Stand Alone Explosion Proof Transmitter
M2A-XL Stand Alone Transmitter
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)
The RKI M2A-XL 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-XL 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-XL 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-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
The M2A-XL represents the latest leading edge technology in sensor / transmitters today.
Related Services
Fixed Systems Turnkey Solutions
- Design, Consultations, and Engineering
- Installation
- Start-up
- Training
- System Maintenance
- Petrochemical plants
- Refineries
- Water & wastewater treatment plants
- Pulp & paper mills
- Manufacturing facilities
- Automotive
- Semiconductor plants
- Chemical plants
Specifications - Explosion Proof Transmitters (Class I, Div. 1 , Groups B, C, D)
Combustibles LEL
H2 SpecificO2
OxygenH2S
Hydrogen SulfideCO
Carbon MonoxideCH4
MethaneHC
HydrocarbonsCO2
Carbon DioxideLEL PPM Part# UL 65-2640XL 65-2647XL 65-2641XL 65-2643XL-05 65-2645XL-05 65-2646XL-05 65-2649XL-CH4 65-2658XL-CH4
65-2649XL-HC 65-2660XL-02 65-2660XL-03
65-2660XL-05
65-2660XL-10
CSA 65-2640XL-05 65-2647XL-05 65-2641XL-05 Sensors Catalytic Galvanic cell Electrochemical Infrared Measuring Ranges 0 – 100% LEL 0 – 9000
ppmCH40 – 100%
LEL0 – 25.0% Vol. 0 – 100 ppm 0 – 300 ppm 0 – 100% LEL 0 – 100% Vol.
0 – 100% LEL -02 0 – 5000 ppm -03 -05
0 – 5% Vol. 0 – 50% Vol.
-10 0 – 100% Vol. Resolution 1% LEL 20 ppm 1% LEL 0.1% Vol. 1 ppm 1% LEL / 1% Vol. 20 ppm / 0.01% Vol / 0.1% Vol. / 1% Vol. Lower Detectable Limit (LDL) 2% of full scale 0.1% Vol. 2% of full scale Max Current Draw (24VDC) 160 mA with alarm 1 and alarm 2 active and all relays energized 125 mA with alarm 1 and alarm 2 active and all relays energized
160 mA with alarm 1 and alarm 2 active and all relays energized
Response Time (T-90) 35 Seconds or less 90 Seconds
or less60 Seconds
or less90 Seconds
or less30 Seconds or less Life Expectancy 2 to 3 years with normal service 3 to 5 years with normal service 2 to 3 years with normal service 5 years plus with normal service Accuracy
(which ever is greater)± 5% of reading or ± 2% LEL ± 0.5% Vol. O2 ± 5% of
reading or
± 2 ppm H2S± 5% of
reading or
± 5 ppm CO± 5% of reading or ± 2 % of full scale Weather Resistant Patented water repellent sensor coating Alarms Alarm Settings Two fully programmable alarm set points, increasing / decreasing, latching /
self-resetting, on delays, off delays, normally energized or de-energizedAlarm Indication Visual LEDs. Alarm 1, Amber; Alarm 2, Red; Fail, Red Relays 5 amp form ‘C’ contacts for alarm 1, alarm 2, and fail Physical Dimensions Height: 6.2” (158 mm), Width: 5.66” (144 mm), Depth: 4.86” (124 mm) Display Alphanumeric OLED display. 8 characters per line;
2 lines for gas concentration readout, plus user-friendly calibration and setupEnclosure Explosion proof for Class I, Div 1, Groups B, C, D. Enclosure Rating NEMA 4X, explosion proof, watertight, cast aluminum with o-ring seal and epoxy powder coating Controls Magnet used for calibration functions. Calibrates without opening the housing.
Internal push-button controls also available for calibration and setupOperating Environment Operating Temperature -40°F to 167°F -40°C to 75°C
-4°F to 122°F -20°C to 50°C
-40°F to 122°F -40°C to 50°C
-4°F to 122°F -20°C to 50°C
-40°F to 122°F -40°C to 50°C
Relative Humidity 5 – 95% RH non-condensing Location Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D. Operating Voltage 10 VDC – 30 VDC Outputs Analog Linear 4-20 mA signal, into 1000 ohms impedance max (24DC), 0 – 500 ohms max (12VDC) corresponding to 0 – full scale Digital Modbus RTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2k baud Approvals 65-2640XL
UL65-2641XL UL
C CSA US C UL US 65-2640XL-05
C CSA US65-2641XL-05
C CSA USControllers Beacon 110, Beacon 200, Beacon 410A, Beacon 800, Beacon 3200 as well as most DCS / PLC systems Warranty One year material and workmanship Specifications - Toxic Gas Transmitters (Class I, Div. 2)
O2
OxygenH2S
Hydrogen SulfideCO
Carbon MonoxideToxics CO2
Carbon DioxidePart# 65-2666XL *65-2644XL
65-2662XL 65-2663XL See Chart Below 65-2661XL-02 65-2661XL-03
65-2661XL-05
65-2661XL-10
Sensors Galvanic cell Electrochemical Infrared Measuring Ranges 0-25% Vol. 0-100 ppm 0-300 ppm See Chart Below -02 0 – 5000 ppm -03 -05
0 – 5% Vol. 0 – 50% Vol.
