Pro A201 OXY Oxygen Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 OXY Oxygen Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-OXY-1

ARD75 Immersion Fitting | Modular | PP-H or PVDF | Up to three sensors
ARD75 Immersion Fitting | Modular | PP-H or PVDF | Up to three sensors
Product number:

ARD75

ARD75 Immersion Fitting | Modular | PP-EL | Ex | Up to three sensors
ARD75 Immersion Fitting | Modular | PP-EL | Ex | Up to three sensors
Product number:

ARD75EL

Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-COND-1

Unical 9000 Electro-pneumatic controller | For automatic cleaning and calibration | Ex | Hygienic Surface
Unical 9000 Electro-pneumatic controller | For automatic cleaning and calibration | Ex | Hygienic Surface
Product number:

9000-XS

Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Product number:

A201N-MSCOND-0

Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | HART | 2x 4 ... 20 mA Outputs
Product number:

A201N-MSCOND-1

Stratos Pro A231X Multiparameter Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Foundation Fieldbus
Stratos Pro A231X Multiparameter Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Foundation Fieldbus
Product number:

A231X

Unical 9000-XC
Unical 9000 Electro-pneumatic controller | For automatic cleaning and calibration | Ex | Corrosion-proof coating
Product number:

9000-XC

Stratos Pro A201 CC Dual Conductivity Transmitter | Analog Sensors | HART | 4 ... 20 mA Output
Stratos Pro A201 CC Dual Conductivity Transmitter | Analog Sensors | HART | 4 ... 20 mA Output
Product number:

A201N-CC-0

Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | HART | 2x 4 ... 20 mA Outputs
Product number:

A201N-CONDI-1

Stratos Pro A201 MSPH pH/ORP Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSPH pH/ORP Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-MSPH-1

WA131 SensoGate Retractable Fitting | Modular | Pneumatic | For simple, commercial controllers
WA131 SensoGate Retractable Fitting | Modular | Pneumatic | For simple, commercial controllers
Product number:

WA131

Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 COND Conductivity Transmitter | Analog Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201B-COND-1

PH 3400-033 pH/ORP Measuring Module | For Protos | pH Differential Electrodes (Pfaudler)
PH 3400-033 pH/ORP Measuring Module | For Protos | pH Differential Electrodes (Pfaudler)
Product number:

PH3400-033

WA130 SensoGate Retractable Fitting | Modular | Pneumatic | For Uniclean and Unical
WA130 SensoGate Retractable Fitting | Modular | Pneumatic | For Uniclean and Unical
Product number:

WA130

Stratos Pro A201 MSPH pH/ORP Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSPH pH/ORP Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201B-MSPH-1

Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-MSCONDI-1

Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 4 ... 20 mA Output
Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | Ex Zone 0/1 | HART | 4 ... 20 mA Output
Product number:

A201X-MSCONDI-0

Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 CONDI Inductive Conductivity Transmitter | Analog Sensors | Ex Zone 0/1 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201X-CONDI-1

COMFF 3400-085 Communication Module | For Protos | Foundation Fieldbus
COMFF 3400-085 Communication Module | For Protos | Foundation Fieldbus
Product number:

COMFF3400-085

Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Ex | Hygienic Surface
Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Ex | Hygienic Surface
Product number:

900-XS

MSU 4400-180 Multiparameter Measuring Module | For Protos | Up to three Memosens sensors | Multichannel
MSU 4400-180 Multiparameter Measuring Module | For Protos | Up to three Memosens sensors | Multichannel
Product number:

MSU4400-180

COND 3400X-041 Conductivity Measuring Module | For Protos | Analog 2- or 4-Electrode Sensors | Ex
COND 3400X-041 Conductivity Measuring Module | For Protos | Analog 2- or 4-Electrode Sensors | Ex
Product number:

COND3400X-041

Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Corrosion-proof coating
Uniclean 900 Electro-pneumatic controller | For automatic cleaning | Corrosion-proof coating
Product number:

900-NC

Stratos Eco 2405 OXY Oxygen Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Stratos Eco 2405 OXY Oxygen Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Product number:

2405 Oxy

ARD220 Immersion Fitting | Stainless Steel | Up to three sensors with PG 13.5 connection
ARD220 Immersion Fitting | Stainless Steel | Up to three sensors with PG 13.5 connection
Product number:

ARD220

COMFF 3400X-085 Communication Module | For Protos | Foundation Fieldbus | Ex
COMFF 3400X-085 Communication Module | For Protos | Foundation Fieldbus | Ex
Product number:

COMFF3400X-085

SE680 Digital Toroidal Conductivity Sensor | SMS 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | SMS 2" | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680X-M2N4U00M

Stratos Multi E461N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel |PROFINET | 2x 4…20 mA Outputs
Stratos Multi E461N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel |PROFINET | 2x 4…20 mA Outputs
Product number:

E461N

OXY 3400X-067 Module for Measurement of Oxygen | Ex
OXY 3400X-067 Module for Measurement of Oxygen | Ex
Product number:

OXY3400X-067

WA111 Retractable Fitting | Modular | Pneumatic or hydropneumatic | Highly resistant plastic
WA111 Retractable Fitting | Modular | Pneumatic or hydropneumatic | Highly resistant plastic
Product number:

WA111

Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | Ex Zone 2 | HART | 4 ... 20 mA Output
Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | Ex Zone 2 | HART | 4 ... 20 mA Output
Product number:

A201B-MSCOND-0

ARF203 Flow-Through Fitting | Stainless steel or Hastelloy C22 | For sensors and fittings with 25-mm Ingold socket
ARF203 Flow-Through Fitting | Stainless steel or Hastelloy C22 | For sensors and fittings with 25-mm Ingold socket
Product number:

ARF203

WA154 Ceramat Retractable Fitting | Ceramic lock-gate sealing | Pneumatic | Stainless steel, Titanium or Hastelloy | Immersion depth up to 300 mm
WA154 Ceramat Retractable Fitting | Ceramic lock-gate sealing | Pneumatic | Stainless steel, Titanium or Hastelloy | Immersion depth up to 300 mm
Product number:

WA154

SE680 Digital Toroidal Conductivity Sensor | For ARF 210/215 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | For ARF 210/215 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680X-K8N4U00M

Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSCOND Conductivity Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201B-MSCOND-1

cCare | Fully Automated pH Sensor Maintenance System
cCare | Fully Automated pH Sensor Maintenance System
Product number:

cCare

Stratos Pro A201 PH pH/ORP Transmitter | Analog Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 PH pH/ORP Transmitter | Analog Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201B-PH-1

Stratos Multi E401N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel | HART | 2x 4…20 mA Outputs
Stratos Multi E401N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel | HART | 2x 4…20 mA Outputs
Product number:

E401N.010

Stratos Multi E401X Multiparameter Transmitter | Memosens/Analog Sensors | Ex | 2-Channel | HART | 2x 4…20 mA Outputs
Stratos Multi E401X Multiparameter Transmitter | Memosens/Analog Sensors | Ex | 2-Channel | HART | 2x 4…20 mA Outputs
Product number:

E401X.030

SE554 pH Sensor | VP | 425 mm | Ex | For very high ionic strength media
SE554 pH Sensor | VP | 425 mm | Ex | For very high ionic strength media
Product number:

SE554X/4-NVPN

Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Stratos Pro A201 MSCONDI Inductive Conductivity Transmitter | Memosens Sensors | HART | 4 ... 20 mA Output
Product number:

A201N-MSCONDI-0

Stratos Pro A201 MSOXY Oxygen Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Stratos Pro A201 MSOXY Oxygen Transmitter | Memosens Sensors | Ex Zone 2 | HART | 2x 4 ... 20 mA Outputs
Product number:

A201B-MSOXY-1

PID 3400X-121 Configurable Controller Module | For Protos | Analog, digital or PID controller | Ex
PID 3400X-121 Configurable Controller Module | For Protos | Analog, digital or PID controller | Ex
Product number:

PID3400X-121