The Millennium II M21 Single Channel Transmitter is a universal fixed gas detection transmitter designed for reliable single-point gas monitoring in industrial and hazardous locations. Built for use with combustible and toxic gas sensors, the M21 supports infrared, catalytic bead, and electrochemical sensor technologies, making it a flexible solution for facilities that need dependable gas detection across a wide range of applications.
Designed for day-to-day stability in demanding environments, the M21 combines low power consumption, digital sensor communication, long-range sensor separation, and multiple output options in one rugged transmitter. Sensors are pre-calibrated and automatically recognized by the transmitter, allowing the correct gas curve and configuration profile to be uploaded quickly during setup.
With its full-character OLED display, non-intrusive menu access, event logging, and support for analog, relay, Modbus® RS485 RTU, and HART® communication options, the Millennium II M21 Transmitter helps simplify installation, calibration, and integration into both new and existing gas detection systems.
Available in BC, AB, and SK through Westech Industrial, the M21 is a strong choice for industrial facilities looking for a reliable single-channel gas detection transmitter backed by local technical support and service expertise.
Quantity
PRODUCT FEATURES
REQUEST FOR INFORMATION
Description
Universal Single-Channel Gas Monitoring
The Millennium II M21 Single Channel Transmitter supports fixed gas detection applications that require one dependable monitoring point. Its universal design gives operators flexibility across toxic and combustible gas detection needs. As a result, facilities can standardize one transmitter platform across multiple single-point applications.
Broad Sensor Compatibility
The M21 works with infrared, catalytic bead, and electrochemical sensor technologies. It also supports Net Safety SC3 Series combustible gas sensors and ST3 Series toxic gas sensors. Therefore, operators can match the transmitter to the gas hazards found at their site. This flexibility makes the M21 suitable for many industrial environments, from process areas to utility systems.
Smart Sensor Recognition
The transmitter automatically recognizes a newly connected sensor. Then, it uploads the correct gas curve and configuration profile. This feature helps simplify setup, reduce manual entry, and support more consistent installation. In addition, pre-calibrated sensors help streamline sensor replacement when maintenance teams need efficient turnaround.
Long-Range Sensor Separation
The M21 supports remote sensor separation of more than 2,000 ft / 600 m. Therefore, teams can install the sensor where detection matters most. Meanwhile, they can place the transmitter in a more accessible location. This design helps improve flexibility in hazardous, elevated, congested, or hard-to-reach areas.
Clear OLED Display and Easy Menu Navigation
The full graphic OLED display gives operators clear visibility in different lighting conditions. In addition, the menu supports English, French, Portuguese, and Spanish. Field teams can access setup, operation, and calibration functions through an intuitive interface. As a result, the transmitter helps reduce training time and supports easier day-to-day use.
Flexible Communication and Output Options
The M21 integrates with both legacy and modern fixed gas detection systems. It includes standard 4–20 mA analog output. Depending on the selected model, operators can also add relay outputs, Modbus® RS485 RTU, or HART® communication. Consequently, facilities can select a configuration that fits their control system requirements.
Low Power, Reliable Operation
The M21 uses low power while maintaining stable gas monitoring performance. Its wide voltage range also helps improve system compatibility in remote or power-limited installations. Furthermore, digital communication between the sensor and transmitter supports fast response times and reliable signal performance.
Built for Harsh Industrial Environments
The transmitter is available with aluminum or stainless steel enclosure options. It also supports surface mount, pipe mount, or duct mount installation. In addition, its environmental protection and hazardous location certification options support demanding industrial applications. Overall, the M21 provides a durable fixed gas detection solution for challenging operating conditions.
Applications
The Millennium II M21 Single Channel Transmitter is designed for fixed gas detection in industrial environments where combustible or toxic gas hazards may be present. Common applications include oil and gas facilities, chemical processing plants, mining operations, utilities, wastewater treatment facilities, industrial manufacturing sites, power generation facilities, and other hazardous locations requiring reliable single-point gas monitoring.
The M21 is well suited for applications where the sensor must be mounted remotely from the transmitter, where multiple communication options are required, or where an existing fixed gas detection system needs to be upgraded without a complete system redesign.
Documents
Manufacturer info
No matter how extreme or demanding the conditions, your people and facilities come first. That is why Emerson is dedicated to offering the most comprehensive and advanced flame and gas detection technologies available. Our flame and gas monitoring systems are designed to excel under the toughest conditions to help you streamline day-to-day operations and, more importantly, keep your people safe.
Website: https://www.emerson.com
