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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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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

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

Uniclean700

SE558 pH Sensor | VP | 120 mm | Ex | For ultrapure water, water and analytical chemistry
SE558 pH Sensor | VP | 120 mm | Ex | For ultrapure water, water and analytical chemistry
Product number:

SE558X/1-NVPN

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

SE558X/2-NVPN

SE559 pH Sensor | Memosens | 120 mm | Ex | For water and analytical chemistry
SE559 pH Sensor | Memosens | 120 mm | Ex | For water and analytical chemistry
Product number:

SE559X/1-NMSN

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

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

SE554X/1-NVPN

ARF101 Flow-Through Fitting | PVC | One sensor with PG 13.5 connection, 12 mm diameter and 120 mm length
ARF101 Flow-Through Fitting | PVC | One sensor with PG 13.5 connection, 12 mm diameter and 120 mm length
Product number:

ARF101

SE103N pH Sensor | 170 mm| Glass Body | For rapid sample change and low sample temperatures
SE103N pH Sensor | 170 mm| Glass Body | For rapid sample change and low sample temperatures
Product number:

SE103N

SE555 pH Sensor | Memosens | 225 mm | Ex | Sterilizable | For aggressive media
SE555 pH Sensor | Memosens | 225 mm | Ex | Sterilizable | For aggressive media
Product number:

SE555X/2-NMSN

SE555 pH/ORP Sensor | Memosens | 225 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
SE555 pH/ORP Sensor | Memosens | 225 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
Product number:

SE555X/2-AMSN

SE555 pH Sensor | VP | 120 mm | Ex | Sterilizable | For aggressive media
SE555 pH Sensor | VP | 120 mm | Ex | Sterilizable | For aggressive media
Product number:

SE555X/1-NVPN

SE560 pH Sensor | VP | 120 mm | For low-conductivity media and low temperatures
SE560 pH Sensor | VP | 120 mm | For low-conductivity media and low temperatures
Product number:

SE560

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

Portavo 902 COND Portable Conductivity Transmitter | Memosens/Analog Sensors
Portavo 902 COND Portable Conductivity Transmitter | Memosens/Analog Sensors
Product number:

902Cond

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

MemoRail A1401 Compact Multiparameter Transmitter | Memosens Sensors | 1x 4…20 mA Active Output | 24 V DC Power Supply
MemoRail A1401 Compact Multiparameter Transmitter | Memosens Sensors | 1x 4…20 mA Active Output | 24 V DC Power Supply
Product number:

A1401N-P1-10

SE555 pH/ORP Sensor | Memosens | 120 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
SE555 pH/ORP Sensor | Memosens | 120 mm | Ex | CIP/SIP capable | Sterilizable | For aggressive media
Product number:

SE555X/1-AMSN

Portavo 904 PH Portable pH/ORP Transmitter | Memosens/Analog Sensors | Data Logger
Portavo 904 PH Portable pH/ORP Transmitter | Memosens/Analog Sensors | Data Logger
Product number:

904pH

SE104N pH Puncture Sensor | Noryl Plastic Body | For semi-solid and viscous samples
SE104N pH Puncture Sensor | Noryl Plastic Body | For semi-solid and viscous samples
Product number:

SE104N

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

Portavo 904X COND Portable Conductivity Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Data Logger
Portavo 904X COND Portable Conductivity Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Data Logger
Product number:

904XCond

SE615 Conductivity Sensor | 2 Graphite electrodes | Memosens | 120 mm | For water and wastewater treatment
SE615 Conductivity Sensor | 2 Graphite electrodes | Memosens | 120 mm | For water and wastewater treatment
Product number:

SE615/1-MS

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

902pH

WA130H SensoGate Retractable Fitting | Modular | Pneumatic | For Uniclean and Unical | For hygienic applications
WA130H SensoGate Retractable Fitting | Modular | Pneumatic | For Uniclean and Unical | For hygienic applications
Product number:

WA130H

SE554 pH Sensor | Memosens | 225 mm | Ex | For very high ionic strength media
SE554 pH Sensor | Memosens | 225 mm | Ex | For very high ionic strength media
Product number:

SE554X/2-NMSN

Protos II 4400 C Modular Multiparameter-Transmitter | Wide Sensor Selection | Corrosion-Proof Coating | 4-Wire | Broad-Range Power Supply
Protos II 4400 C Modular Multiparameter-Transmitter | Wide Sensor Selection | Corrosion-Proof Coating | 4-Wire | Broad-Range Power Supply
Product number:

4400 C

Stratos Pro A221N Multiparameter Transmitter | Memosens/Analog Sensors | Profibus
Stratos Pro A221N Multiparameter Transmitter | Memosens/Analog Sensors | Profibus
Product number:

A221N

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

SE706X/1-NMSN

Stratos Pro A231N Multiparameter Transmitter | Memosens/Analog Sensors | Foundation Fieldbus
Stratos Pro A231N Multiparameter Transmitter | Memosens/Analog Sensors | Foundation Fieldbus
Product number:

A231N

Stratos Eco 2405 pH pH/ORP Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Stratos Eco 2405 pH pH/ORP Transmitter | Analog Sensors | Ex FM Cl 1 Div 2 | 4-Wire
Product number:

2405 pH

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

MemoSuite Advanced Sensor Management Tool | Calibration function, diagnostics and database documentation
MemoSuite Advanced Sensor Management Tool | Calibration function, diagnostics and database documentation
Product number:

SW-MS1400-A

SE680 Digital Toroidal Conductivity Sensor | Varivent DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | Varivent DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680N-V1N4U00M

SE564 ORP Sensor | Memosens | 120 mm | Ex | For highly contaminated media with pressure fluctuations
SE564 ORP Sensor | Memosens | 120 mm | Ex | For highly contaminated media with pressure fluctuations
Product number:

