All Products

4000-005 GMA400-MT 16/24 GMA400 Controller, for 24 measuring points by GfG

Fixed gas detection systems, consisting of one or more central controllers and transmitters, are used in applications requiring continuous monitoring of toxic gases, combustible gases and vapors or oxygen. In situations which make standard solutions hit their limits because of the number of monitored measuring points or zones, the GMA400 controller provides new options for creating complex gas detection systems.

Up to 16 analog or 128 digital GfG transmitters can be connected to one GMA400 controller. An additional 32 virtual transmitters monitor calculated parameters, such as mean values, minimum / maximum values and environmental influences. The compact DINrail-mounted controller (T35) is installed in control cabinets or wallmounted housings.

Digital Communication on Analog Lines

ACDC is a patented technology which allows transmitters to communicate information that goes beyond the plain measured value to the central evaluation unit, using 3-wire 4-20mA line that were already in place. It also receives digital signals from the controller in return. This solution is a significant benefit to your system, as it allows you to use existing analog loops for high-speed transmission of digital data.

Using the analog cabling you already had will allow you to significantly reduce the costs of updating your system – while controllers and ACDC-capable transmitters will still be able to communicate like in a digital system.

The benefits of digital communication

• Bidirectional transmission of additional data, such as mean values or status notifications
• Maintenance of transmitters which are difficult to access using remote calibration
• Higher accuracy and immunity to interferences

Up to 16 ACDC-capable transmitters can be connected directly to the ACDC-capable GMA400. The GMA400-AT24 module lets you upgrade that number to 128. This makes the GMA400 a perfect choice for integrating modern gas detection systems into old but functional infrastructures, as well as for retrofitting or expanding them.

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 128 physical transmitters and up to 32 virtual measuring points

Equipment:

• 8 integrated relays for safety concepts, fault notifications and maintenance, can be expanded by 128 additional relays
• Connection either digital (Modbus), analog or ACDC (both using 4-20 mA)
• High-resolution 2.4-inch color display
• Network interface for Modbus TCP integration and web access
• Detailed view, group view or overview options

Optional:

• Relay modules for 16 additional relays each (up to 128)
• ACDC module for 24 additional analog / ACDC transmitters (up to 128)

Approvals / certifications:

• SIL (pending)

*Please note we can only ship RKI products to customers within the United States

BZ1-1445510111 Radius BZ1 Area Monitor, CO DualSense, NO2 DualSense, NO2, SO2 DualSense, Without Pump, UL/CSA, LENS™ Wireless, English by Industrial Scientific

When it comes to choosing equipment to protect your worksite from gas hazards, rely on the Radius® BZ1 Area Monitor. No other area monitor protects your workers longer in the field with less setup, user training, and time in the shop.

• Detect up to seven gases using 22 sensor options including PID
• Longest running area monitor with a typical run time of 7 days (168 hours)
• Extended Run Time Power Supply can extend battery to over 1 month
• Ultra-bright blue and red lights and attention-grabbing alarms with distinctive tones
• Audible alarms sound at 108 dB at 1 m to cut through high-noise environments
• Largest display of any area monitor on the market
• Intuitive text-based navigation and configuration
• Customizable alarm action messages such as "EVACUATE" or "VENTILATE"
• LENS™ Wireless enables communication between area monitors and Ventis® Pro5 personal monitors
• All-weather sensor deployment and 360-degree gas path for more accurate detection
• DualSense® Technology increases worker safety by using two sensors to detect the same gas

GS-AR-B-006-G Gasman Single Gas Monitor, 0-100ppm Ammonia, Non Rechargable Battery (single use), German ATEX by Crowcon

For over 40 years, Crowcon Detection Instruments has produced state of the art gas detection devices for personal and industrial use. Building upon their reputation for reliable and innovative gas monitoring products, Crowcon introduces the Gasman personal gas monitor. Its lightweight and compact design is convenient for jobsites where workers need not be weighed down by excessive bulk and equipment. The unit conveniently clips to a pocket or helmet and operates continuously.

