Oxygen Deficiency Monitor

Transcription

1 Oxygen Deficiency Monitor Model O2000 This unique and compact oxygen monitoring system from Air Liquide should be installed in any confi ned space where inert gases might accumulate. This includes gas storage areas, freezers, confi ned spaces and other locations where low oxygen levels may pose an asphyxiation hazard. Unlike electrochemical sensor cells, Air Check features an exclusive, current limiting zirconium oxide oxygen sensor that will operate continuously for 10 or more years with little or no maintenance. It responds to low oxygen conditions within seconds, providing drift-free oxygen readings, even in areas where temperature, barometric pressure and humidity levels are variable. With the Air Liquide Air Check monitoring system, there are no zero or span calibration pots to adjust. Exposure to a reference gas is never necessary. Moreover, when compared to disposable-type sensors that are no longer effective after approximately one year of service, Air Check is easily the more cost-effective oxygen monitoring solution. Our Air Check monitor with long-life zirconium O2 sensor pays for itself in as little as three years! Air Check transmits continuous oxygen concentration levels to any system control data acquisition system or programmable logic controller. It can be confi gured as a display-only monitor or a full-featured monitor with dual-level, user-selectable alarm relays that can be operated remotely up to 1,000 meters from centralized controllers. Suitable for both indoor and outdoor applications, Air Check electronics are housed in a Nema 4X housing, with an optional EX available for hazardous areas. Benefi ts/features Zero maintenance zirconium cell No calibration required Unaffected by environmental temperature, humidity and barometric variations Operates at -40 F (-40 C) in freezers 10+ year sensor life Local display, 4-20mA output Joystick adjustable dual-alarm system relays Computer controlled electronics Mounting feet can be oriented in any direction or removed for fl ush mounting Furnished with UL listed 110 VAC/24 VDC regulated power adapter Gas Detected Factory Default Alarm Threshold Settings Q3-O2000 Oxygen Alarm %* Orange LED Alarm %* Red LED Audible Alarm 19.5%* 90 db Alarm Specifications Sampling Method and Range: Diffusion, 0 25% O2 Accuracy: ±0.5% of Operating Temperature: -40 F to 131 F (-40 C to 55 C) Humidity: 0 95% Display: 3/4" backlit LCD digital Audible Alarm (Sound Output): 90 db Response Time: Within 1 second of any change in O2 Repeatability: ±1% Model O2000 Approvals: Ce approved and factory-calibrated against a NIST-traceable reference standard Required Calibration: None (no zero or span pots supplied) Minimum Detection: 1000 ppm signal Outputs: DC 4-20mA analog output; dual-level user-selectable alarm relays and one fault relay (2 VDC/240 VAC) Power Requirements: 24 VDC 100mA without relays, 500mA with relays (unit supplied with 110 VAC power adapter with 6 ft. power cord) Dimensions: 5.5" W x 3.5" H x 3.25" D (140 mm x 89 mm x 83 mm) Enclosure: ABS plastic, Nema 4X rated general purpose (optional EX available for hazardous areas) Weight: 1.6 lbs. (0.8 kg) * Alarms are factory (default) set to automatically reset (non-latching) when level exceeds threshold settings.

2 Oxygen Carbon Dioxide Monitor Model O2CO2000 This unique and compact dual monitor from Air Liquide is ideal for the continuous monitoring of both O2 and CO2 gases simultaneously to alert and protect personnel from entering potentially hazardous situations where inert gases may accumulate. This includes nitrogen gas storage areas, CO2 beverage gas distribution areas, confi ned spaces and other locations where low oxygen or elevated carbon dioxide levels may pose a health hazard. Model O2CO2000 Unlike continuously depleting electrochemical sensor cells, the Dual Air Check monitor features exclusive zirconium and patented NDIR cells to provide stable readings. O2 and CO2 readings are stable even in areas where temperature, barometric pressure and humidity levels are continually changing. The O2 sensor requires no quarterly calibration or annual maintenance, while the CO2 sensor automatically adjusts to ambient levels. Dual Air Check automatically adjusts to ambient CO2 levels on a weekly basis, or on-demand if desired. In addition, there are no zero or span adjustments to make or expensive maintenance required. Simply plug Dual Air Check into any standard AC outlet and depend on continual, maintenance and error-free air monitoring. Dual Air Check has individual dedicated user-selectable relays that can be used to operate on-off valves for the control of CO2 injection in grow rooms while simultaneously activating alarms when O2 levels get too low. The O2 sensor can also be used for controlling nitrogen generators for hypobaric rooms while using the CO2 sensor to alarm to TLV levels of CO2. A built-in CPU provides an inexpensive monitor with local display, safety alarms and control for both O2 and CO2 simultaneously. Benefi ts/features Zero maintenance zirconium O2 cell and long life CO2 sensor No calibration required for O2 Self-calibrating CO2 sensor Unaffected by environmental temperature, humidity and barometric variations Three (3) year warranty Local backlit concentration display Built-in visual LED alarm indicators and audible horn Alarm level 1 and 2 for O2 and CO2 Mounting feet can be oriented in any direction or removed for fl ush mounting Furnished with UL listed 110 VAC/24 VDC regulated power adapter Gas Detected Factory Default Alarm Threshold Settings Q3-O2CO2000 Oxygen Alarm %* Red LED Carbon Dioxide Alarm ppm* Orange LED Audible Alarm 19.5% O2 or 5000 ppm CO2* 90 db Alarm Specifications Sampling Method and Range: Diffusion, 0 25% O2, 0 10,000 ppm CO2 Accuracy: ±1% of Operating Temperature: 32 F to 131 F (0 C to 55 C) Humidity: 0 95% RH (non-conforming) Display: 3/4" backlit LCD digital Signal Outputs: Audible Alarm: 90 db Alarm Indicator for O2: Red LED Alarm Indicator for CO2: Orange LED Response Time: Within 1 second of any change in O2 Repeatability: ±1% Approvals: Ce approved and factory-calibrated against a NIST-traceable reference standard Required Calibration: O2: none CO2: none when Auto Cal function is activated Minimum Detection: 200 ppm Signal Outputs: One user-adjustable alarm relay for O2, one user adjustable alarm relay for CO2 (rated at 2 amps 24 VDC/240 VAC) Analog Output: 4-20mA selectable for either O2 or CO2 Power Requirements: 24 VDC 350mA (unit supplied with 110 VAC power adapter with 6 ft. power cord) Dimensions: 6.5" W x 3.5" H x 3.25" D (165 mm x 89 mm x 83 mm) Enclosure: Polycarbonate plastic, general purpose Weight: 1.6 lbs. (0.8 kg) * Alarms are factory (default) set to automatically reset (non-latching) when level exceeds (O2) or is below (CO2) threshold settings.

