Industrial Transmitters
The pH, ORP, conductivity, and oxygen transmitters from Knick enable precise process monitoring with analog and digital/Memosens sensors in industrial applications. Our robust transmitters offer advanced diagnostic functions and support common communication protocols for seamless system integration. They are also available in hygienic versions or with explosion protection and guarantee maximum reliability and product quality in all industries, e.g. in the chemical, pharmaceutical, water treatment, and food processing industries.

Protos
Modular 4-wire premium multiparameter transmitter for all requirements with up to 6 parallel channels and hygienic or corrosion-resistant housing for Ex use up to Zone 1.
Via Ethernet-APL, PROFINET and HART, Protos can directly communicate advanced diagnostics data (vital data in accordance with NOA) and additional process values for predictive maintenance and many other applications to the process control system.
Protos: Modular Multi-Parameter Transmitters
Stratos Series
2- and 4-wire multiparameter process analyzers with fieldbus technology, high-resolution graphical display, measuring modules, memory card, and intuitive user navigation.
Stratos: Transmitters for pH, ORP, Conductivity and Oxygen Measurement
Portavo
The only mobile measuring device for explosive atmospheres in Zone 0/1, ideal for comparative laboratory/system measurements and for pre-calibrating Memosens sensors. Logging of measurement, sensor, calibration, and measuring point data.
Portavo: Portable Meters
MemoRail
Compact 4-wire transmitter in modular housing for 35 mm DIN rails for measuring with digital Memosens sensors. 4 ... 20 mA output or 2-channel with Modbus RTU.
MemoRail: DIN-Rail Transmitters
MemoTrans
Ultra-compact 2-wire multiparameter transmitter with direct connection to Memosens sensors.
MemoTrans: Ultra-compact TransmittersTake a look at our selection matrix to help you make your selection.
It provides an overview of our transmitter range and helps you find the right product series for your needs.
Alternatively, you can use the filter options to narrow down our products according to your criteria.
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A201N-PH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A402N
Communication (Output, Digital): HART
E401N.030
Communication (Output, Digital): HART
Current outputs: 2 Outputs
904pH
2405 pH
A1401N-P1-10
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 1 x 4…20 mA, active
4400 C
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
904Cond
E401N.020
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 4 Outputs
A201N-MSPH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
E401X.020
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 4 Outputs
A201N-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
E401N
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 2 Outputs
E401X.010
Communication (Output, Digital): HART
Current outputs: 2 Outputs
A201N-MSPH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201N-CONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A221X
Communication (Output, Digital): PROFIBUS
Current outputs: no mA output
A1401B-P1-30
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 1x 4…20 mA, passive
A201B-PH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201X-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
4400 XC/VPW
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
A405N
Communication (Output, Digital): Analog 4 ... 20 mA
A201X-MSCOND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-MSPH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
4400 S
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
E401X
Communication (Output, Digital): Analog 4 ... 20 mA
Current outputs: 2 Outputs
E461N.010
Communication (Output, Digital): PROFINET
Current outputs: 2 Outputs
A221N
Communication (Output, Digital): PROFIBUS
Current outputs: no mA output
A231N
Communication (Output, Digital): Foundation Fieldbus
Current outputs: no mA output
A201X-OXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-OXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201X-MSCOND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
E471N
Communication (Output, Digital): EtherNet/IP
Current outputs: 2 Outputs
A201X-MSOXY-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201N-PH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201N-OXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201X-MSOXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-MSOXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A1405N-P2-210
Communication (Output, Digital): Modbus RTU (RS485)
A201B-CONDI-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A1405N-P2-110
Communication (Output, Digital): Modbus RTU (RS485)
4400 XS/24V
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
A201N-CC-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
2405 Cond
A201X-PH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
4400 XC/24V
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
A201N-MSOXY-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-CONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201X-CONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201N-MSCONDI-1
Communication (Output, Digital): HART
A201B-MSCONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
4400 XS/VPW
Communication (Output, Digital): PROFIBUS, PROFINET, Foundation Fieldbus
A201X-MSPH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201N-OXY-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201N-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201X-OXY-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201X-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201N-MSCOND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201N-MSCOND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201B-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A231X
Communication (Output, Digital): Foundation Fieldbus
Current outputs: no mA output
2405 CondI
A201N-CC-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201N-CONDI-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201X-MSPH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201B-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
E471N.010
Communication (Output, Digital): EtherNet/IP
Current outputs: 2 Outputs
A201X-PH-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-MSPH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201X-MSCONDI-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201X-MSCONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201X-CONDI-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
2405 Oxy
E461N
Communication (Output, Digital): PROFINET
Current outputs: 2 Outputs
A201B-MSCOND-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-MSCOND-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
A201B-PH-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
E401N.010
Communication (Output, Digital): HART
Current outputs: 2 Outputs
E401X.030
Communication (Output, Digital): HART
Current outputs: 2 Outputs
A201N-MSCONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4…20 mA
A201B-MSOXY-1
Communication (Output, Digital): HART
Current outputs: 2x 4…20 mA
MemoTrans
Communication (Output, Digital): HART