Reliable, flexible analytical transmitters for process measurement

Whether you’re feeding 4…20 mA loops, integrating digital protocols, or monitoring multiple parameters simultaneously, our transmitters deliver precision, diagnostics, and rugged performance to your analytical measurement loop.

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Stratos Multi Transmitte

Stratos Multi

Multi-Parameter Transmitter for pH, ORP, Conductivity & Oxygen
The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
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The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
Protos II 4400

Protos II 4400

Modular 4-wire, Multi-parameter Transmitter
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
Learn More
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
MemoRail Memosens Transmitter

MemoRail

DIN Rail-Mounted, Multi-parameter Memosens Transmitter
The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
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The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
Stratos Pro A2 Transmitter

Stratos Pro A2

2-wire, loop-powered Memosens or Analog Transmitter
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Memorail Modbus Transmitter

MemoRail Modbus

DIN Rail-Mounted Memosens Transmitter with Modbus RTU
The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
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The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
Memotrans

MemoTrans

Ultra-Compact Memosens Transmitter
The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
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The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
Stratos Evo Transmitter

Stratos Evo

2-Channel Transmitter for pH, ORP, Conductivity & Oxygen
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
Learn More
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
Stratos MS Memosens Transmitter

Stratos MS

Basic Memosens Multi-parameter Transmitter

The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

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The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

Stratos Eco Transmitter

Stratos Eco

4-Wire Analog Transmitter

The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

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The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

Transmitters 
 
Stratos Multi Transmitte

Stratos Multi

Multi-Parameter Transmitter for pH, ORP, Conductivity & Oxygen
The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
Learn More
The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
The Stratos Multi is the most versatile and flexible analytical transmitter on the market for pH, ORP, conductivity, resistivity, concentration & oxygen.    
Protos II 4400

Protos II 4400

Modular 4-wire, Multi-parameter Transmitter
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
Learn More
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
Protos II 4400 (X) is a flexible, 4-wire transmitter for pH, ORP, conductivity, and oxygen. Protos II allows for monitoring and controlling processes even in complex and hazardous area applications.
  • Mix and match measuring, control, and communication modules
  • Intuitive user interface guides users through menus and provides measurement and troubleshooting tips
MemoRail Memosens Transmitter

MemoRail

DIN Rail-Mounted, Multi-parameter Memosens Transmitter
The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
Learn More
The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
The low-cost MemoRail is a DIN rail-mounded, digital analyzer for measuring pH, ORP, conductivity, oxygen, and temperature with Memosens® sensors.
Stratos Pro A2 Transmitter

Stratos Pro A2

2-wire, loop-powered Memosens or Analog Transmitter
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Memorail Modbus Transmitter

MemoRail Modbus

DIN Rail-Mounted Memosens Transmitter with Modbus RTU
The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
Learn More
The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
The MemoRail Modbus is a DIN rail-mounded, analyzer for measuring pH, ORP, conductivity, and oxygen.
Memotrans

MemoTrans

Ultra-Compact Memosens Transmitter
The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
Learn More
The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
The MemoTrans transmitter is a two-wire multi-parameter device for measuring pH, ORP, conductivity, or dissolved oxygen. 
Stratos Evo Transmitter

Stratos Evo

2-Channel Transmitter for pH, ORP, Conductivity & Oxygen
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
Learn More
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
The Stratos Evo analyzer is a 4-wire multi-parameter device for measuring pH, ORP, conductivity (conductive or inductive), or dissolved oxygen.
Stratos MS Memosens Transmitter

Stratos MS

Basic Memosens Multi-parameter Transmitter

The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

Learn More

The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

The Stratos MS analyzer is a basic multi-parameter device for Memosens pH, ORP, conductivity, or dissolved oxygen sensors.

Stratos Eco Transmitter

Stratos Eco

4-Wire Analog Transmitter

The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

Learn More

The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

The Stratos Eco analyzer is a basic device for analog pH, ORP, conductivity, or dissolved oxygen sensors.

Turn sensor diagnostics into actionable insight​

Even the best sensors can drift, foul, or fail over time but without the right visibility, those issues often go unnoticed until they impact your process. Modern analytical transmitters provide advanced diagnostics that go beyond basic measurement, allowing you to monitor sensor condition, detect performance changes, and make informed maintenance decisions before problems escalate. With access to real diagnostic data, operators can determine when to clean, calibrate, or replace sensors with confidence, improving uptime and measurement reliability.

Multi-parameter measurement for complete process insight​

Our analytical transmitters convert sensor measurements into actionable process data you can trust. From single measurement parameters to multi-parameters, our transmitters are designed to handle:

  • pH
  • ORP
  • Conductivity
  • Cat-Ion Conductivity
  • Resistivity
  • Concentration
  • Total Dissolved Solids
  • Dissolved Oxygen
  • Oxygen Saturation

The Right Transmitter for your Application

Need help selecting the right transmitter or matching to your sensors and control system? Check our downloads library for manuals & selection guides, or contact technical support for personalized assistance.