Stand Alone Explosion Proof Transmitter
M2A DETECTOR HEAD - CALL FOR PRICING
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 original M2A has been replaced with the M2A-XL Stand Alone Transmitter. The M2A-XL has an alternate housing, which is slightly taller, wider and deeper, but the electronics and operation are the same as the original M2A housing. Since this housing is deeper than the original M2A, longer standoffs are required inside to properly bring the display up to the transmitter’s window.
Changes related to using the new, alternate housing are outlined below:
M2A-XL is the new model name for the original M2As installed in the larger housing. The new model name is visible on the label around the display.
The Manual is different. The dimensional drawings have been revised to reflect the larger enclosure.
New part numbers are utilized for the M2A-XL. The letters “XL” are replacing the “RK” within the former M2A part #’s.
Inside the M2A-XL the electronics and operation are exactly the same as the original M2A. The only difference is the larger enclosure.
The original M2A has been discontinued. As a result, the original M2A sections of the current price book were removed and replaced with the M2A-XL price list sections.
For more information and ordering, please see M2A-XL Stand Alone Transmitter
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 Specific
O2 Oxygen
H2S Hydrogen Sulfide
CO Carbon Monoxide
CH4 Methane
HC Hydrocarbons
CO2 Carbon Dioxide
LEL
PPM
Part#
UL
65-2640RK
65-2647RK
65-2641RK
65-2643RK-05
65-2645RK-05
65-2646RK-05
65-2649RK-CH4
65-2658RK-CH4
65-2649RK-HC
65-2660RK-02
65-2660RK-03
65-2660RK-05
65-2660RK-10
CSA
65-2640RK-05
65-2647RK-05
65-2641RK-05
Sensors
Catalytic
Galvanic cell
Electrochemical
Infrared
Measuring Ranges
0 – 100% LEL
0 – 9000 ppmCH4
0 – 100% LEL
0 – 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 less
60 Seconds or less
90 Seconds or less
30 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% of full scale
± 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-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: 8.5” (215 mm), Width: 5.2” (132 mm), Depth: 4.5” (114 mm)
Display
Alphanumeric OLED display. 8 characters per line; 2 lines for gas concentration readout, plus user-friendly calibration and setup
Enclosure
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 setup
Operating Environment
Operating Temperature
-40°F to 167°F
-40°C to 75°C
-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
-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
C CSA US
65-2640RK-05 C CSA US
65-2641RK-05 C CSA US
Controllers
Beacon 110, Beacon 200, Beacon 410A, Beacon 800 as well as most DCS / PLC systems
Warranty
One year material and workmanship
Specifications - Toxic Gas Transmitters (Class I, Div. 2)
O2 Oxygen
H2S Hydrogen Sulfide
CO Carbon Monoxide
Toxics
CO2 Carbon Dioxide
Part#
65-2666RK
*65-2644RK
65-2662RK
65-2663RK
See Chart Below
65-2661RK-02
65-2661RK-03
65-2661RK-05
65-2661RK-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 scale
Alarms
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: 8.5” (215 mm), Width: 5.2” (132 mm), Depth: 4.5” (114 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 as well as most DCS / PLC systems
Warranty
One year materials and workmanship
Part Number With J-Box
Gas
Range
Resolution
Sensor Type
65-2670RK-NH3-75
Ammonia (NH3)
0 – 75.0 ppm
0.1 ppm
CT-7
65-2670-NH3-1
Ammonia (NH3)
0 – 100 ppm
1 ppm
CT-7
65-2670-NH3-2
Ammonia (NH3)
0 – 200 ppm
1 ppm
CT-7
65-2670-NH3-5
Ammonia (NH3)
0 – 500 ppm
1 ppm
CT-7
65-2670-NO2
Nitrogen Dioxide (NO2)
0 – 15.0 ppm
1 ppm
CT-7
65-2648RK-AsH3
Arsine (AsH3)
0 – 1.50 ppm
0.1 ppm
ESM -01
65-2670RK-CL2-3
Chlorine (Cl2)
0 – 3.00 ppm
0.01 ppm
CT-7
65-2670RK-CL2-10
Chlorine (Cl2)
0 – 10.0 ppm
0.1 ppm
CT-7
65-2670RK-CLO2
Chlorine Dioxide (ClO2)
0 – 1.00 ppm
0.01 ppm
CT-7
65-2648RK-HCN
Hydrogen Cyanide (HCN)
0 – 15.0 ppm
0.1 ppm
ESM -01
65-2648RK-PH3
Phosphine (PH3)
0 – 1.00 ppm
0.01 ppm
ESM -01
65-2648RK-SO2
Sulfur Dioxide (SO2)
0 – 6.00 ppm
0.01 ppm
ESM -01
M2A Literature
Product Datasheet
Operating Manuals
M2A Datasheet
M2A Operator’s Manual
Spanish M2A Datasheet
Spanish M2A Manual