-10 0 – 100% Vol. Resolution 0.1% Vol. 1 ppm See Chart Below 20 ppm / 0.01% Vol. / 0.1% Vol. / 1%Vol. Lower Detectable Limit (LDL) 0.1% Vol. 2% of full scale Response Time (T-90) 35 Seconds or less 60 Seconds or less 30 Seconds or less Max Current Draw (24VDC) 125 mA with alarm 1 and alarm 2 active and all relays energized 160 mA with alarm 1 and alarm 2 active and all relays energized Life Expectancy 2 to 3 years with normal service 5 years plus Accuracy
(which ever is greater)± 0.5% Vol. O2 ± 5% of reading or
± 2 ppm H2S± 5% of reading or
± 5 ppm CO± 10% of reading or
± 5% of full scale± 5% of reading or
± 2% of full scaleAlarms Alarm Settings Two fully programmable alarm set points, increasing / decreasing, latching / self-resetting, on delays, off delays, normally energized or de-energized, Alarm Indication Visual LEDs. Alarm 1=Amber; Alarm 2=Red; Fail=Red Relays 5 Amp form ‘C’ contacts for alarm 1, alarm 2, and fail Physical Dimensions Height: 6.2” (158 mm), Width: 5.66” (144 mm), Depth: 4.86” (124 mm) Display Alphanumeric OLED display. 8 characters per line; 2 lines for gas concentration readout, plus user-friendly calibration and setup Sensor Rating Non explosion proof construction, designed for Class I, Div. 2, Groups B, C, D (no certification) Housing J-Box NEMA 4X, explosion proof, watertight, cast aluminum with o-ring seal and epoxy powder coating Controls Magnet used for calibration functions. Calibrates without opening the housing. Internal push-button controls also available for calibration and setup Sensor Aluminum / Plastic (non explosion proof) Operating Environment Operating Temperature -4°F to 113°F -20°C to 45°C
-40°F to 104°F -40°C to 40°C
23°F to 104°F -5°C to 40°C
14°F to 104°F -10°C to 40°C
-40°F to 122°F -40°C to 50°C
Relative Humidity 5 – 95% RH non-condensing Location Indoor or outdoor Operating Voltage 10 VDC – 30 VDC Outputs Analog Linear 4-20 mA signal, into 1000 ohms impedance max (24DC), 0 – 500 ohms max (12VDC) corresponding to 0 – full scale Digital Modbus RTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2k baud Controllers Beacon 110, Beacon 200, Beacon 410A, Beacon 800, Beacon 3200 as well as most DCS / PLC systems Warranty One year materials and workmanship M2A-XL Toxic Transmitter Sensor Ordering Information Part Number With J-Box Gas Range Resolution Sensor Type 65-2670XL-NH3-75 Ammonia (NH3) 0 – 75.0 ppm 0.1 ppm CT-7 65-2670XL-NH3-1 Ammonia (NH3) 0 – 100 ppm 1 ppm CT-7 65-2670XL-NH3-2 Ammonia (NH3) 0 – 200 ppm 1 ppm CT-7 65-2670XL-NH3-5 Ammonia (NH3) 0 – 500 ppm 1 ppm CT-7 65-2648XL-AsH3 Arsine (AsH3) 0 – 1.50 ppm 0.1 ppm ESM -01 65-2670XL-CL2-3 Chlorine (Cl2) 0 – 3.00 ppm 0.01 ppm CT-7 65-2670XL-CL2-5 Chlorine (Cl2) 0 – 5.00 ppm 0.01 ppm CT-7 65-2670XL-CL2-10 Chlorine (Cl2) 0 – 10.0 ppm 0.1 ppm CT-7 65-2670XL-CLO21 Chlorine Dioxide (ClO2) 0 – 1.00 ppm 0.01 ppm CT-7 65-2670XL-CLO21 Chlorine Dioxide (ClO2) 0 – 1.00 ppm 0.01 ppm CT-7 65-2670XL-CLO23 Chlorine Dioxide (ClO2) 0 – 3.00 ppm 0.01 ppm CT-7 65-2670XL-CLO25 Chlorine Dioxide (ClO2) 0 – 5.00 ppm 0.01 ppm CT-7 65-2670XL-HCN15 Hydrogen Cyanide (HCN) 0 – 15.0 ppm 0.1 ppm CT-7 65-2670XL-NO2 Nitrogen Dioxide (NO2) 0 – 15.0 ppm 0.1 ppm CT-7 65-2648XL-PH3 Phosphine (PH3) 0 – 1.00 ppm 0.01 ppm ESM -01 65-2670XL-SO210 Sulfur Dioxide (SO2) 0 – 6.00 ppm 0.01 ppm CT-7 M2A-XL Literature
Product Datasheet Operating Manuals M2A-XL Datasheet M2A-XL Operator’s Manual