The Mettler Toledo M800 Process 4-CH is a four-wire, multi-parameter transmitter designed to manage as many as four compatible analytical sensors through one operating platform.
It supports process measurements including pH/ORP, conductivity, dissolved oxygen, dissolved carbon dioxide, and turbidity.
A 5.7-inch color touchscreen provides access to measurement values, configuration settings, and sensor information.
Compatibility with Intelligent Sensor Management (ISM) technology also gives operators access to predictive sensor diagnostics where supported by the connected sensors.

Key Characteristics
- Four-channel configuration for connecting and monitoring as many as four compatible process sensors
- Multi-parameter measurement support for pH/ORP, conductivity, dissolved oxygen, dissolved carbon dioxide, and turbidity
- 5.7-inch color touchscreen for measurement display, configuration, and navigation
- Compatibility with digital ISM sensors and associated sensor diagnostic information
- Four-wire design for installations using an external AC or DC power supply
- Configurable analog and relay outputs for integration with process control systems
Ideal Applications
- Multi-point process analytics requiring several measurements to be consolidated into one transmitter
- Process monitoring involving pH/ORP, conductivity, dissolved oxygen, dissolved carbon dioxide, or turbidity
- Installations requiring simultaneous connection of as many as four compatible analytical sensors
- Applications that benefit from touchscreen access to measurement, setup, and sensor diagnostic information
- Integration of analytical measurements with plant monitoring or process control systems
Parameters
- Conductivity
- Dissolved CO2
- Dissolved Oxygen
- Gas-Phase Oxygen
- ORP
- Optical DO
- pH
Communication
- None
Product Family Includes
- M800 Process 1-CH (4-Wire)
- M800 Process 2-CH (4-Wire)
- M800 Process 4-CH (4-Wire)
Industries Served
- Chemical Processes
- Other Industrial Processes
- Other Water Processes
- Wastewater