The Gasman personal gas monitor has numerous convenient features such as:

• One button technology
• Backlit LCD display
• Durable polycarbonate casing
• Quick response triple alert system
• Compact and lightweight design

Easy to Use

The Gasman s true one button technology is an ideal and simple design. The large glove friendly button is mounted on the front of the unit for easy access and controls all of the unit s programmable features. Also on the front, the Gasman s easy to read backlit LCD screen indicates gas readings and the battery status. The simple screen provides a clear indication of the unit s operation status. It will also alert the user 30 days in advance of when a calibration test is due. With a simple and intuitive design, Crowcon has produced a gas detector that reduces the complexities of workplace safety, and ensures workers in a straightforward manner that their equipment is on and operational.

Triple Alarm System

This portable single gas detection system features a triple alarm system that is sure to alert the user and anyone in the vicinity. The visible alarm utilizes a dual red and blue flashing LED light, and the unit houses an internal vibrating alert system. These two indicators allow for visual recognition in loud environments and working conditions. The alarm system also features a programmable audible alarm at 95 decibels. The unit is capable of a variety of alarm tones, and users can select which tone may be best for the individual workplace setting. The triple alarm system with multiple sensory indicators is sure to be noticed in almost any work environment.

Specifications

The Gasman single gas monitor is lightweight and compact, weighing less than 135 grams and with dimensions of 90 x 48 x 24 mm. The unit is available with a wide variety of gas sensors which feature various detection and alarm levels. The unit also features a quick response time of 20 seconds for flammable and toxic gases or 10 seconds for oxygen. Its datalogging feature has approximately 900 hours of storage and all events are time stamped. The battery life for this unit is incredible with 12 hours of runtime on a Rechargeable battery battery or up to 2 years on a non-Rechargeable battery.

MX6-N023R211 MX6 iBrid Multi-Gas Monitor, CH4 IR, H2S,O2,PID, LE,P,E by Industrial Scientific

The MX6 iBrid® is more than an intelligent hybrid of Industrial Scientific's best monitoring technologies—it's the most adaptable six-gas monitor on the market. With hundreds of possible sensor combinations, and a robust list of available configuration settings, the MX6 iBrid is ready to monitor oxygen, toxic and combustible gas, and volatile organic compounds (VOCs).

As your work changes, so can your MX6 iBrid. It uses five sensor slots to detect up to six gases. Each of those sensor slots accepts a variety of sensors, which means you can use the instrument with a PID sensor one day and an infrared sensor the next. What's more, settings allow you to adapt the instrument's behavior for your application. If you need to use a benzene PID response factor for one application, and butadiene for others, the familiar menu structure will allow you to quickly change settings.

The rugged MX6 iBrid carries our Guaranteed for Life™ warranty and is compatible with DSX™ Docking Stations. With a DSX Docking Station, maintenance is simplified and data becomes more than a spreadsheet filled with logged readings. Proactively manage your gas detection fleet—track trends, know when instrument maintenance will be required, and understand how your MX6 iBrid instruments are being used.

• 24 "Plug-and-Play" field-replaceable sensors including PID and Infrared options
• Up to 6 gases monitored simultaneously
• Simple, user-friendly, customizable, menu-driven navigation
• Five-way navigation button
• Durable, concussion-proof overmold
• Optional integral sampling pump with strong 30.5 meter (100 feet) sample draw
• Full-color graphic LCD is highly visible in a variety of lighting conditions
• Powerful, 95 dB audible alarm

LabSen 835 Glass-body pH/Temp. Electrode for Strong Acid Samples and HF (Hydrofluoric) Acid by Apera

Crafted with proprietary sensor technologies and premium materials from Switzerland, LabSen 835 pH/temp. Electrode is designed for high-precision pH measurement of liquids containing strong acids or hydrofluoric acids.

• LabSen HF-type membrane is resistant to hydrofluoric corrosion and minimizes acidic error
• HF Measurement — LabSen 835 pH electrode is capable of measuring solution containing HF acid for up to 1000 times. (measurement time<1 min, and HF concentration should be less than 0.1mol/L or 2000 ppm)
• Open junction and polymer electrolyte for full contact with samples while eliminating junction clogs
• Silver Ion Trap reference system outperforms ordinary Ag/AgCl systems by maintaining reference potential stability over time with Ag+ free environment, which significantly extends the electrode's service life.
• Sturdy glass membrane, 10 times stronger than traditional glass membranes
• The built-in temperature sensor enables automatic temperature compensation.

