The Mettler Toledo M300 is a two-channel, 1/2 DIN multi-parameter transmitter engineered for industrial water quality monitoring. It delivers simultaneous measurement of conductivity, resistivity, pH, ORP, dissolved oxygen, and dissolved ozone through a high-contrast touchscreen interface. The instrument supports both analog and digital ISM (Intelligent Sensor Management) sensors, enabling predictive diagnostics and adaptive maintenance scheduling across multiple water analysis parameters.
Technical Specifications
Measurement Capability
• Conductivity, resistivity, pH, ORP, dissolved oxygen, dissolved ozone
• Two independent channels
• Touchscreen display: high-contrast, black-and-white, 4-line text
• Menu-driven operation with selectable language support (10 languages: English, German, French, Italian, Spanish, Portuguese, Russian, Japanese, Korean, Chinese)
Sensor Interface
• Mixed-mode inputs: analog or ISM digital sensors
• ISM predictive diagnostics: Dynamic Lifetime Indicator (DLI), Adaptive Calibration Timer (ACT), Time To Maintenance (TTM)
• One-point, two-point, and process calibration modes with buffer selection options
Outputs
• Four 0/4–20 mA current outputs, galvanically isolated (2-channel version)
• 22 mA alarm output available
• Four freely configurable relays with setpoint, delay (10 seconds), and hysteresis (5%) control
Environmental
• Operating temperature: –10 to 50 °C
• Storage temperature: –40 to 70 °C
• Relative humidity: 0 to 95%
• IP 65 rated (rear for 1/2 DIN enclosure)
Power & Compliance
• 100–240 V AC (50–60 Hz) or 20–30 V DC; 10 VA consumption
• CE compliant; UL Listed (US and Canadian standards)
– Key Features
• Harmonized menu structure across all parameters for efficient navigation
• USB port for configuration, data logging, and firmware updates
• Transmitter Configuration Tool (TCT) software support and USB stick configuration
• Galvanically isolated analog outputs for noise-free signal transmission
– Compatibility & Integration
The M300 accepts both conventional analog instrumentation and ISM-enabled digital sensors, supporting mixed deployments within the same system. Configuration flexibility via touchscreen, PC software, or USB stick enables rapid integration into existing water treatment and process control systems.
