Mettler Toledo M400 2XH Type 2 ISM Transmitter (2-Wire)

The M400 2XH Type 2 ISM is a single-channel, 2-wire multiparameter transmitter designed for use with compatible digital ISM sensors in demanding process environments.

Its aluminum enclosure and hazardous-area approvals support installation where robust process instrumentation and intrinsic safety are required.

The transmitter supports pH/ORP, pH/pNa, four-electrode conductivity, amperometric dissolved oxygen, optical dissolved oxygen, and dissolved carbon dioxide measurement.

HART communication provides access to measured values, device information, and ISM sensor diagnostic data through compatible asset-management systems and field communicators.

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

Key Characteristics

Single-channel, 2-wire configuration for digital ISM sensors
Supports pH/ORP, pH/pNa, four-electrode conductivity, amperometric dissolved oxygen, optical dissolved oxygen, and dissolved CO2 measurement
HART communication for measured values, device information, sensor diagnostics, and supported remote instrument functions
Two isolated 4–20 mA current outputs and two open-collector digital outputs
Four-key interface with a 4.4-inch display and multilingual operation
Aluminum die-cast enclosure rated IP66/NEMA 4X
Hazardous-area certifications for designated Zone 1, Zone 21, and Class I Division 1 installations

Ideal Applications

Chemical process measurements in hazardous or demanding industrial environments
Pharmaceutical process analytics using compatible ISM sensors
pH, ORP, conductivity, and dissolved oxygen measurement in process vessels and piping systems
Dissolved CO2 measurement with compatible pharmaceutical process sensors
Installations requiring 2-wire loop power and HART communication
Applications where ISM sensor identification and diagnostic information are incorporated into the measurement system