The Mettler Toledo M300 Water 1-CH ¼ DIN (4-Wire) is a single-channel analytical transmitter designed for water monitoring applications.
Its compact ¼ DIN panel-mount configuration supports installations where one water quality measurement point is required.
The transmitter works with compatible digital or analog sensors for pH/ORP, dissolved oxygen, dissolved ozone, or conductivity/resistivity measurement.
A touchscreen interface provides access to measurement information and transmitter configuration.

Key Characteristics
- Single-channel, 4-wire analytical transmitter
- Compact ¼ DIN configuration for panel-mounted installations
- Supports pH/ORP, dissolved oxygen, dissolved ozone, and conductivity/resistivity measurement
- Compatible with digital and analog sensor technologies
- Touchscreen interface for measurement display and transmitter setup
Ideal Applications
- Single-point water quality measurement in power generation facilities
- Water monitoring in pharmaceutical and chemical operations
- Panel-mounted water treatment and utility monitoring systems
- Applications requiring pH/ORP, dissolved oxygen, dissolved ozone, or conductivity/resistivity measurement
Parameters
- Conductivity
- Dissolved Oxygen
- Dissolved Ozone
- ORP
- pH
Communication
- None
Product Family Includes
- M300 Water 1-CH ¼ DIN (4-Wire)
- M300 Water 1-CH ½ DIN (4-Wire)
- M300 WaterC/R 2-CH ½ DIN (4-Wire)
Industries Served
- Chemical Processes
- Other Industrial Processes
- Other Water Processes
- Pharmaceutical Waters
- Power Plant Water/Steam
- Semiconductor Water
- Wastewater






