Mettler Toledo M400 Type 2 Transmitter (4-Wire)

The Mettler Toledo M400 Type 2 (4-Wire) is a single-channel, multi-parameter process transmitter for continuous liquid analysis.

It supports pH, ORP, conductivity, dissolved oxygen, optical dissolved oxygen, dissolved CO2, and dissolved ozone measurement when paired with a compatible sensor.

Mixed-mode sensor connectivity allows the transmitter to work with conventional analog sensors or digital ISM sensors.

The externally powered platform provides analog outputs and HART communication for integration with process monitoring and control systems.

Process Controls Corporation - Mettler Toledo M400 Type 2 Transmitter (4-Wire)

Key Characteristics

Four-wire, single-channel transmitter for online process measurement
Multi-parameter capability for pH, ORP, conductivity, dissolved oxygen, optical dissolved oxygen, dissolved CO2, and dissolved ozone
Supports compatible analog and digital ISM sensors
HART communication for integration with compatible control systems
Powered by 100–240 VAC or 20–30 VDC
Analog output and process-control functionality for industrial installations

Ideal Applications

Continuous pH and ORP measurement in liquid processes
Conductivity measurement for process and utility monitoring
Dissolved oxygen measurement in production and treatment processes
Dissolved CO2 or dissolved ozone measurement with compatible sensors
Installations transitioning between conventional analog and digital ISM sensor technologies
Process monitoring systems requiring externally powered transmitter operation and HART connectivity

Parameters

Conductivity
Dissolved CO2
Dissolved Oxygen
Dissolved Ozone
ORP
Optical DO
pH

Communication

HART

Product Family Includes

M400 Type 2 configurations for pH and ORP measurement
M400 Type 2 configurations for conductivity measurement
M400 Type 2 configurations for dissolved oxygen, optical dissolved oxygen, dissolved CO2, and dissolved ozone measurement