TPPLEAWD8DNNNNN Touchpoint Plus Wall Mount Expansion Unit, AC115/220 150W, 4 x mA + 4 x mV input with 24 x relay output by Honeywell Analytics

Touchpoint Plus brings a whole new control experience to your small system of gas detectors. Touchpoint Plus is an easily configurable, wall mounted control system that supports up to sixteen channels of gas detection. Its modular approach enables you to take control and configure what you need for a wide range of applications.

The signature feature of the Touchpoint line is a user-friendly touchscreen interface, and the Touchpoint Plus takes it to a new level. With this unique interface, it's easier than ever to see the status of your system at a glance - maximizing the time you have to make the right decisions. The intuitive, multilingual interface, simplifies operation and reduces training requirements. The full colour traffic light style status indication provides clarity from a distance too.

Touchpoint Plus includes a comprehensive set of outputs as standard including common alarms and dedicated drives for remote audiovisual indicators. Its modularity enables you to customise your system to meet your specific application requirements. Selecting the right detector for use with your controller can deliver significant savings in startup costs and on-going operations. Our global partner network and dedicated application specialists are able to help make the right choices for your industry.

With everything at your fingertips, you can take ownership of your system and operate it with confidence, ensuring the safety of your people and productivity of your site.

Delivering reliable control

• Honeywell reliability from the most trusted experts in gas detection
• Built-in battery backup for constant uptime
• Robust, shockproof housing for a wide range of industrial environments

Flexible capabilities

• Compatible with the full range of Honeywell gas detectors
• Powered audiovisual alarms simplify field installation
• Configuration includes easy grouping and voting alarm logic without specialist knowledge
• Next-generation compatibility
• Optional Modbus output for integration with a higher level system

Providing ease and efficiency

• Quick and easy installation, configuration, commissioning and maintenance
• Easy diagnostics, data and reporting
• Minimised training time
• Large colour touchscreen LCD
• Multilingual capabilities
• Green-yellow-red status at a glance

GD-K884X-SI2H6 GD-K88AI Smart Transmitter in NEMA 4X Housing, Disilane (Si2H6), 0-15 ppm, IS Type by RKI Instruments

The GD-K88Ai is a diffusion style toxic gas detection transmitter ideally suited to meet a variety of toxic gas detection needs. You can choose from a wide range of electrochemical toxic gas sensors to install in this model. The GD-K88Ai includes easy to read LCD display and push button controls for calibration. When it is used with optional intrinsic safety barriers the GD-K88Ai is safe for use in hazardous locations. The low profile design is only 1.9 inches thick and is easy to install. The hinged housing makes it easy to maintain. This transmitter can be installed with any RKI controller, or integrated to existing PLC or DCS system via 4-20mA output (24VDC two-wire, loop powered).

At the heart of any gas detector is the sensor. The sensors for the GD-K88Ai are aged and tested over a one to three month period, typically resulting in a three to five year life span, providing a lower cost of ownership for your gas detection system. These fast-responding sensors are robust electrochemical type that feature higher sensitivity and selectivity.

With over 75 years of sensor technology experience, RKI has the knowledge and capability to provide the most advanced detection techniques and manufacture the most stable and long lasting sensors in the world. As a result the GD-K88Ai is one of the most stable and long lasting toxic transmitters on the market.

Features

• Diffusion style head
• Digital readout of gas name and concentration
• External control buttons for easy maintenance
• Intrinsically safe design
• Quick response sensors
• Many toxic sensors to choose from
• 3 to 5 year typical sensor life
• Low cost of ownership

Applications

• Semiconductor manufacturing
• Petrochemical plants
• Refineries
• Water & wastewater treatment plants
• Pulp & paper mills
• Gas, telephone, & electric utilities
• Steel
• Automotive
• Refrigeration
• Food Storage
• Power plants

*Please note we can only ship RKI products to customers within the United States

TPPLBAWV4S4NNTN Touchpoint Plus Basic Wall Mount Controller, AC115/220 150W, 4 x mV input with 12 x relay output, 4 x mA output, MODBUS TCP by Honeywell Analytics

Touchpoint Plus brings a whole new control experience to your small system of gas detectors. Touchpoint Plus is an easily configurable, wall mounted control system that supports up to sixteen channels of gas detection. Its modular approach enables you to take control and configure what you need for a wide range of applications.

