Mettler Toledo M400 2-Wire Analytical Multiparameter Transmitter
1/2 DIN, single-channel, two-wire multiparameter transmitter and PID controller for pH, ORP, oxygen, conductivity, dissolved carbon dioxide, inductive conductivity and ozone measurement. Accepts input from analog and digital (ISM) sensors. NEMA 4X/IP66 diecast aluminum enclosure with backlit 4-line LCD display.
The M400 analytical transmitter accepts mixed-mode inputs from analog and Intelligent Sensor Management (ISM) sensors for pH, ORP, oxygen, conductivity, dissolved carbon dioxide, inductive conductivity, and ozone. Its rugged design and global hazardous area approvals allow use of the transmitter across the chemical and chem-pharma industries.
With the Plug and Measure feature, the M400 offers fast commissioning and error-free start-up. You can also get remote access and advanced sensor diagnostic tools with HART®, Foundation Fieldbus™, and Profibus PA® communication protocols. The M400 comes with advanced ISM functionallity for predictive maintenance.
- Analog or digital ISM sensors accepted; Analog sensor cable length to 65ft (20m), ISM to 260 ft (80m)
- Compatible with optical dissolved oxygen sensors
- 4-20 mA analog input signal for pressure compensation
- Communication protocols: 4 to 20 mA (with HART), Foundation Fieldbus, Profibus PA
- PID process controller for pulse length, pulse frequency
- Backlit 4-line LCD display
- Power: 14 to 30 VDC
- NEMA 4X/IP66 diecast aluminum 1/2 DIN enclosure with five tactile feedback keys
- Approvals: NEPSI, ATEX / IECEx Zone1, cFMus Cl1 Div1
| Parameter | Range |
| pH | -2.00 to 20.00 |
| mV | -1500 to 1500 |
| Temperature | -22° to 266° F (-30° to 130° C) |
| Dissolved Oxygen Saturation | 0 to 500% Air, 0 to 200% O2 |
| Dissolved Oxygen Concentration | 0 ppb to 50.00 ppm |
| Oxygen in Gas | 0 to 9999 ppm O2 gas 0 to 100% volume %O2 |
| Optical Dissolved Oxygen Concentration | 0.1 ppb to 50.00 ppm |
| Optical Dissolved Oxygen Range | 0 to 500% Air, 0 to 100% O2 |
| Dissolved Carbon Dioxide (CO2 Low) | 0 to 5000 mg/L, 0 to 200% Sat, 0 to 1500 mmHg, 0 to 2000 mBar, 0 to 2000 hPa |
| Thermal Conductivity (Profibus PA) | 0 to 145 psi p (CO2), 0 to 10 bar p (CO2), 0 to 15 g/L, 0 to 7 V/V CO2 |
| Dissolved Ozone (Profibus PA) | 0.1 ppb to 5.00 ppm |
| Conductivity 2-e/4-e | 0.2 to 2,000 μs/cm C=0.001: 0.002 to 200 μs/cm C=0.1: 0.02 to 2000 μs/cm C=1: 15 to 4000 μs/cm C=3: 15 to 12000 μs/cm C=10: 10 to 40000 μs/cm |