SE564X/1-NMSN

SE740 Optical Oxygen Sensor | M12 (8 pins) | 325 mm | For demanding hygienic environments
SE740 Optical Oxygen Sensor | M12 (8 pins) | 325 mm | For demanding hygienic environments
Product number:

SE740/3

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

SE680X-KUN4U00M

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

A201N-MSPH-0

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

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

SE605H-NMSH

SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680N-C1N4U00M

CONDI 3400X-051 Inductive Conductivity Measuring Module | For Protos | Analog Toroidal Sensors | Ex
CONDI 3400X-051 Inductive Conductivity Measuring Module | For Protos | Analog Toroidal Sensors | Ex
Product number:

CONDI3400X-051

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

A201X-OXY-0

SE630 Conductivity Sensor | 2 Graphite electrodes | Memosens | NPT 1 | Measurement of conductivities up to 20 mS/cm
SE630 Conductivity Sensor | 2 Graphite electrodes | Memosens | NPT 1 | Measurement of conductivities up to 20 mS/cm
Product number:

SE630N-N1MSYB0M

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

SE656N -GEFTW0KM

SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
SE680 Digital Toroidal Conductivity Sensor | Dairy pipe DN 50 | Ex | FDA-approved PEEK | Measuring range 0 … 2000 mS/cm
Product number:

SE680X-C1N4U00M

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

E401N

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

A201B-OXY-0

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

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

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

WA132 SensoGate Retractable Fitting | Modular | Pneumatic | Process-wetted parts made of PTFE | For Uniclean and Unical
WA132 SensoGate Retractable Fitting | Modular | Pneumatic | Process-wetted parts made of PTFE | For Uniclean and Unical
Product number:

WA132

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

A201X-MSCOND-1

Stratos Multi E471N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel |EtherNet/IP | 2x 4…20 mA Outputs
Stratos Multi E471N Multiparameter Transmitter | Memosens/Analog Sensors | 1-Channel |EtherNet/IP | 2x 4…20 mA Outputs
Product number:

E471N

ARD230 Immersion Fitting | Stainless Steel | One sensor with PG 13.5 connection | With small Diameter
ARD230 Immersion Fitting | Stainless Steel | One sensor with PG 13.5 connection | With small Diameter
Product number:

ARD230

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

9000-NS

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

900-XC

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

A201X-MSOXY-1

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

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

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

A201N-PH-1

Stratos Evo A402N Multiparameter Transmitter | Memosens/Analog Sensors | HART | 4-Wire
Stratos Evo A402N Multiparameter Transmitter | Memosens/Analog Sensors | HART | 4-Wire
Product number:

A402N

ARF210 Flow-Through Fitting | Modular | Stainless steel | Up to three sensors
ARF210 Flow-Through Fitting | Modular | Stainless steel | Up to three sensors
Product number:

ARF210

766 Laboratory pH Meter | Automatic device test (Gaincheck) and calibration (Calimatic)
766 Laboratory pH Meter | Automatic device test (Gaincheck) and calibration (Calimatic)
Product number:

766

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

SE554X/1-NMSN

SE706 Oxygen Sensor | VP | 220 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
SE706 Oxygen Sensor | VP | 220 mm | Measuring range (resolution) 0 ... 50 mg/l (6 μg/l)
Product number:

SE706/2

ARD250 Immersion Fitting | PP-H | For sensors with PG 13.5 thread
ARD250 Immersion Fitting | PP-H | For sensors with PG 13.5 thread
Product number:

ARD250

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

A201N-OXY-0

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

PN4400-095

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

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

OXY 3400-067 Oxygen Measuring Module | For Protos | Analog Amperometric Sensors
OXY 3400-067 Oxygen Measuring Module | For Protos | Analog Amperometric Sensors
Product number:

OXY3400-067

SE625 2-Electrode Conductivity Sensor | Memosens | Measuring range 0 … 1,000 μS/cm
SE625 2-Electrode Conductivity Sensor | Memosens | Measuring range 0 … 1,000 μS/cm
Product number:

SE625-MS

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

COND3400-041

MemoRail Modbus A1405N Compact Multiparameter Transmitter | Memosens Sensors | Modbus RTU | 2 Channels
MemoRail Modbus A1405N Compact Multiparameter Transmitter | Memosens Sensors | Modbus RTU | 2 Channels
Product number:

A1405N-P2-210

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

A201B-CONDI-1

SE655 Toroidal Conductivity Sensor | Memosens | 3 m Fixed cable | PEEK | High chemical resistance
SE655 Toroidal Conductivity Sensor | Memosens | 3 m Fixed cable | PEEK | High chemical resistance
Product number:

SE655N-GEFFT0AM

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

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

ARD50EL

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

SE555 pH Sensor | Memosens | 120 mm | Ex | PWIS-free | Sterilizable | For aggressive media
SE555 pH Sensor | Memosens | 120 mm | Ex | PWIS-free | Sterilizable | For aggressive media
Product number:

SE555X/1-NMSN-LABS

OUT 3400-071 Output Extension Module | For Protos
OUT 3400-071 Output Extension Module | For Protos
Product number:

OUT3400-071

Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic Surface | 4-Wire | 24 V AC/DC Power Supply
Protos II 4400X S Modular Multiparameter-Transmitter | Wide Sensor Selection | Ex | Hygienic Surface | 4-Wire | 24 V AC/DC Power Supply
Product number:

4400 XS/24V

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

SE655N-GEFTT0AM

Stratos Pro A221X Multiparameter Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Profibus
Stratos Pro A221X Multiparameter Transmitter | Memosens/Analog Sensors | Ex Zone 0/1 | Profibus
Product number:

A221X

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

A201N-CC-1

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

COMPA3400X-081

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