Industrial Transmitters
Knick’s pH, ORP, conductivity, and oxygen transmitters and analyzers are indispensable devices for monitoring and controlling parameters using analog and digital sensors in a variety of industrial settings. Our transmitters are available in 2- or 4-wire configurations and feature explosion protection. They are fitted with robust housing and high IP protection to withstand harsh operating conditions in many different industrial processes and to ensure consistent performance over many years.
Knick transmitters also come with advanced diagnostic functions that enable proactive maintenance and troubleshooting to minimize downtime. Moreover, they are equipped with digital communication protocols such as Ethernet/IP, HART, FOUNDATION Fieldbus, Profibus DP, and Profibus PA, which enable seamless integration in control systems, thereby increasing process automation and efficiency.
From DIN rail transmitters to completely modular systems, our transmitters ensure optimum product quality in sectors such as water treatment, pharmaceuticals, chemicals, food processing, mining, oil and gas, semiconductors, and pulp and paper.
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Filter
A1401N-P1-10
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, active
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-11
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, active
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-30
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, passive
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-20
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, active
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-21
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, active
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-40
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, passive
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-41
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, passive
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-10
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, active
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-11
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, active
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-30
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, passive
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401N-P1-31
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, passive
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-31
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 1x 4 … 20 mA, passive
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-20
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, active
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-21
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, active
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-40
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, passive
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1401B-P1-41
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2x 4 … 20 mA, passive
Explosion protection: UL Class I, Div. 2
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Memosens
A1405N-P2-110
Communication (Output, Digital): Modbus RTU (RS485)
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Digital, Memosens
A1405N-P2-210
Communication (Output, Digital): Modbus RTU (RS485)
Explosion protection: non Ex
Measurement Parameter: pH/ORP, Multiparameter, Oxygen, Conductivity
Sensor Connection: Digital, Memosens
MemoTrans
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens
902Cond
Explosion protection: non Ex
Measurement Parameter: Conductivity
902pH
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, ORP
904Cond
Explosion protection: non Ex
Measurement Parameter: Conductivity
904pH
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, ORP
904XCond
Explosion protection: Ex
Measurement Parameter: Conductivity
904XMULTI
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
904XpH
Explosion protection: Ex
Measurement Parameter: pH, pH/ORP, ORP
907MULTICond
Explosion protection: non Ex
Measurement Parameter: Multiparameter, Conductivity
Sensor Connection: Memosens | Analog
907MULTIOxy
Explosion protection: non Ex
Measurement Parameter: Multiparameter, Oxygen
Sensor Connection: Memosens | Analog
907MULTIpH
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens | Analog
907MULTICHANNELMS
Explosion protection: non Ex
Measurement Parameter: Multiparameter
Sensor Connection: Memosens
908MULTI
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive), pH, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens
4400 C
Explosion protection: non Ex
4400 S
Explosion protection: non Ex
4400 XC/24V
Explosion protection: Ex, hazardous area Zone 1
4400 XC/VPW
Explosion protection: Ex, hazardous area Zone 1
4400 XS/24V
Explosion protection: Ex, hazardous area Zone 1
4400 XS/VPW
Explosion protection: Ex, hazardous area Zone 1
2405 Cond
Explosion protection: NI Class I Div 2
Measurement Parameter: Conductivity
2405 CondI
Explosion protection: NI Class I Div 2
Measurement Parameter: Conductivity (inductive)
2405 Oxy
Explosion protection: NI Class I Div 2
Measurement Parameter: Oxygen
2405 pH
Explosion protection: NI Class I Div 2
Measurement Parameter: pH, pH/ORP, ORP
A402N
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
A405N
Communication (Output, Digital): Analog 4-20 mA
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive), pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens
E401N
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401N.010
Communication (Output, Digital): HART
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401N.020
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 4 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401N.030
Communication (Output, Digital): HART
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401X