3 Snoop Liquid Leak Detector Model 46SN Snoop liquid leak detector with the Snooper tube detects many types of gas leaks even in hard to reach areas in industrial and laboratory applications. Benefits/Features Nontoxic, pure. Nonflammable. No residue, dries clean. No chlorine or halogen additives. Detects leaks on vertical surface. Exceeds MIL-L-25567C, Type 1, Oxygen Systems. Specifications Temperature Range: 27 F to 200 F (-3 C to 94 C) Q3-46SN-8 Q3-46SN-128 Description 8 ozs. Squeezable Plastic Bottle with Snooper Tube, extendible to 12" 1 gallon container SNOOP is a trademark of Swagelok Company

4 Gas Leak Detector Model The Model Gas Leak Detector easily and quickly pinpoints gas leaks emitting from pressurized systems. Utilizing a thermal conductivity detector, the instrument responds to any gas mixture with a thermal conductivity different from that of air. Helium leaks of 1 x 10-5 cc/sec are easily detected, as are many others such as refrigerant leaks of 1.1 x 10-4 cc/sec and argon leaks of 1.0 x 10-4 cc/sec to name a few. CAUTION: The Model (and 21072) is NOT designed to be used to determine leaks of combustible gases. This leak detector uses air as its reference and is designed to determine low level leaks of any gas having a thermal conductivity different from that of air, therefore, it is not specifi c to any gas or vapor. A combustible gas detector should be used for the determination of combustible gas leaks in possible hazardous conditions. Model Benefits/Features Easy to operate just turn it on, zero and then probe for leaks Precision instrument with high sensitivity User-selectable hi/low sensitivity settings Flash memory for saving various settings including alarm mode, setpoint and volume, peak hold delay, LED brightness, sensitivity, and pump speed Miniature probe pinpoints exact leaks No messy soap solutions No system contamination Can be tested to NIST-traceable standards Optional carrying case is available Industrial Applications Testing and quality control Valves and manifolds Welds, seams, joints Pressure regulators Compression fi ttings High-pressure vessels and gas lines Refrigeration and air conditioning Ordering Information Q21070 Q21072 Description Laboratory Applications Gas chromatographs Purge and trap systems Injection ports/septa Column and detector fi ttings Gas purifi ers and traps Mass fl ow controllers Cylinder connections Tube fi ttings Specifications 115V mini gas leak detector 230V mini gas leak detector Detector: Thermal conductivity cell with thermistors Operational Temperature: 70 F ±20 F (21 C ±11 C) Visual Readout: LED bar graph featuring adjustable brightness and peak hold with settable duration Pump: Diaphragm type and pump speed control Line Voltage: Model 21070: 115 V, 60 Hz, 4W Model 21072: 230 V, 50 Hz, 4W Battery: Rechargeable Ni-Cd, 7.36 V, 800 mah Battery Life: 7 to 8 hours Recharged to 95% of capacity in one hour Low battery indicator Very low battery shutdown Ranges: Low: x1 High: x100 Adjustable sensitivity for low and high ranges Time constant/average Zero: Manual with drift elimination Audio Signal: Audible alarm with adjustable setpoint and volume Features: Flash memory for saving settings Microprocessor controlled Dimensions: 5.25" L X 3.25" W X 1.81" H (13.34 cm X 8.26 cm X 4.6 cm) Weight: Instrument: 1.05 lbs. (0.48 kg) Charger: 0.61 lbs. (0.28 kg) Sensitivity Minimum leak rate required to produce 10% deflection of. Argon: 1.0 x 10-4 cc/sec ft 3 /yr Carbon Dioxide: 1.1 x 10-4 cc/sec ft 3 /yr Helium: 1.0 x 10-5 cc/sec ft 3 /yr Refrigerant: 1.1 x 10-4 cc/sec ft 3 /yr Options: Carrying Case Model Q Testing to a NIST-traceable standard contact your Air Liquide representative for more information.

5 Single Channel Wall Mount Controller Beacon 110 Gas detection should not be complicated. The Beacon 110 is gas detection simplified. The Beacon 110 from Air Liquide is a powerful, low cost fixed system controller for one point of gas detection. It is microprocessor-controlled, versatile and simple to install and operate. It is capable of accepting Direct Connect and S2 sensors directly for LEL level combustibles, O2, CO2 and toxic gas sensors. The Beacon 110 can also accept any 4-20mA transmitter (2 or 3 wire, 24 VDC). Sensors can be mounted directly at the Beacon 110 housing, or can be wired remotely from the controller. The 10 amp rated relay contacts allow direct control of external alarms and horns. The digital display has backlighting and simultaneous readout of the gas type and concentration. Housed in a NEMA 4X rated case for a weather-tight seal, this case design complies with most lock out/tag out standards and can be fully secured. An external reset switch allows the alarm to be silenced from outside of the controller housing. The Beacon 110 ships complete with a wall mounting kit for easy installation. Air Liquide offers the industry s widest selection of standard and toxic gas detection sensors, all of which can be utilized with the Beacon 110, providing gas monitoring protection for almost any application. Benefits/Features Low cost versatile solution Accepts direct wire sensors for LEL, O2, H2S, CO, CO2, toxic direct connect sensors Digital display of gases and concentrations Accepts any 4-20mA transmitter Provides 4-20mA output Two programmable alarm levels Audible alarm with reset button Compact, weatherproof NEMA 4X enclosure 115/220 VAC or 24 VDC operation Built-in trouble alarm with relay Relay rating 10 amps, Form C Long life sensors available (2+ years typical) Optional strobe CSA certified to CSA C22.2 No and UL One year materials and workmanship warranty Specifications Physical Dimensions 8.5" H x 7" W x 4.3" D (216 mm x 178 mm x 109 mm) Enclosure: Wall-mounting grey fiberglass with hinged cover Conduit Connection: Two 3/4" NPT conduit hubs provided (for sensor wiring and for power and relay wiring) Wiring Termination: Screw-type terminal block, 14 gauge max Power: Universal 115 VAC and 220 VAC, or 24 VDC nominal, battery backup option available Controls: Three internal push buttons for setup, programming and calibration. One external push button for alarm reset Environmental Operating Temperature: -4 F to 122 F (-20 C to 50 C) Storage Temperature: -4 F to 158 F (-20 C to 70 C) Enclosure Rating: NEMA-4X enclosure, chemical and weather-resistant, suitable for indoor and outdoor installations Inputs Direct Wired Sensors: LEL, O2, CO2 and toxic gas sensors; remote amp not required for less than 500 feet 4-20mA Sensors: Accepts any 4-20mA transmitter (24 VDC, 2 or 3 wire) a wide variety of sensors are available with 4-20mA signals. Wiring distances up to 8,000 feet Sampling Methods: Diffusion and sample draw heads available Outputs Relays: Three relays 10 amp rating (at 115 VAC), SPDT isolated contacts. Two relays for gas alarms and one trouble relay. Relays are fully programmable for increasing or decreasing alarm, latching or self reset, normally energized or normally de-energized, time delay for alarm on and alarm off 4-20mA: Signal output (max load impedance 500 ohms) per channel 24 VDC: (400 ma max) output provided to operate sample drawing adapters or other accessories Display: 2" x 8" alphanumeric display with backlighting Audible: Built-in audible alarm, 94dB, mounted on enclosure. Coded output: pulsing = gas alarm, steady = fail Visual: Three LEDs on the front cover for alarm status indication and malfunction. Optional topmount strobe Air Liquide Canada - Specialty Gases