The signature feature of the Touchpoint line is a user-friendly touchscreen interface, and the Touchpoint Plus takes it to a new level. With this unique interface, it's easier than ever to see the status of your system at a glance - maximizing the time you have to make the right decisions. The intuitive, multilingual interface, simplifies operation and reduces training requirements. The full colour traffic light style status indication provides clarity from a distance too.

Touchpoint Plus includes a comprehensive set of outputs as standard including common alarms and dedicated drives for remote audiovisual indicators. Its modularity enables you to customise your system to meet your specific application requirements. Selecting the right detector for use with your controller can deliver significant savings in startup costs and on-going operations. Our global partner network and dedicated application specialists are able to help make the right choices for your industry.

With everything at your fingertips, you can take ownership of your system and operate it with confidence, ensuring the safety of your people and productivity of your site.

Delivering reliable control

• Honeywell reliability from the most trusted experts in gas detection
• Built-in battery backup for constant uptime
• Robust, shockproof housing for a wide range of industrial environments

Flexible capabilities

• Compatible with the full range of Honeywell gas detectors
• Powered audiovisual alarms simplify field installation
• Configuration includes easy grouping and voting alarm logic without specialist knowledge
• Next-generation compatibility
• Optional Modbus output for integration with a higher level system

Providing ease and efficiency

• Quick and easy installation, configuration, commissioning and maintenance
• Easy diagnostics, data and reporting
• Minimised training time
• Large colour touchscreen LCD
• Multilingual capabilities
• Green-yellow-red status at a glance

TPPLBDWV8D8NNNN Touchpoint Plus Basic Wall Mount Controller, DC Powered, 8 x mV input with 24 x relay output, 8 x mA output by Honeywell Analytics

Touchpoint Plus brings a whole new control experience to your small system of gas detectors. Touchpoint Plus is an easily configurable, wall mounted control system that supports up to sixteen channels of gas detection. Its modular approach enables you to take control and configure what you need for a wide range of applications.

The signature feature of the Touchpoint line is a user-friendly touchscreen interface, and the Touchpoint Plus takes it to a new level. With this unique interface, it's easier than ever to see the status of your system at a glance - maximizing the time you have to make the right decisions. The intuitive, multilingual interface, simplifies operation and reduces training requirements. The full colour traffic light style status indication provides clarity from a distance too.

Touchpoint Plus includes a comprehensive set of outputs as standard including common alarms and dedicated drives for remote audiovisual indicators. Its modularity enables you to customise your system to meet your specific application requirements. Selecting the right detector for use with your controller can deliver significant savings in startup costs and on-going operations. Our global partner network and dedicated application specialists are able to help make the right choices for your industry.

With everything at your fingertips, you can take ownership of your system and operate it with confidence, ensuring the safety of your people and productivity of your site.

Delivering reliable control

• Honeywell reliability from the most trusted experts in gas detection
• Built-in battery backup for constant uptime
• Robust, shockproof housing for a wide range of industrial environments

Flexible capabilities

• Compatible with the full range of Honeywell gas detectors
• Powered audiovisual alarms simplify field installation
• Configuration includes easy grouping and voting alarm logic without specialist knowledge
• Next-generation compatibility
• Optional Modbus output for integration with a higher level system

Providing ease and efficiency

• Quick and easy installation, configuration, commissioning and maintenance
• Easy diagnostics, data and reporting
• Minimised training time
• Large colour touchscreen LCD
• Multilingual capabilities
• Green-yellow-red status at a glance

MX6-LJB35211 MX6 iBrid Multi-Gas Monitor, LEL (Methane), CO/H2S, HCN, O2, SO2, Lithium-ion Extended Runtime battery (UL/CSA/ATEX/IECEX), Aspirated (pump), English by Industrial Scientific

The MX6 iBrid® is more than an intelligent hybrid of Industrial Scientific's best monitoring technologies—it's the most adaptable six-gas monitor on the market. With hundreds of possible sensor combinations, and a robust list of available configuration settings, the MX6 iBrid is ready to monitor oxygen, toxic and combustible gas, and volatile organic compounds (VOCs).

As your work changes, so can your MX6 iBrid. It uses five sensor slots to detect up to six gases. Each of those sensor slots accepts a variety of sensors, which means you can use the instrument with a PID sensor one day and an infrared sensor the next. What's more, settings allow you to adapt the instrument's behavior for your application. If you need to use a benzene PID response factor for one application, and butadiene for others, the familiar menu structure will allow you to quickly change settings.

