Mettler Toledo M400 2XH Type 3 ISM Transmitter (2-Wire)

The Mettler Toledo M400 2XH Type 3 ISM is a single-channel, 2-wire process transmitter designed for digital ISM sensors and intrinsically safe installations.

Its multi-parameter capabilities support pH/ORP, pH/pNa, conductivity, dissolved oxygen, gas-phase oxygen, optical oxygen, and dissolved CO2 measurement with compatible sensors.

The transmitter combines HART communication with process-control and sensor-management functions in a ½ DIN enclosure.

ISM capabilities provide access to sensor identification, operating status, calibration scheduling, and maintenance information through the transmitter interface.

Process Controls Corporation - Mettler Toledo M400 2XH Type 3 ISM Transmitter (2-Wire)

Key Characteristics

- Single-channel, 2-wire transmitter for compatible digital ISM sensors
- Intrinsically safe configuration for approved hazardous-area installations
- Supports pH/ORP, pH/pNa, conductivity, dissolved oxygen, gas-phase oxygen, optical oxygen, and dissolved CO2 measurement
- HART communication with two 4–20 mA current outputs
- PID control and two open-collector digital outputs
- ISM functions include Plug and Measure, Dynamic Lifetime Indicator, Adaptive Calibration Timer, and Time to Maintenance
- ½ DIN die-cast aluminum enclosure with IP66 protection

Ideal Applications

- - Chemical process measurement using digital analytical sensors
  - Pharmaceutical and biotechnology process analytics with compatible ISM sensors
  - Hazardous-area measurement loops requiring an intrinsically safe, 2-wire transmitter
  - Gas-phase or dissolved oxygen measurement applications
  - Single-point pH/ORP, conductivity, oxygen, or dissolved CO2 monitoring
  - Process installations requiring HART communication and access to ISM sensor information