6 Single Channel Wall Mount Controller (cont d.) Beacon 110 Industry Applications Petrochemical plants Refineries Water and wastewater treatment plants Pulp and paper mills Gas, telephone and electric utilities Parking garages Manufacturing facilities Steel Automotive HVAC Ordering Information When ordering a Beacon 110 system, please specify the following components: 1. Controller: Be sure to order correct -01, -02 or -03 version if intended to be used with a standby battery or if a strobe light is needed 2. Detector Assembly (one only): See note below 3. Battery back-up assembly if Beacon 110 with battery charger is ordered RK Standby battery assembly, 24 VDC, 1.2 AMP hours RK Standby battery assembly, 24 VDC, 12 AMP hours Please note: The Beacon 110 can accept Direct Connect sensors for LEL combustibles, oxygen, hydrogen sulfide, and carbon monoxide as well as a few other gases (see Direct Connect Sensors). The Beacon 110 can also accept any 4-20mA transmitter. Description RK RK RK RK-03 Single channel controller (no sensors) Single channel controller with battery charger (no sensors or back-up battery) Single channel controller with strobe light (no sensors) Single channel controller with battery charger and strobe light (no sensors or back-up battery)

7 Four Channel Wall Mount Controller Beacon 410 The Beacon 410 from Air Liquide is a highly configurable, microprocessor-based, flexible and easy-to-use four channel gas monitor. It simultaneously displays the gas type, readings and status for four channels of gas detection. It can monitor any combination of Direct Connect sensors including LEL combustibles, O2, CO2 and toxic gas sensors as well as any 4-20mA transmitters. Each channel has three fully configurable alarm points. A built-in silenceable audible alarm alerts you to alarm conditions. Each channel also has two dedicated fully configurable relays and there is a bank of common relays as well. The common relays can be optionally configured as additional channel relays, allowing up to three alarm relays per channel. Each channel provides a 4-20mA output signal. A digital Modbus interface for remote logging of data via a Modbus network is standard. A Min-Max feature retains high and low peak readings for review at any time. Field calibration is made simple by the easy-to-use calibration mode. A fully configurable high visibility strobe is available as an option. The unit can be powered from 115/220 VAC, an external 24 VDC source or a 24 VDC backup battery. A trickle charging battery backup feature is also available as an option. All features and functions of the Beacon 410 are controlled by easy-to-use menus on the backlit LCD display. The Form-C (SPDT) relay contacts are rated at 10A, 250V, reducing or eliminating the need for additional slave relays. All features of the Beacon 410 are built into the unit so you never need to purchase or maintain any add-on cards or components. Air Liquide offers the industry s widest selection of standard and toxic gas detection sensors, all of which can be utilized with the Beacon 410, providing gas monitoring protection for almost any application. Benefits/Features Simultaneously monitor up to four channels Digital display of gases and concentrations Accepts direct wire sensors for LEL, O2, H2S, CO, CO2, toxic Direct Connect sensors Accepts any 4-20mA transmitter, two or three wire Three programmable alarm levels per channel Up to three configurable alarm relays per channel Zero follower automatically compensates sensor drift 4-20mA analog and Modbus digital output standard 115/220 VAC or 24 VDC operation Audible alarm with silence feature Alarm reset switch Built-in trouble alarm with relay Weather-proof NEMA 4X enclosure Optional strobe and battery backup available CSA Certified to CSA C22.2 No and ANSI/ISA S82.01 One year materials and workmanship warranty Industry Applications Petrochemical plants Refineries Water and wastewater treatment plants Pulp and paper mills Gas, telephone and electric utilities Parking garages Manufacturing facilities Steel Automotive HVAC Air Liquide Canada - Specialty Gases

8 Four Channel Wall Mount Controller (cont d.) Beacon 410 Specifications Physical Dimensions 12.5" H x 11" W x 6.4" D (318 mm x 279 mm x 136 mm) Enclosure: NEMA 4X non-metallic for indoor and outdoor locations Conduit Connection: Four 3/4" NPT conduit hubs provided (for sensor, power and relay wiring) Wiring Termination: Screw-type terminal block, 14 gauge max Power: 115 VAC and 220 VAC, or 24 VDC nominal, battery backup option available Controls: Display PCB control switches UP/YES push button switch DOWN/NO push button switch ESCAPE push button switch ENTER push button switch External reset switch ON/OFF toggle switch Environmental Operating Temperature: -4 F to 122 F (-20 C to 50 C) Storage Temperature: -4 F to 158 F (-20 C to 70 C) Relative Humidity: 0 95% RH (non-condensing) Enclosure Rating: NEMA-4X enclosure, chemical and weather-resistant Inputs Direct Wired Sensors: LEL, O2, CO2 and toxic gas sensors. Remote amp not required for less than 500 feet 4-20mA Sensors: Accepts any 4-20mA transmitter (24 VDC, 2 or 3 wire) wide variety of sensors are available with 4-20mA signals. Wiring distances up to 8,000 feet Sampling Methods: Diffusion and sample draw heads available Ordering Information When ordering a Beacon 410 system, please specify the following components: Outputs Relays: Two flexible, programmable Form-C (C, NO, NC) relays per channel, plus five common relays (Fail, Alarm-1, Alarm-2, Alarm-3, Alarm-Any). Common relays may optionally be assigned to function as additional channel alarm relays, providing for up to three alarm relays per channel. 10A contact rating 4-20mA: Signal output, 4-20mA (maximum load impedance 500 ohms), per channel RS-485: Modbus format RS-485 serial output of all channel data, including gas reading and alarm status Display: 4" x 20" backlit LCD display Audible: Built-in audible alarm, 94 db, mounted on enclosure. Coded output: pulsing = gas alarm, steady = fail Visual: Alarm LEDs (on Display PCB) Alarm 1 = yellow; Alarm 2 = orange; Alarm 3 = red; Fail = yellow. Green Pilot LED to indicate AC power connected (on Display PCB). An optional 24 VDC NEMA 4X strobe mounted to top of case 1. Controller: Be sure to order correct -01, -02 or -03 version if intended to be used with a standby battery or if a strobe light is needed 2. Detector Assemblies (up to 4): See note below 3. Battery back-up assembly if Beacon 410 with battery charger is ordered RK Standby battery assembly, 24 VDC, 12 AMP hours Please note: The Beacon 410 can accept Direct Connect Sensors for LEL combustibles (catalytic or IR sensor), oxygen, hydrogen sulfide, carbon monoxide and carbon dioxide as well as a few other gases (see Direct Connect Sensors). The Beacon 410 can also accept any 4-20mA transmitter. Description RK RK RK RK-03 Four channel controller (no sensors) Four channel controller with battery charger (no sensors or back-up battery) Four channel controller with strobe light (no sensors) Four channel controller with battery charger and strobe light (no sensors or back-up battery)

9 Stand Alone Transmitter Model M2A The M2A from Air Liquide 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. Set-up 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 4-20mA 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. Toxic gas sensors are available for NH3, SO2, PH3, AsH3 and HCN. Explosion-Proof Model C US CLASSIFIED Benefits/Features Operates independently or with any controller, PLC or DCS Direct digital readout with OLED cold temperature display Monitors LEL, O2, H2S, CO, CO2 and 100% vol. CH4. Toxic gases include NH3, SO2, HCN and more Infrared sensor for combustibles and CO2 4-20mA and digital Modbus outputs standard Two fully programmable alarm relays plus fail relay Nonintrusive calibration via magnetic wand Explosion-proof construction Patented water-repellent sensor cover User-friendly setup, push buttons and OLED menus Long-life sensors (2+ years typical) Non Explosion-Proof Model

