The Mettler Toledo M300 Process 2-CH ¼ DIN (4-Wire) is a two-channel, multiparameter transmitter for analytical measurement in standard process applications.
It supports compatible pH, ORP, dissolved oxygen, and conductivity sensors, allowing two process measurements to be managed through one transmitter.
Designed for panel-mounted installations, the compact ¼ DIN transmitter features a touchscreen interface for viewing measurement data and navigating instrument settings.

Compatibility with analog and ISM sensor technology provides flexibility when selecting sensors for different process measurement requirements.
Key Characteristics
- Two-channel, multi-parameter configuration for pH, ORP, dissolved oxygen, and conductivity measurement
- Compatible with both analog and ISM sensor technology
- Touchscreen interface for measurement display, setup, and operation
- Access to ISM predictive diagnostics when used with compatible ISM sensors
- Compact ¼ DIN format for panel-mounted installations
Ideal Applications
- Simultaneous monitoring of two analytical measurement points or process parameters
- Process installations using pH, ORP, dissolved oxygen, or conductivity sensors
- Panel-mounted process measurement and control systems requiring a compact transmitter
- Applications transitioning between compatible analog and digital ISM sensor technologies
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







