The housing of the M2A-XL does not need to be opened for zeroing or calibration, making it unnecessary to declassify the area for routine maintenance. It is designed so that a complete field calibration can be performed by one person. Sensor construction is rated Class I, Div. 1 Groups B, C, D for flammables, CO, H2S, O2, and CO2, and Class I, Div. 2 for all other toxics.

The transmitter provides a 4-20 mA output in addition to a Modbus digital output. It also has two levels of alarms with relays, plus a fail alarm with relay. A digital display of the gas concentration, as well as alarm and status lights, can be viewed through the front window.

The toxic sensors are electrochemical type plug-in sensors, which provide high specificity, fast response, and long life. The plug-in design allows quick replacement in the field with no tools required. Toxic sensors are designed for use in Class I, Div. 2 hazardous locations. Sensors available for NH3, AsH3, Cl2, ClO2, HCN, PH3, NO2 and SO2.

Features

• Operates with or without a controller
• Direct digital readout with OLED cold temperature display
• Available gases include
     • LEL, O2, H2S, CO, CO2, and 100% Vol CH4
     • Toxic gases include NH3, AsH3, Cl2, ClO2, HCN, NO2, & SO2
• Infrared sensor for combustibles and CO2
• 4-20 mA & digital Modbus outputs standard
• 2 fully programmable alarm relays & fail relay
• Non-intrusive calibration via magnetic wand
• Explosion proof construction
• Patented water repellent sensor cover
• User friendly setup, push buttons & OLED menus
• Long-life sensors (2 + years typical)

• Low Cost of Ownership
• RKI instruments are designed to deliver reliable performance while minimizing long-term costs.
   Their low cost of ownership comes from a combination of durability, efficiency, and ease of maintenance.
• Long sensor lifespan
• Sensors 3 year warranty
• Perform Better than the Competition
• Minimal maintenance requirements
• User friendly replaceable parts
• Energy efficiency
• Durable construction
• Reduced calibration costs