10 Stand Alone Transmitter (cont d.) Model M2A Explosion-Proof Specifications General Purpose H2-Specific Oxygen Hydrogen Sulfide Carbon Monoxide Methane Hydrocarbons Carbon Dioxide LEL LEL O2 H2S CO CH4 HC CO RK RK RK RK-05 Sensors Catalytic Catalytic Galvanic Cell Measuring Range 0 100% LEL 0 100% LEL RK RK RK-05 Electro- Chemical Electro- Chemical 0 25% Vol ppm ppm Resolution 1% LEL 1% LEL 0.1% LEL 1 ppm 1 ppm Lower Detectable Limit (LDL) Current Draw (max) 24VDC* 0.1% Vol RK-CH RK-CH RK-HC RK RK RK RK-10 Infrared Infrared Infrared 0 100% LEL 0 100% Vol. 1% LEL/ 1% Vol % LEL 1% LEL/ 1% Vol ppm 0 5% Vol. 0 50% Vol % Vol. 20 ppm/0.1% Vol./1% Vol. 160mA 160mA 125mA 125mA 125mA 125mA 125mA 125mA Response Time (T-90) 35 seconds 35 seconds 35 seconds 35 seconds 35 seconds 30 seconds 30 seconds 30 seconds Life Expectancy** 2 to 3 years 3 to 5 years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years 5+ years 5+ years Accuracy (whichever is greater) Weather-Resistant Alarm Settings Alarm Indication Alarm Relays Dimensions Display Enclosure Enclosure Rating Controls Operating Temperature Relative Humidity Location Operating Voltage Analog Outputs Digital Outputs Approvals Controllers Warranty ±5% of reading or ±2% LEL ±5% of reading or ±2% LEL ±0.5% Vol. O2 ±5% of reading or ±2 ppm H2S ±5% of reading or ±5 ppm CO Patented water-repellant sensor coating ±5% of reading or ± full scale ±5% of reading or ± full scale ±5% of reading or ± Two fully programmable alarm set points, increasing/decreasing, latching/self-resetting, on delays, off delays, normally energized or de-energized Visual LEDs: Alarm 1 = amber, Alarm 2 = red, Fail = red 5 amp form C contacts for Alarm 1, Alarm 2 and Fail 8.5" H x 5.2" W x 4.5" D (215 mm x 132 mm x 114 mm) Alphanumeric OLED display, 8 characters per line, 2 lines for gas concentration readout plus user-friendly calibration and setup. Explosion-proof for Class 1, Div. 1, Groups B, C, D NEMA 4X, explosion-proof, watertight, cast aluminum with o-ring seal and epoxy-powder coating Magnet used for calibration functions. Calibrates without opening the housing. Internal push-button controls also available for calibration and setup -40 F to 167 F (-40 C to 75 C) RK UL RK- 05 ccsaus -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) 5 95% RH noncondensing -40 F to 122 F (-40 C to 50 C) Indoor or outdoor. Explosion-proof for Class 1, Div. 1, Groups B, C, D VDC -40 F to 122 F (-40 C to 50 C) Linear 4-20mA signal into 1000 ohms impedance max (24VDC) ohms max (12VDC) corresponding to RK UL RK- 05 ccsaus Modbus RTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2k baud -40 F to 122 F (-40 C to 50 C) ccsaus ccsaus ccsaus culus culus culus Compatible with Beacon 110 and 410 controllers and most DCS/PLC systems One year materials and workmanship * Alarm 1 and Alarm 2 active, all relays energized ** With normal service

11 Stand Alone Transmitter (cont d.) Model M2A Non Explosion-Proof Specifications Oxygen Hydrogen Sulfide Carbon Monoxide Toxics Carbon Dioxide O2 H2S CO CO RK RK* RK RK See chart on pg RK RK RK RK-10 Sensors Galvanic Cell Electrochemical Electrochemical Electrochemical Infrared Measuring Range 0 25% Vol ppm ppm See chart on pg. 4 Resolution 0.1% Vol. 1 ppm 1 ppm See chart on pg ppm 0 5% Vol. 0 50% Vol % Vol. 20 ppm/0.1% Vol./ 1% Vol. Lower Detectable Limit (LDL) 0.1% Vol. Current Draw (max) 24VDC 125mA with Alarm 1 and Alarm 2 active and all relays energized Response Time (T-90) 35 seconds 35 seconds 35 seconds 60 seconds 30 seconds Life Expectancy** 2 to 3 years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years Accuracy (whichever is greater) Alarm Settings Alarm Indication Alarm Relays Dimensions Display Sensor Rating Housing J-box Controls Sensors Operating Temperature Relative Humidity Location Operating Voltage Analog Outputs Digital Outputs ±0.5% Vol. O2 ±5% of reading or ±2 ppm H2S ±5% of reading or ±5 ppm CO ±10% of reading or ±5% of Two fully programmable alarm set points, increasing/decreasing, latching/self-resetting, on delays, off delays, normally energized or de-energized Visual LEDs: Alarm 1 = amber, Alarm 2 = red, Fail = red 5 amp form C contacts for Alarm 1, Alarm 2 and Fail 8.5 H x 5.2 W x 4.5 D (215 mm x 132 mm x 114 mm) ±5% of reading or ± Alphanumeric OLED display. 8 characters per line, 2 lines for gas concentration readout plus user-friendly calibration and setup -4 F to 113 F (-20 C to 45 C) Non explosion-proof construction, designed for Class 1, Div. 2, Groups B, C, D (no certification) NEMA 4X, explosion-proof, water-tight, cast aluminum with o-ring seal and epoxy-powder coating Magnet used for calibration functions. Calibrates without opening the housing. Internal push-button controls also available for calibration and setup -40 F to 104 F (-40 C to 40 C) Aluminum/plastic (non explosion-proof) 23 F to 104 F (-5 C to 40 C) 5 95% RH non-condensing Indoor or outdoor VDC 14 F to 104 F (-10 C to 40 C) -40 F to 122 F (-40 C to 50 C) Linear 4-20mA signal, into 1000 ohms impedance max (24VDC), ohms max (12VDC) corresponding to 0 Modbus BTU output standard, fully configurable, 2-wire RS-485, 1200 to 19.2K baud Approvals ccsaus ccsaus ccsaus culus culus Controllers Warranty Compatible with Beacon 110, 200, 410 and 800 controllers and most DCS/PLC systems One year materials and workmanship * Partial pressure sensor for helium applications - consult your Air Liquide representative ** With normal service

12 Stand Alone Transmitter (cont d.) Model M2A Ordering Information for M2A Toxic Transmitter Sensors * Gas Range Resolution RK-NH3 Ammonia (NH3) 0 75 ppm 0.1 ppm RK-AsH3 Arsine (AsH3) ppm 0.01 ppm RK-HCN Hydrogen Cyanide (HCN) 0 15 ppm 0.1 ppm RK-PH3 Phosphine (PH3) 0 1 ppm 0.01 ppm RK-SO2 Sulfur Dioxide (SO2) 0 6 ppm 0.01 ppm * With J-box Available Accessories AC power supply Remote horns and lights Flow-through adaptors SCOTTY Calibration Kits Splash guards Dataloggers Calibration adaptors M2A Wiring Matrix Interface with Beacon Controllers Transmitter Number of Wires to Controller Maximum Distance to Controller 18 AWG Wire 16 AWG Wire 14 AWG Wire Model M2A ft ft ft.

