The Mettler Toledo M300 Process 2-CH ½ DIN (4-Wire) is a two-channel, multiparameter transmitter for standard liquid process measurements.
It supports pH, ORP, dissolved oxygen, and conductivity sensors and is compatible with both conventional analog and digital ISM sensor technology.
Its enclosed ½ DIN configuration accommodates wall- or pipe-mounted installations where a larger, accessible operator interface is preferred.

A touchscreen display provides access to measurement values, setup functions, and available sensor information from one transmitter.
Key Characteristics
- Two-channel configuration for supported process analytical measurements
- Compatible with pH, ORP, dissolved oxygen, and conductivity sensors
- Supports both analog sensors and digital ISM sensors
- Touchscreen interface with a menu-based operating structure
- ½ DIN enclosure for wall- or pipe-mounted installation
- USB connectivity for data transfer and transmitter configuration
- Four-wire design for installation in non-hazardous process areas
Ideal Applications
- Two-channel pH, ORP, dissolved oxygen, or conductivity measurement
- Process installations requiring two supported analytical measurement points at one transmitter
- Wall- or pipe-mounted measurement locations requiring an enclosed transmitter
- Applications using analog sensors or digital ISM sensor technology
- Liquid process monitoring in chemical production, food and beverage processing, wastewater treatment, and other industrial operations
Parameters
- Conductivity
- Dissolved Oxygen
- Dissolved Ozone
- ORP
- pH
Communication
- None
Product Family Includes
- M300 Process 1-CH ¼ DIN (4-Wire)
- M300 Process 2-CH ¼ DIN (4-Wire)
- M300 Process 2-CH ½ DIN (4-Wire)
Industries Served
- Chemical Processes
- Food/Beverage Production
- Other Industrial Processes
- Other Water Processes
- Wastewater







