M2A
Stand Alone Transmitter
The RKI M2A??is a state-of-the-art transmitter that can operate as an independent, stand-alone monitor or as part of
an integrated system. The M2A connects with an analog or digital signal to virtually any controller, PLC, or DCS. Setup
procedures are simplified with user friendly push buttons and OLED menus. It utilizes a magnetic wand technique for
performing non-intrusive calibration. The M2A provides an automatic zero drift correction feature, which results in more
stable readings and reduces the need for adjustments due to sensor aging.
The housing of the M2A 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.