13 Intelligent Gas Detector Model GD-70D The Model GD-70D smart gas detection transmitter series from Air Liquide sets a new standard for performance, flexibility and versatility. The GD-70D sample-draw transmitter offers an array of sensor technologies unmatched in the industry, including unique offerings such as our hydrogen-specific or LEL versions. The long life, high-capacity pump and wide variety of sensing elements are replaceable in a few seconds, with no tools required. The smart sensors retain all calibration and sensor-specific data in non-volatile memory, so sensors can be hot-swapped in the field with no programming required. The sensors also retain calibration information, which means they can be conveniently calibrated separate from the transmitter, avoiding transport of calibration gases to field locations. The GD-70D firmware automatically corrects for longterm zero and span drift minimizing maintenance and maximizing reliability. The GD-70D can be used as a stand-alone device, offering a number of communication protocols to existing PLC systems, or can be integrated with the Beacon series of single and multi-channel controllers. Model GD-70 All GD-70D transmitters include a large, easy-to-read integral LCD display, tri-color bar graph for visual notification of alarm status, programmable low and high alarm relays, and fault relay. Pump flow is self-tuning for maintenance-free operation. Because all GD-70D base units are identical, sensors can be interchanged with no programming or tools required, resulting in maximum flexibility to the user. TOOL-FREE MAINTENANCE! Model PLU-70 Pyrolyzer and GD-70 Sensor Replacement Pump Replacement Please note: Specifications subject to change without notice

14 Intelligent Gas Detector (cont d.) Model GD-70D Benefits/Features Monitor combustibles, O2 and a wide range of toxics Plug and play intelligent sensors retain calibration and sensor data Common platform (main unit, sensor, pump) for all detection methods Universal main unit (all sensor types) Multifunctional sensor unit (new Intelligent sensor) No internal tubing (main unit) and no coil (pump) Front access, no tools required, easy sensor and pump replacement Large size LCD screen Various communication methods available (4-20mA, LonWorks and PoE) Minimal maintenance cost through enhanced troubleshooting firmware functions Small mounting space Environmentally friendly Wide variety of sensors available Industry Applications Petrochemical plants Refineries Water and wastewater treatment plants Pulp and paper mills Gas, telephone and electric utilities Parking garages Manufacturing facilities Steel Automotive HVAC Bright visual alarm LEDs Alarm point Pyrolyzer connection Graphical display of gas concentration Flow rate (automatic adjustment) Maintenance status Gas concentration Detection unit of measurement Gas detected Inhibit offline communication for PC Control switches Sensor identification Cable inlet Gas inlet/outlet Power switch Lock lever

15 Intelligent Gas Detector (cont d.) Model GD-70D Specifications Main Unit Communication: GD-70D: 4-20mA DC GD-70D-NT: DC power line GD-70D-ET: PoE method Detection Principle: Different type depending upon sensor unit and detectable gas (see table) Sampling Method: Sample draw (auto-adjustment of flow rate) 0.5/min ±10% Display: Large LCD display (white backlight) Gas concentration Flow rate, communication status, pyrolyzer status, gas detected Error code, content of error Gas Alarms: Two alarm levels 1st alarm is red and 2nd alarm is red; fault alarm is yellow External Output: 1st, 2nd and trouble alarms relay contact output for each alarm Self Diagnostic Function: System failure, sensor failure, flow failure, communication error NT/ET/analog Datalogging: Event history, alarm history, calibration history. Alarm trend (180 sec before/ after 1st alarm) Operation Temperature and Humidity: 0 to 40ºC, 30 to 70% RH (non-condensing) Operating Settings: All operational settings are user adjustable through front panel Power Requirements: GD-70D and GD-70D-NT: DC 24V ±10%, approximately 1.5W (max 4W including sensor unit) Please note: Approximately 2.5W (max 5W) with SGU sensor unit GD-70D-ET: PoE standard arrangement Dimensions: 4.7" H x 2.8" W x 5.9" D (120 mm x 70 mm x 150 mm) Weight: 2 lbs. (0.9 kg) approximately including sensor unit Mounting: Wall-mounting base plate by 2 or 3 screws Sampling Tubing: 4 x 6mm PTFE tubing recommended. Tube fittings provided as standard accessories Bushing: Cable type varies depending on communication method (cable bushing optional) Specifications Pyrolyzer Unit Model PLU-70 Application: NF3/TEOS gases detected in air Usage: Used by connecting to GD-70D (main unit) Power Lamp: LED (green color) Normal: Light-on Warming-up: Flashing at every 1 sec interval Trouble: Flashing at every 0.2 sec interval Self-diagnostic Function: Pyrolyzer unit trouble Fan trouble System trouble Operating Temperature and Humidity: 0 to 40 C, 30 to 70% RH (non-condensing) Operational Settings: All operational settings are user adjustable through front panel Power Requirements: DC 24V+/- 10%, approx. 25W (max) Dimensions: 4.7" H x 2.8" W x 5.9" D (120 mm x 70 mm x 150 mm) Weight: 2.6 lbs. (1.2 kg) approximately Mounting: Wall-mounting base plate by 2 or 3 screws Sampling: 4x6 mm PTFE tubing recommended. Tube fittings provided as standard accessories Bushing: 1.25 sq two core cable for power supply DC 24V (cable bushing optional) Specifications Sensor Unit Specifications Detector Type: ESU SGU SSU OSU NCU Detection Principle Electrochemical cell Semiconductor Pyrolysis-particle Galvanic cell Catalytic combustion Gas Detected and Detection Range Self-diagnosis Function Data Logging Function Refer to list of detectable gases on pg. 4 0 to 2000 ppm H2, CH4 or CH2F2 (R32) in air and others 0 to 15 ppm TEOS in air 0 to 25% O2 in air Sensor trouble, system failure Event history, alarm history, calibration history. Alarm trend (60 sec. before/after first alarm) 0 to 100% LEL H2, CH4 and others

