Transmitters for analytical measurements are usually chosen separately from the sensor. With ever-growing functionality, selecting the right field device is no longer just a matter of process variable, power requirements or output signal. Find out how a structured approach to selecting a measurement system helps you select the right instrument.

M800 Multi-channel Transmitter | M400 Process Transmitter | M300 Process & Water Transmitters |
For process and water applications, this multi-parameter transmitter offers installation flexibility, operational security and simplifies process control measurements. | For a wide range of applications and industries, this analytical transmitter combines high performance with ease of use and offers outstanding process reliability and safety. | For a wide range of applications and industries, this analytical transmitter combines high measurement performance and ease of use with excellent user ergonomics. |
Offers 1, 2 or 4 channels & multi-parameter control Monitors pH/ORP, O2, CO2, conductivity and turbidity Water version includes TOC, ozone and flow Simplifies operation through intuitive user interface Full-color touchscreen for easy control | Offers 1 channel & multi-parameter control Monitors pH/ORP, dissolved O2, CO2, gas O2, conductivity, all TDL parameters HART, Foundation Fieldbus, PROFIBUS PA Real-time sensor diagnostics with ISM Touch-screen and soft-key operation | Offers 1 or 2 channels & multi-parameter control Monitors pH/ORP, dissolved O2 & O3, resistivity and conductivity 1/4 DIN and 1/2 DIN Real-time sensor diagnostics with ISM Touchscreen for easy control |
M200 Analytical Transmitter | M100 Compact Transmitters | Modular Transmitter M700 |
For basic process and water applications, this transmitter offers an exceptionally easy to use interface, reliable operation, and simplified commissioning and maintenance. | For standard monitoring applications, this compact transmitter offers a versatile measurement solution for both hazardous and non-hazardous area installations. | This modular transmitter offers flexible use of plug-in modules which enable combined measurements from digital and analog sensors, with a choice of bus communication. |
Offers 1 or 2 channels & multi-parameter control Monitors pH/ORP, dissolved O2 & O3, conductivity, flow 1/4 DIN and 1/2 DIN Plug and Measure for fast sensor installation Low installation costs for basic measurement | Offers 1 channel & multi-parameter control Monitors pH/ORP, dissolved O2, CO2, conductivity HART communication on most models Analog output / Bluetooth 4.0 / Digital MODBUS RTU Low installation costs | Offers 1 or 2 channel & multi-parameter control Monitors pH/ORP, dissolved/gas O2, CO2, conductivity Profibus PA, Foundation Fieldbus Polished stainless steel Ex approved, ATEX Zone1 |
For process and water applications, this multi-parameter transmitter offers installation flexibility, operational security and simplifies process control measurements.
For a wide range of applications and industries, this analytical transmitter combines high performance with ease of use and offers outstanding process reliability and safety.
For a wide range of applications and industries, this analytical transmitter combines high measurement performance and ease of use with excellent user ergonomics.
For basic process and water applications, this transmitter offers an exceptionally easy to use interface, reliable operation, and simplified commissioning and maintenance.
For standard monitoring applications, this compact transmitter offers a versatile measurement solution for both hazardous and non-hazardous area installations.
This modular transmitter offers flexible use of plug-in modules which enable combined measurements from digital and analog sensors, with a choice of bus communication.
Publications
How to Select a Process Analytical Transmitter

Family Flyer of Intelligent Transmitter Series
METTLER TOLEDO provides tailorable transmitter solutions to meet requirements of a wide range of applications. The transmitter series cover pH/ORP, oxygen, dissolved carbon dioxide and conductivity measurements. The transmitters are compatible with traditional analog as well as digital sensors.

Process Analytics Product Catalog
The Process Analytics catalog includes product features and specifications, benefits and recommended application areas, order details and much more for process analytics measurement solutions. You will find the information you need quickly and easily.
Services
Explore our Services - Tailored to Fit your needs
We support and service your instruments through its entire life-cycle, from installation to preventive maintenance and calibration to equipment repair.
Training & Consulting

Videos
Video on the Next Generation of M400 Transmitters
The video introduces the new version of the METTLER TOLEDO multi-parameter M400 transmitter series for process analytics applications. It features a combined touchscreen and tactile soft key user interface. The high contrast screen permits viewing in all light conditions and the soft keys allow operation even if protective gloves are being worn. The transmitter is compatible with both, digital and analog sensors.
Multi-Channel and Multi-Parameter Transmitter Improves Water Chemistry
The M800 transmitter with multi-channel and multi-parameter flexibility is easy to configure and enables greater operational insights into the water chemistry relationships. The transmitter can display up to eight parameters simultaneously.
Head Mount Transmitter with Big Possibilities
The video shows how the Head Mount Transmitter requires neither a display nor a local operator interface. It is very compact and has a single-channel, multi-parameter unit for pH, ORP, conductivity and dissolved oxygen measurements.