General Specifications Explosion Proof
	Combustibles LEL	Combustibles PPM	LEL H2 Specific
Part Number UL	65-2640RK	65-2647RK	65-2641RK
Part Number LEL	65-2640RK-05	65-2647RK-05	65-2641RK-05
Sensors	Catalytic	Catalytic	Catalytic
Measuring Ranges	0 - 100% LEL	0 - 9000 ppm CH4	0 - 100% LEL
Resolution	1% LEL	20 ppm	1% LEL
Lower Detectable Limit (LDL)	2% of full scale	2% of full scale	2% of full scale
Max Current Draw (24VDC)	160 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	160 mA with alarm 1 and alarm 2 active and all relays energized
Response Time (T-90)	35 Seconds or less	35 Seconds or less	35 Seconds or less
Life Expectancy	2 to 3 years with normal service	2 to 3 years with normal service	3 to 5 years with normal service
Accuracy (which ever is greater)	± 5% of reading or ± 2% of full scale	± 5% of reading or ± 2% of full scale	± 5% of reading or ± 2% of full scale
Weather Resistant	Patented water repellent sensor coating	Patented water repellent sensor coating	Patented water repellent sensor coating

General Specifications Explosion Proof cont.
	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	CH4 Methane	HC Hydrocarbons	CO2 LEL PPM Carbon Dioxide
Part Number	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
Sensors	Galvanic cell	Electrochemical	Electrochemical	Infrared	Infrared	Infrared
Measuring Ranges	0 - 25.0% Vol.	0 - 100 ppm	0 - 300 ppm	0 - 100% LEL 0 - 100% Vol	0 - 100% LEL	-02 0 - 5000 ppm, -03 0-5% Vol., -05 0 - 50% Vol., -10 0 - 100% Vol.
Resolution	0.1% Vol.	1 ppm	1 ppm	1% LEL / 1% Vol.	1% LEL / 1% Vol.	20 ppm / 0.01% Vol / 0.1% Vol. / 1% Vol.
Lower Detectable Limit (LDL)	0.1% Vol.	2% of full scale	2% of full scale	2% of full scale	2% of full scale	2% of full scale
Max Current Draw (24VDC)	125 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	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	160 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)	90 Seconds or less	60 Seconds or less	90 Seconds or less	30 Seconds or less	30 Seconds or less	30 Seconds or less
Life Expectancy	2 to 3 years with normal service	2 to 3 years with normal service	2 to 3 years with normal service	5 years plus with normal service	5 years plus with normal service	5 years plus with normal service
Accuracy (which ever is greater)	± 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	± 5% of reading or ± 2 % of full scale	± 5% of reading or ± 2 % of full scale
Weather Resistant	Patented water repellent sensor coating	Patented water repellent sensor coating	Patented water repellent sensor coating	Patented water repellent sensor coating	Patented water repellent sensor coating	Patented water repellent sensor coating

Operating Environment
	Combustibles LEL	Combustibles PPM	LEL H2 Specific
Operating Temperature	-40°F to 167°F -40°C to 75°C	-40°F to 167°F -40°C to 75°C	-40°F to 167°F -40°C to 75°C
Relative Humidity	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing
Location	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.

Operating Environment Cont.
	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	CH4 Methane	HC Hydrocarbons	CO2 LEL PPM Carbon Dioxide
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	-40°F to 122°F -40°C to 50°C	-40°F to 122°F -40°C to 50°C	-40°F to 122°F -40°C to 50°C
Relative Humidity	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing
Location	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.	Indoor or outdoor. Explosion proof for Class I, Div. 1, Groups B, C, D.

Operating Voltage
Operating Voltage	10 VDC - 30 VDC

Approvals
	Combustibles LEL	Combustibles PPM	LEL H2 Specific
Approvals	65-2640RK UL --------------- 65-2640RK-05 C CSA US	65-2640RK UL --------------- 65-2640RK-05 C CSA US	65-2641RK UL ---------------- 65-2641RK-05 C CSA US

Approvals Cont.
	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	CH4 Methane	HC Hydrocarbons	CO2 LEL PPM Carbon Dioxide
Approvals	C CSA US	C CSA US	C CSA US	C UL US	C UL US	C UL US

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 Voltage
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 and Warranty
Controllers	Beacon 110, Beacon 200, Beacon 410A, Beacon 800 as well as most DCS / PLC systems
Warranty	One year material and workmanship

General Specifications Non Explosion Proof
	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	Toxics See Chart Below	CO2 Carbon Dioxide
Part Number	65-2666RK *65-2644RK	65-2662RK	65-2663RK	See Chart Below	65-2661RK-02 65-2661RK-03 65-2661RK-05 65-2661RK-10
Sesors	Galvanic cell	Electrochemical	Electrochemical	Electrochemical	Infrared
Measuring Ranges	0-25% Vol.	0-100 ppm	0-300 ppm	See Chart Below	-02 0 - 5000 ppm -03 0-5% Vol. -05 0-50% Vol. -10 0-100% Vol.
Resolution	0.1% Vol.	1 ppm	1 ppm	See Chart Below	20 ppm / 0.1% Vol. / 1% Vol.
Lower Detectable Limit (LDL)	0.1% Vol.	2% of full scale	2% of full scale	2% of full scale	2% of full scale
Response Time (T-90)	35 Seconds or less	35 Seconds or less	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	125 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	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	2 to 3 years with normal service	2 to 3 years with normal service	2 to 3 years with normal service
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
	O2 Oxygen	H2S Hydrogen Sulfide	CO Carbon Monoxide	Toxics	CO2 Carbon Dioxide
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	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing	5 - 95% RH non-condensing
Location	Indoor or outdoor	Indoor or outdoor	Indoor or outdoor	Indoor or outdoor	Indoor or outdoor

Operating Voltage
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 and Warranty
Controllers	Beacon 110, Beacon 200, Beacon 410A, Beacon 800 as well as most DCS / PLC systems
Warranty	One year materials and workmanship

M2A Toxic Transmitter Sensor
Part Number With J-Box	Gas	Range	Resolution	Sensor Type
65-2648RK-NH3	Ammonia (NH3)	0 - 75.0 ppm	0.1 ppm	ESM -01
65-2648RK-AsH3	Arsine (AsH3)	0 - 75.0 ppm	0.1 ppm	ESM -01
65-2670RK-CL2	Chlorine (Cl2)	0 - 3.00 ppm	0.01 ppm	CT-7
65-2670RK-CL210	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