16 Intelligent Gas Detector (cont d.) Model GD-70D Ordering Information for Gases Detected ESU Measurable Gas Detected Detection Range ACGIH TLV-TWA SGU Measurable Gas Detected Detection Range ACGIH TLV-TWA GD-70D-NH3 Ammonia 75 ppm 25 ppm GD-70D-ASH3 Arsine 0.2 ppm 5 ppb GD-70D-BCl3 Boron Trichloride 15 ppm HCl (C) 5 ppm GD-70D-BF3 Boron Trifluoride 9 ppm HF (C) 3 ppm GD-70D-BR2 Bromine 1 ppm 0.1 ppm GD-70D-CO-02 Carbon Monoxide 75 ppm* 25 ppm GD-70D-CO-01 GD-70D-CO ppm 300 ppm* GD-70D-CL2 Chlorine 3 ppm 0.5 ppm 1.5 ppm* GD-70D-CLF3-A Chlorine Trifluoride 0.6 ppm (C) 0.1 ppm GD-70D-B2H6 Diborane 0.3 ppm 0.1 ppm GD-70D-DCS Dichlorosilane 15 ppm HCl (C) 5 ppm GD-70D-DEA Diethylamine 15 ppm 5 ppm GD-70D-DMA Dimethylamine 15 ppm 5 ppm GD-70D-SI2H6 Disilane 15 ppm (C) 2 ppm GD-70D-F2 Fluorine 3 ppm 1 ppm GD-70D-GEH4 Germane 0.8 ppm (C) 2 ppm GD-70D-HBR-06 GD-70D-HBR-09 GD-70D-HCL-06E GD-70D-HCL-15E Hydrogen Bromide Hydrogen Chloride 6 ppm 9 ppm* 6 ppm 15 ppm* (C) 2 ppm (C) 2 ppm GD-70D-HCN Hydrogen Cyanide 15 ppm STEL (C) 4.7 ppm GD-70D-HF-03 GD-70D-HF-09 Hydrogen Fluoride 3 ppm* 9 ppm 0.5 ppm GD-70D-H2SE Hydrogen Selenide 0.2 ppm 0.05 ppm GD-70D-H2S-01 GD-70D-H2S-30 Hydrogen Sulfide 1 ppm* 30 ppm 10 ppm 10 ppm GD-70D-NO Nitric Oxide 100 ppm 25 ppm GD-70D-NO2-09 GD-70D-NO2-15 Nitrogen Dioxide 9 ppm 15 ppm 3 ppm 3 ppm GD-70D-N2O4 Nitrogen Tetraoxide 15 ppm NO2 3 ppm GD-70D-NF3 Nitrogen Trifluoride¹ 30 ppm 10 ppm GD-70D-O3 Ozone 0.6 ppm 0.1 ppm GD-70D-PH3-AH Phosphine 1 ppm 0.3 ppm GD-70D-SIH4-AH Silane 15 ppm 5 ppm GD-70D-SICI4 Silicon Tetrachloride 15 ppm HCl (C) 5 ppm GD-70D-SiF4 Silicon Tetrafluoride 9 ppm HF (C) 3 ppm GD-70D-SO2 Sulfur Dioxide 6 ppm GD-70D-SF4 Sulfur Tetrafluoride 9 ppm HF (C) 3 ppm GD-70D-TCS Trichlorosilane 15 ppm HCl (C) 5 ppm GD-70D-TMA Trimethylamine 15 ppm 5 ppm GD-70D-MDCM Dichloromethane 2000 ppm 50 ppm GD-70D-MR32 Difluoromethane (R32) 2000 ppm 1000 ppm GD-70D-MR41 FluoroMethane (R41) 2000 ppm 1000 ppm GD-70D-MH2-S500 Hydrogen 500 ppm* GD-70D-MH2-S1K GD-70D-MH2-S2K 1000 ppm* 2000 ppm GD-70D-MIPA-2K Isopropyl Alcohol 2000 ppm 200 ppm GD-70D-MCH4-2K GD-70D-MCH4-5K GD-70D-MCH30H-1 GD-70D-MCH30H-2 GD-70D-MC3H8-2K GD-70D-MC3H8-5K Methane Methyl Alcohol Propane NCU Measurable Gas Detected 2000 ppm 5000 ppm* 1000 ppm 2000 ppm* 2000 ppm 5000 ppm* Detection Range * Special order for non-standard range ** Pyrolyzer gases also require PLU-70 when ordering by these model numbers ¹ Includes pyrolyzer with model number ppm 200 ppm 1000 ppm LEL % Vol. GD-70D-LEL-H2 Hydrogen 100% LEL GD-70D-ISOB Isobutane 100% LEL GD-70D-LEL-CH4 Methane 100% LEL SSU Measurable Gas Detected Detection Range ACGIH TLV-TWA GD-70D-TEOS Tetraethyl 15 ppm 10 ppm Orthosilicate¹ GD-70D-TRIMOS Trimethoxysilane** 15 ppm GD-70D-TMS Trimethyl Silane** 15 ppm OSU Measurable Gas Detected Detection Range ACGIH TLV-TWA GD-70D-OXY Oxygen 25% Vol.

17 Direct Connect Sensors Sensors Only and Sensors with J-box Direct Connect gas sensors are highly reliable and very cost effective for the detection of common gas hazards. They are available for LEL, H2-specific LEL, LEL IR, O2, H2S, CO, CO2 and a variety of toxic gases. The sensors for LEL, H2, O2, H2S, CO2 and CO are explosion-proof with flame arresters, and approved for use in hazardous areas (Class 1, Div. 1 Groups B, C, D). An optional non-explosion proof version is available for O2, H2S, CO and CO2 for use in non-hazardous atmospheres. All Direct Connect sensors are designed to specifically interface with Beacon 110, 200 and 410 controllers. Direct Connect sensors can be used in two different ways. The sensors can be mounted directly to the controllers as a complete stand alone system, or they can be mounted to explosion-proof junction boxes for remote detection. Explosion-Proof O2 H2S CO 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 are available for Cl2, NH3, SO2, PH3, AsH3 and HCN. Direct Connect sensors can be used either indoors or outdoors. The flame arresters for the explosion-proof versions utilize a patented coating which make them water repellent. Also, splash guards are available for use in very wet environments. An optional stainless steel junction box is available for corrosive environments. Benefits/Features Available gases include LEL, H2S, CO and CO2 Toxic sensors include NH3, AsH3, Cl2, HCN, PH3 and SO2 Infrared sensors available for combustibles and CO2 Patented water-repellent sensor coating Explosion-proof construction Optional stainless steel junction box Long life service (2+ years typical) Explosion-Proof IR LEL and CO2 Explosion-Proof LEL Sensor Only (Explosion-Proof) NH3 Sensor Sensor Only (Non Explosion-Proof)

18 Direct Connect Sensors (cont d.) Explosion-Proof Models Specifications General Purpose H2-Specific Oxygen Hydrogen Sulfide Carbon Monoxide Methane Hydrocarbons Carbon Dioxide LEL LEL O2 H2S CO CH4 HC CO2 (Sensor with J-box) RK RK RK RK RK RK RK-CH RK-HC RK RK RK RK-10 (Sensor only) RK (UL) RK- 05 (CSA) LEL H2- NC RK RK RK RK- CH RK- HC RK RK RK RK-10 Sensors Catalytic Catalytic Galvanic Cell Electro- Chemical Electro- Chemical Infrared Infrared Infrared Measuring Range Lower Detectable Limit (LDL) Response Time (T-90) 0 100% LEL LEL 30 seconds 0 100% LEL LEL H2 20 seconds 0 25% Vol. 0.1% Vol ppm ppm 0 100% LEL 0 100% LEL ppm 0 5% Vol. 0 50% Vol % Vol. 20 seconds 35 seconds 35 seconds 30 seconds 30 seconds 30 seconds Life Expectancy* 2 to 3 years 3 to 5 years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years 5+ years 5+ years Accuracy Operating Temperature Relative Humidity Location J-box Housing Sensor Housing Approvals Controllers Warranty ±5% of full scale -40 F to 167 F (-40 C to 75 C) RK UL RK- 05 ccsaus ±5% of full scale -40 F to 167 F (-40 C to 75 C) RK UL ±0.5% Vol. O2-4 F to 113 F (-20 C to 45 C) ±5% of full scale -40 F to 104 F (-40 C to 40 C) ±5% of full scale 23 F to 104 F (-5 C to 40 C) 0 99% RH non-condensing ±5% of full scale -4 F to 122 F (-20 C to 50 C) Indoor or outdoor. Explosion-proof for Class 1, Groups B, C, D Cast aluminum, explosion-proof, optional stainless steel J-box available** Stainless steel, explosion-proof ±5% of full scale -4 F to 122 F (-20 C to 50 C) ±5% of -4 F to 122 F (-20 C to 50 C) CSA NRTL CSA NRTL CSA NRTL culus culus culus Compatible with Beacon 110, 200 and 410 controllers One year materials and workmanship * With normal service ** Add SS after RK in model number