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 2 Outputs
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401X.010
Communication (Output, Digital): HART
Current outputs: 2 Outputs
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401X.020
Communication (Output, Digital): Analog 4-20 mA
Current outputs: 4 Outputs
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E401X.030
Communication (Output, Digital): HART
Current outputs: 2 Outputs
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E461N
Communication (Output, Digital): PROFINET
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E461N.010
Communication (Output, Digital): PROFINET
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E471N
Communication (Output, Digital): EtherNet/IP
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
E471N.010
Communication (Output, Digital): EtherNet/IP
Current outputs: 2 Outputs
Explosion protection: non Ex
Measurement Parameter: pH, Multiparameter, Oxygen, ORP , Conductivity
A201N-CC-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Dual Conductivity
Sensor Connection: Analog
A201N-CC-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Dual Conductivity
Sensor Connection: Analog
A201X-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201X-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201B-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201B-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201N-COND-1
Communication (Output, Digital): HART
Current outputs: 2x 4 … 20 mA
Explosion protection: non Ex
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201N-COND-0
Communication (Output, Digital): HART
Current outputs: 1x 4 … 20 mA
Explosion protection: non Ex
Measurement Parameter: Conductivity
Sensor Connection: Analog
A201X-CONDI-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201X-CONDI-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201B-CONDI-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201B-CONDI-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201N-CONDI-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201N-CONDI-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Analog
A201X-MSCOND-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201X-MSCOND-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201B-MSCOND-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201B-MSCOND-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201N-MSCOND-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201N-MSCOND-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity
Sensor Connection: Memosens
A201X-MSCONDI-1
Communication (Output, Digital): HART
Current outputs: 2x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Memosens
A201X-MSCONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Memosens
A201B-MSCONDI-0
Communication (Output, Digital): HART
Current outputs: 1x 4 … 20 mA
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Memosens
A201N-MSCONDI-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Memosens
A201N-MSCONDI-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Conductivity (inductive)
Sensor Connection: Memosens
A201X-MSOXY-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Oxygen
Sensor Connection: Memosens
A201X-MSOXY-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Oxygen
Sensor Connection: Memosens
A201B-MSOXY-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Oxygen
Sensor Connection: Memosens
A201B-MSOXY-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Oxygen
Sensor Connection: Memosens
A201N-MSOXY-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Oxygen
Sensor Connection: Memosens
A201X-MSPH-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH/ORP
Sensor Connection: Memosens
A201X-MSPH-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH/ORP
Sensor Connection: Memosens
A201B-MSPH-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH/ORP
Sensor Connection: Memosens
A201B-MSPH-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH/ORP
Sensor Connection: Memosens
A201N-MSPH-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH/ORP
Sensor Connection: Memosens
A201N-MSPH-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, ORP
Sensor Connection: Memosens
A201X-OXY-1
Communication (Output, Digital): HART
Explosion protection: Ex
Measurement Parameter: Oxygen
Sensor Connection: Analog
A201X-OXY-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: Oxygen
Sensor Connection: Analog
A201B-OXY-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: Oxygen
Sensor Connection: Analog
A201N-OXY-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Oxygen
Sensor Connection: Analog
A201N-OXY-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: Oxygen
Sensor Connection: Analog
A201X-PH-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A201X-PH-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A201B-PH-1
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A201B-PH-0
Communication (Output, Digital): HART
Explosion protection: Ex, hazardous area Zone 2
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A201N-PH-1
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A201N-PH-0
Communication (Output, Digital): HART
Explosion protection: non Ex
Measurement Parameter: pH/ORP
Sensor Connection: Analog
A221N
Communication (Output, Digital): PROFIBUS
Current outputs: no mA output
Explosion protection: non Ex
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens | Analog
A221X
Communication (Output, Digital): PROFIBUS
Current outputs: no mA output
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens | Analog
A231N
Communication (Output, Digital): Foundation Fieldbus
Current outputs: no mA output
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens | Analog
A231X
Communication (Output, Digital): Foundation Fieldbus
Current outputs: no mA output
Explosion protection: Ex, hazardous area Zone 1
Measurement Parameter: pH, pH/ORP, Multiparameter, Oxygen, ORP , Conductivity
Sensor Connection: Memosens | Analog