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Products for process analysis

For over 75 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
Analog and digital Memosens sensors for measuring pH, ORP, conductivity or oxygen
Fittings
From immersion and inline fittings to flow-through fittings and retractable fittings
Transmitters
From measuring devices for DIN rails to completely modular systems
Pneumatic Controller
Electro-pneumatic controller for fully automated measurement, cleaning and calibration
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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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

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

Uniclean700

ARF240 Flow-Through Fitting | Stainless steel | For direct installation in pipelines with DN 50 cross-section
ARF240 Flow-Through Fitting | Stainless steel | For direct installation in pipelines with DN 50 cross-section
Product number:

ARF240

SE558 pH Sensor | Memosens | 225 mm | Ex | For ultrapure water, water and analytical chemistry
SE558 pH Sensor | Memosens | 225 mm | Ex | For ultrapure water, water and analytical chemistry
Product number:

SE558X/2-NMSN

SE707 Oxygen Sensor | Memosens | 320 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707 Oxygen Sensor | Memosens | 320 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
Product number:

SE707X/3-NMSN

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

SE707 Oxygen Sensor | Memosens | 220 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
SE707 Oxygen Sensor | Memosens | 220 mm | Ex | Measuring range (resolution) 0 ... 50 mg/l (1 μg/l)
Product number:

SE707X/2-NMSN

SE670 Toroidal Conductivity Sensor | Coupling nut G 1 1/2“ | PP | Insensitive to contamination and corrosion
SE670 Toroidal Conductivity Sensor | Coupling nut G 1 1/2“ | PP | Insensitive to contamination and corrosion
Product number:

SE670/U1

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

MemoRail Modbus A1405N Compact Multiparameter Transmitter | Memosens Sensors | Modbus RTU | 1 Channel
MemoRail Modbus A1405N Compact Multiparameter Transmitter | Memosens Sensors | Modbus RTU | 1 Channel
Product number:

A1405N-P2-110

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

A201N-MSPH-1

ARF201 Flow-Through Fitting | PP-H | One sensor
ARF201 Flow-Through Fitting | PP-H | One sensor
Product number:

ARF201

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

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

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

MS4400X-160

SE102-MS pH Sensor | 110 mm | Memosens | Glass Body | For Precision measurements and chemical applications
SE102-MS pH Sensor | 110 mm | Memosens | Glass Body | For Precision measurements and chemical applications
Product number:

SE102-MS

SE605H 2-Electrode Conductivity Sensor | Memosens | Ingold socket | Hygienic design
SE605H 2-Electrode Conductivity Sensor | Memosens | Ingold socket | Hygienic design
Product number:

SE605H-NMSH

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

Uniclean700

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

A201B-MSOXY-0

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

9000-NC

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

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

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

Portavo 904X PH Portable pH/ORP Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Data Logger
Portavo 904X PH Portable pH/ORP Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Data Logger
Product number:

904XpH

SE655 Toroidal Conductivity Sensor | Memosens | 7 m Fixed cable | Ex | PEEK | High chemical resistance
SE655 Toroidal Conductivity Sensor | Memosens | 7 m Fixed cable | Ex | PEEK | High chemical resistance
Product number:

SE655X-GEFTT0AM

SE740 Optical Oxygen Sensor | M12 (8 pins) | 425 mm | For demanding hygienic environments
SE740 Optical Oxygen Sensor | M12 (8 pins) | 425 mm | For demanding hygienic environments
Product number:

SE740/4

Portavo 902 PH Portable pH/ORP Transmitter | Memosens/Analog Sensors
Portavo 902 PH Portable pH/ORP Transmitter | Memosens/Analog Sensors
Product number:

902pH

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

OXY3400X-067

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

SE656 Toroidal Conductivity Sensor | Memosens | Fixed cable | Ex | PFA | Resistant to highly oxidizing media
SE656 Toroidal Conductivity Sensor | Memosens | Fixed cable | Ex | PFA | Resistant to highly oxidizing media
Product number:

SE656X -GEFTW0KM

SE660 Electrodeless Conductivity Sensor
SE660 Electrodeless Conductivity Sensor
Product number:

SE660/11

Portavo 907 Multichannel MS Portable Multiparameter Transmitter | Memosens Sensors | Multichannel Function | Data Logger | Add-On Functions
Portavo 907 Multichannel MS Portable Multiparameter Transmitter | Memosens Sensors | Multichannel Function | Data Logger | Add-On Functions
Product number:

907MULTICHANNELMS

Portavo 907 MULTI PH Portable Multiparameter Transmitter | Memosens Sensors | Analog pH Sensors | Data Logger | Add-On Functions
Portavo 907 MULTI PH Portable Multiparameter Transmitter | Memosens Sensors | Analog pH Sensors | Data Logger | Add-On Functions
Product number:

907MULTIpH

SE202 2-Electrode Conductivity Sensor | Stainless Steel Body | For media with low to very low conductivity
SE202 2-Electrode Conductivity Sensor | Stainless Steel Body | For media with low to very low conductivity
Product number:

SE202

ARD50 EL Immersion Fitting | Modular | PP-EL | Ex | One Sensor
ARD50 EL Immersion Fitting | Modular | PP-EL | Ex | One Sensor
Product number:

ARD50EL

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

E401N.020

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 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

SE655 Toroidal Conductivity Sensor | Fixed cable | Ex | PEEK | High chemical resistance
SE655 Toroidal Conductivity Sensor | Fixed cable | Ex | PEEK | High chemical resistance
Product number:

SE655X

SE555 pH Sensor | Coax (S8) | 120 mm | Ex | Sterilizable | For aggressive media
SE555 pH Sensor | Coax (S8) | 120 mm | Ex | Sterilizable | For aggressive media
Product number:

SE555X/1-NS8N

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

2405 CondI

SE547N pH Sensor | Memosens | 120 mm | CIP/SIP capable and autoclavable
SE547N pH Sensor | Memosens | 120 mm | CIP/SIP capable and autoclavable
Product number:

SE547N/1-NMSN-A2

SE571 pH Sensor | Memosens | 225 mm | Ex | For demanding applications in the chemical industry
SE571 pH Sensor | Memosens | 225 mm | Ex | For demanding applications in the chemical industry
Product number:

SE571X/2-NMSN

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

A201X-MSOXY-0

ARF215 Flow-Through Fitting | Modular | PP-H or PVDF | Up to three sensors
ARF215 Flow-Through Fitting | Modular | PP-H or PVDF | Up to three sensors
Product number:

ARF215

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

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

SE680 Digital Toroidal Conductivity Sensor | For ARD 75 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | For ARD 75 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680N-KUN4U00M

SE604 2-Electrode Conductivity Sensor | Memosens | Ex | Measuring range from ultrapure water to 500 μS/cm
SE604 2-Electrode Conductivity Sensor | Memosens | Ex | Measuring range from ultrapure water to 500 μS/cm
Product number:

SE604X-MS

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

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

SE554X/3-NMSN

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

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

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

MSU4400X-180

Stratos Multi E401X Multiparameter Transmitter | Memosens/Analog Sensors | Ex | 1-Channel | 2x 4…20 mA Outputs
Stratos Multi E401X Multiparameter Transmitter | Memosens/Analog Sensors | Ex | 1-Channel | 2x 4…20 mA Outputs
Product number:

E401X

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

SE100N pH Sensor | 170 mm| Glass Body | Integrated temperature sensor | For rapid sample change and low sample temperatures
SE100N pH Sensor | 170 mm| Glass Body | Integrated temperature sensor | For rapid sample change and low sample temperatures
Product number:

SE100N

ARI106 (H) Inline Fitting | Modular | Stainless steel or highly resistant plastic | For 12-mm sensors | For chemical and hygienic applications
ARI106 (H) Inline Fitting | Modular | Stainless steel or highly resistant plastic | For 12-mm sensors | For chemical and hygienic applications
Product number:

ARI106

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

SE554X/1-AMSN

SE557 pH Sensor | Memosens | 120 mm | Ex | Omega glass | For process media requiring high measurement stability
SE557 pH Sensor | Memosens | 120 mm | Ex | Omega glass | For process media requiring high measurement stability
Product number:

SE557X/1-NMSH

SE555 pH Sensor | Coax (S8) | 225 mm | Ex | Sterilizable | For aggressive media
SE555 pH Sensor | Coax (S8) | 225 mm | Ex | Sterilizable | For aggressive media
Product number:

SE555X/2-NS8N

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

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

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

Portavo 904 OXY Portable Oxygen Transmitter | Memosens Sensors | Data Logger
Portavo 904 OXY Portable Oxygen Transmitter | Memosens Sensors | Data Logger
Product number:

904Oxy

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

SE106N pH Sensor | 170 mm| Glass Body | For samples with low conductivities or in coating media
SE106N pH Sensor | 170 mm| Glass Body | For samples with low conductivities or in coating media
Product number:

SE106N

SE715 Oxygen Sensor | Memosens | 120 mm | For water and wastewater treatment
SE715 Oxygen Sensor | Memosens | 120 mm | For water and wastewater treatment
Product number:

SE715/1-MS

PN 4400-095 Communication Module | For Protos | PROFINET
PN 4400-095 Communication Module | For Protos | PROFINET
Product number:

PN4400-095

WA131MH SensoGate Retractable Fitting | Modular | Manual with rotary drive | For hygienic applications
WA131MH SensoGate Retractable Fitting | Modular | Manual with rotary drive | For hygienic applications
Product number:

WA131MH

SE102-AN pH Sensor | 110 mm | Glass Body | For Precision measurements and chemical applications
SE102-AN pH Sensor | 110 mm | Glass Body | For Precision measurements and chemical applications
Product number:

SE102-AN

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

SE340 Optical Oxygen Sensor | Digital | POM / Stainless Steel Body | Flow-independent
SE340 Optical Oxygen Sensor | Digital | POM / Stainless Steel Body | Flow-independent
Product number:

SE340