19 Direct Connect Sensors (cont d.) Non Explosion-Proof Models Specifications Oxygen Hydrogen Sulfide Carbon Monoxide Toxics Carbon Dioxide O2 H2S CO CO2 (Sensor with J-box) (Sensor only) RK RK* RK RK* RK RK See chart below RK RK See chart below RK RK RK RK RK RK RK RK-10 Sensors Galvanic Cell Electrochemical Electrochemical Electrochemical Infrared Measuring Range 0 25% Vol ppm ppm See chart below ppm 0 5% Vol. 0 50% Vol % Vol. Lower Detectable Limit (LDL) 0.1% Vol. Response Time (T-90) 20 seconds 35 seconds 35 seconds 60 seconds 30 seconds Life Expectancy** 2 years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years Accuracy ±0.5% Vol. O2 ±5% of ±5% of ±5% of ±5% of Operating Temperature Relative Humidity -4 F to 122 F (-20 C to 50 C) -4 F to 122 F (-20 C to 50 C) -4 F to 122 F (-20 C to 50 C) 0 99% RH non-condensing Location Indoor or outdoor, Class 1, Div. 2 J-box Housing Sensor Housing Controllers Warranty Cast aluminum, explosion-proof Stainless steel, explosion-proof 14 F to 104 F (-10 C to 40 C) Compatible with Beacon 110, 200 and 410 controllers One year materials and workmanship -4 F to 122 F (-20 C to 50 C) * Partial pressure sensor for helium (He) applications consult your Air Liquide representative for details ** With normal service Ordering Information for Direct Connect Toxic Gas Sensors Sensor with J-box Sensor without J-box Gas Range RK-NH RK-NH3 Ammonia (NH3) 0 75 ppm RK-AsH RK-AsH3 Arsine (AsH3) ppm RK-Cl RK-Cl2 Chlorine (Cl2) 0 3 ppm RK-HCN RK-HCN Hydrogen Cyanide (HCN) 0 15 ppm RK-PH RK-PH3 Phosphine (PH3) 0 1 ppm RK-SO RK-SO2 Sulfur Dioxide (SO2) 0 6 ppm

20 Direct Connect Sensors (cont d.) Sensors Only and Sensors with J-box Available Accessories Calibration adaptors Flow-through adaptors Remote horns and lights SCOTTY Calibration Kits Splash guards Battery back-ups Dataloggers Direct Connect Wiring Matrix Interface with Beacon 110, 200 and 410 Controllers Sensor Number of Wires to Controller Maximum Distance to Controller 18 AWG Wire LEL/Carbon Dioxide ft. Carbon Monoxide ft. Hydrogen Sulfide ft. Oxygen ft. Toxics ft.

21 Hydrogen-Specific Sensors/Transmitters Models Direct Connect, S2 and M2A Air Liquide offers unique proprietary sensor technologies for hydrogen-specific detection in either % LEL or ppm ranges. By utilizing a proprietary molecular sieve coating that is built into both our catalytic or solid state sensors, false alarms from typical hydrocarbon-interfering gases are essentially eliminated. For the LEL range, a special catalytic sensor is coated with a molecular sieve that eliminates the response to common background gases like IPA, methane, gasoline, etc., while providing a detection range of 0 100% LEL for hydrogen. The hydrogen ppm sensor can reliably detect leaks 20 times smaller than a standard catalytic sensor. This solid state sensor has a molecular sieve coating on the sensing element, which filters out interference from other gases and provides ppm or ppm range. Both the LEL and ppm range sensors are available with S2 transmitters with linear 4-20mA outputs. The LEL range sensor is also available with M2A Series smart transmitter, as well as with our Direct Connect sensor used exclusively with Beacon 110 and 410 controllers. Direct Connect Explosion-Proof Version Benefits/Features Explosion-proof housing and sensor design H2-specific solid state sensor for /2000 ppm H2-specific catalytic sensor for 0 100% LEL Molecular sieve filter built-in, highly specific to H2 Eliminates false alarms from IPA and other gases Provides superior resistance to catalyst poisons 4-20mA transmitter, 24VDC M2A smart transmitter (LEL version only) Direct Connect sensor (LEL version only) Optional stainless steel enclosure (S2/Direct Connect only) Industry Applications Semiconductor Power plants Fuel cell industry R&D applications Gas plants Model S2 Stainless Steel Version Model M2A Explosion-Proof Version Air Liquide Canada - Specialty Gases

22 Hydrogen-Specific Sensors/Transmitters (cont d.) Models Direct Connect, S2 and M2A Specifications Direct Connect S2 (H2-Specific) M2A (H2-Specific) LEL LEL ppm LEL RK RK RK-1000/ RK Detection Range 0 100% LEL 0 100% LEL /2000 ppm 0 100% LEL Accuracy Statement ±5% of reading or ±2% LEL (whichever is greater) ±5% of reading or ±2% LEL (whichever is greater) ±50 ppm or ±10% of reading (whichever is greater) ±5% of reading or ±2% LEL (whichever is greater) Operating Voltage Supplied by controller VDC VDC VDC Current Draw (maximum) 24VDC Signal Output Response Time Operating Environment Location Temperature Relative Humidity Housing Sensor Type Life Expectancy Controls Sensor Current Zero Span Tools Needed N/A N/A -40 F to 167 F (-40 C to 75 C) Cast aluminum, explosionproof, optional stainless steel J-box available* Catalytic combustion with molecular sieve 3 to 5 years with normal service N/A N/A 200mA (power wires), 25mA (signal wires) 3 wires 4mA at 0% LEL, 20mA at 100% LEL linear output 100mA (power wires), 25mA (signal wires) 3 wires 4mA at 0 ppm, 20mA at 1000/2000 ppm linear output 20 seconds to 90% concentration Indoor or outdoor. Explosion-proof for Class 1, Div. 1, Groups B, C, and D -40 F to 167 F (-40 C to 75 C) Cast aluminum, explosionproof, optional stainless steel J-box available* Catalytic combustion with molecular sieve 3 to 5 years with normal service Sets transmitter output to 4mA with 0% LEL output from combustible sensor Sets transmitter output to 20mA with 100% LEL output from combustible sensor 5 95% RH non-condensing Factory set and sealed 14 F to 113 F (-10 C to 45 C) Cast aluminum, explosionproof, optional stainless steel J-box available* Metal oxide semiconductor with molecular sieve Over 5 years typical Sets transmitter output to 4mA with 0 ppm output from sensor Sets transmitter output to 20mA with 2000 ppm hydrogen output from sensor Screw driver and voltmeter used to make adjustments (S2 only), calibration kit 175mA 4-20mA signal, into 500 ohms impedance maximum, corresponding from 0-4 F to 122 F (-20 C to 50 C) Cast aluminum epoxypainted NEMA 4X Catalytic combustion with molecular sieve 3 to 5 years with normal service Nonintrusive using magnet Nonintrusive using magnet Calibration Frequency 6 months 6 months 12 months 6 months Warranty One year for electronics and sensors * Add SS after RK in model number. Specifications subject to change without notice.

23 Diffusion Sensor/Transmitter Model S2 Model S2 gas sensor/transmitters are highly reliable and very cost effective for the detection of common gas hazards. The S2 series from Air Liquide is available for LEL, H2-specific (LEL and ppm), O2, H2S, CO and for a variety of toxic gases. The transmitters for LEL, H2-specific, O2, H2S, CO2 and CO are explosion-proof with flame arresters and approved for use in hazardous areas (Class 1, Div. 1, Groups B, C, D). An optional non explosion-proof version is available for O2, H2S, CO and CO2 detection in non-hazardous atmospheres. LEL sensors are available using catalytic bead and infrared technologies. 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 1, Div. 2 hazardous locations. Sensors are available for NH3, SO2, PH3, AsH3 and HCN. S2 transmitters can be used either indoors or outdoors. The flame arresters for the explosion-proof versions utilize a patented coating which make them water repellent. Splash guards are also available for use in very wet environments. An optional stainless steel junction box is available for corrosive environments. Explosion-Proof O2 H2S CO All S2 transmitters are designed to interface with Beacon 110, 200, 410 and 800 controllers, or with PLC and DCS systems. Benefits/Features Available gases include LEL, H2S, CO, ppm H2 and CO2, as well as toxic gases like NH3, SO2, HCN and more Infrared sensor for combustibles and CO2 H2-specific now available Patented water-repellent sensor coating 4-20mA output Explosion-proof construction Optional stainless steel junction box is available Explosion-Proof LEL NH3 Sensor

24 Model S2 Diffusion Sensor/Transmitter (cont d.) Explosion-Proof Models Specifications General Purpose H2-Specific Oxygen Hydrogen Sulfide Carbon Monoxide Methane Hydrocarbons Carbon Dioxide LEL LEL ppm O2 H2S CO CH4 HC CO RK RK RK RK RK RK RK RK RK RK-CH RK-HC RK RK RK RK-10 Sensors Catalytic Catalytic Metal oxide semiconductor Galvanic cell Electrochemical Electrochemical Infrared Infrared Infrared Measuring Range 0 100% LEL 0 100% LEL ppm ppm 0 25% Vol ppm ppm 0 100% LEL 0 100% LEL ppm 0 5% Vol. 0 50% Vol % Vol. Lower Detectable Limit (LDL) 0.1% Vol. Current Draw (max.) 24VDC Response Time (T-90) 70mA (power wires), 25mA (signal wires), 3 wires 25mA max, 2 wires 60mA (power wires), 25mA (signal wires), 3 wires 30 seconds 20 seconds 45 seconds 20 seconds 45 seconds 30 seconds 30 seconds 30 seconds 30 seconds Life Expectancy* 2 to 3 years** 3 to 5 years 5+ years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years 5+ years 5+ years Accuracy (whichever is greater) ±5% of reading or ±2% LEL ±5% of reading or ±2% LEL ±10% of reading or ±5% of ±0.5% Vol. O2 ±5% of reading or ±2 ppm H2S ±5% of reading or ±5 ppm CO ±5% of reading or ± full scale ±5% of reading or ± full scale ±5% of reading or ± full scale Operating Temperature Relative Humidity Location J-box Housing Sensor Housing -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) -4 F to 113 F (-20 C to 45 C) -40 F to 104 F (-40 C to 40 C) 0 99% RH non-condensing 23 F to 104 F (-5 C to 40 C) Indoor or outdoor. Explosion-proof for Class 1, Groups B, C, D -40 F to 122 F (-40 C to 50 C) Cast aluminum, explosion-proof, optional stainless steel J-box available*** Stainless steel, explosion-proof -40 F to 122 F (-40 C to 50 C) -40 F to 122 F (-40 C to 50 C) Operating Voltage 11VDC 30VDC 11VDC 30VDC 19VDC 30VDC 19VDC 19VDC 19VDC 11VDC 30VDC 1 30VDC 1 30VDC 1 30VDC 11VDC 30VDC 11VDC 30VDC Output 4-20mA signal Zero Controls Sets transmitter output to 4mA with zero output from sensor Span Controls Sets transmitter output to proper level when span gas is applied Approvals RK UL RK-05 ccsaus RK UL RK-05 ccsaus UL CSA NRTL CSA NRTL CSA NRTL culus culus culus Controllers Warranty Compatible with Beacon 110, 200, 410 and 800 controllers, as well as PLC and DCS systems One year materials and workmanship * With normal service ** With normal exposure to flammable gases ***Add SS after RK in model number OHMS impedance maximum

25 Model S2 Diffusion Sensor/Transmitter (cont d.) Non Explosion-Proof Models Specifications Oxygen Hydrogen Sulfide Carbon Monoxide Toxics Carbon Dioxide O2 H2S CO CO RK RK RK See chart below RK RK RK RK-10 Sensors Galvanic cell Electrochemical Electrochemical Electrochemical Infrared Measuring Range 0 25% Vol ppm ppm See chart below ppm 0 5% Vol. 0 50% Vol % Vol. Lower Detectable Limit (LDL) 0.1% Vol. Response Time (T-90) 20 seconds 45 seconds 30 seconds 60 seconds 30 seconds Current Draw (max) 24VDC 25mA max, 2 wires 25mA max, 2 wires 25mA max, 2 wires 25mA max, 2 wires 60mA (power wires), 25mA (signal wires), 3 wires Life Expectancy* 2 years 2 to 3 years 2 to 3 years 2 to 3 years 5+ years Accuracy (whichever is greater) Operating Temperature Relative Humidity ±0.5% Vol. O2-4 F to 122 F (-20 C to 50 C) 0 99% RH non-condensing ±5% of reading or ±2 ppm H2S -4 F to 122 F (-20 C to 50 C) 0 99% RH non-condensing ±5% of reading or ±5 ppm CO -4 F to 122 F (-20 C to 50 C) 0 99% RH non-condensing ±10% of reading or ±5% of 14 F to 104 F (-10 C to 40 C) 5 95% RH Location Indoor, Class 1, Div. 2 J-box Housing Cast aluminum, explosion-proof Sensor Housing Plastic or aluminum Operating Voltage 19VDC 30VDC Output 4-20mA signal Zero Controls Sets transmitter output to 4mA with zero output from sensor Span Controls Sets transmitter output to 20mA with output from sensor Controllers Compatible with Beacon 110, 200, 410 and 800 controllers, as well as PLC and DCS systems Warranty One year materials and workmanship ±5% of reading or ± -40 F to 122 F (-40 C to 50 C) 0 99% RH non-condensing Ordering Information for Non Explosion-Proof Toxic Assemblies * With normal service Gas Range RK-NH3 Ammonia (NH3) 0 75 ppm RK-AsH3 Arsine (AsH3) ppm RK-HCN Hydrogen Cyanide (HCN) 0 15 ppm RK-PH3 Phosphine (PH3) 0 1 ppm RK-SO2 Sulfur Dioxide (SO2) 0 6 ppm

26 Diffusion Sensor/Transmitter (cont d.) Model S2 Available Accessories Calibration adaptors Flow-through adaptors Remote horns and lights SCOTTY calibration kits Splash guards AC power supply Dataloggers S2 Wiring Matrix Direct Interface with Beacon 110, 200, 410 and 800 Controllers Sensor Number of Wires to Controller Maximum Distance to Controller 18 AWG Wire 16 AWG Wire 14 AWG Wire LEL/IR/Carbon Dioxide ft ft ft. Carbon Monoxide ft ft ft. Hydrogen Sulfide ft ft ft. Oxygen ft ft ft. Toxics ft ft ft.