The rugged MX6 iBrid carries our Guaranteed for Life™ warranty and is compatible with DSX™ Docking Stations. With a DSX Docking Station, maintenance is simplified and data becomes more than a spreadsheet filled with logged readings. Proactively manage your gas detection fleet—track trends, know when instrument maintenance will be required, and understand how your MX6 iBrid instruments are being used.

• 24 "Plug-and-Play" field-replaceable sensors including PID and Infrared options
• Up to 6 gases monitored simultaneously
• Simple, user-friendly, customizable, menu-driven navigation
• Five-way navigation button
• Durable, concussion-proof overmold
• Optional integral sampling pump with strong 30.5 meter (100 feet) sample draw
• Full-color graphic LCD is highly visible in a variety of lighting conditions
• Powerful, 95 dB audible alarm

4400 Link-A-Light Light Head (6000 lumen linkable light head for ordinary location. choose cord (up to 30') and mounting options separately) by Western Technology

Western Technology, the recognized leader in rugged portable lighting for hazardous locations, introduces our LINKaLIGHT™ system for ordinary locations. The LINKaLIGHT™ is a LED Wide Area Stringer Light system that connects end-to-end. Just screw in the interconnecting cords to the light heads to built out your light system.

System Features

This system allows the operator to securely position multiple light heads in a string light configuration, using only 1 power supply. Each light head emits a wide floodlight projection and boast up to 6,000 Lumens, while only drawing less than 1amp. You have the flexibility of adding or removing light heads to extend up to 250 ft. In addition, each light head has a dimmer function for proper illumination of variable size workspaces.

Old Part Number: 2517100N
New Part Number: J2517100PN

724-156 Eagle 2 Portable Monitor, LEL(CAT)/HC(IR Autoranging %LEL/%vol)/Oxy/H2S by RKI Instruments

Continuing in its legacy of durable and reliable gas detection and monitoring systems, RKI Instruments is proud to offer a new product in its popular Eagle portable gas detector series. The Eagle 2 can monitor up to 6 different gases and is equipped with several exclusive features that can only be found with the Eagle series. In addition, its large glove friendly push buttons and LCD screen ensure an ease of use when onsite. Rated intrinsically safe, the Eagle 2 is equipped with state of the art technologies that are not available with other competitive gas detectors and monitors.

Specialty Sensors

The Eagle 2 has a variety of available specialty sensors. Workers can use a photoionization detector for low or high range VOC detection and Fence Electrode Technology for humidity and contamination resistance. An infrared sensor is available for Co2, % LEL CH4, % Volume CH4, % LEL HC, and % Volume HC. Thermal conductivity sensors are available for % Volume H2 and % Volume CH4. The unit is also compatible with the smart plug and play toxic sensors for the detection of NH3, AsH3, CI2, HCN, PH3, and SO2. With the wide variety of sensors and gas detection available, the Eagle 2 can be customized to meet almost all worksite gas detection needs.

Exclusive Features

The monitor has a long internal pump that can draw samples for up to 125 feet. The pump features a low flow auto shut off and alarm. This allows operators to respond swiftly from a safe distance. The unit is multilingual with 5 different language preferences, and features an alkaline battery life of 18 hours or a NiMH life of 20 hours. To protect the integrity of the device and the configurations, the unit can be password protected. The Eagle 2 also has standard data logging capabilities for easy research, evaluation, and site monitoring. To reduce calibration costs and time, the unit features an automatic calibration option and a single gas calibration option.

The Eagle 2 is heavily protected from environmental conditions by a weather proof, chemical resistant RFI/EMI coated high impact polycarbonate/PBT blend enclosure. The enclosure also renders the unit water and dust resistant. Because of the enclosure, the Eagle 2 can function in 2 inches of water without leakage.

Eagle 2 Specifications

The portable and durable unit is lightweight at less than 4 pounds. Its dimensions are suitable for convenient carrying (9.5 L x 5.25 W x 5.875 H), and it features a conveniently placed durable top handle. The large easy to read display has a polyurethane overlay backlights on demand and when the alarm is activated. The 2 alarm channels are fully adjustable for the user and can be password protected. With a 95 dB buzzer and 4 high intensity LEDs, the alarm is sure not to be missed. The Eagle 2 is standard with a 2 year warranty for material and workmanship and a 1 year warranty for PID sensor.

*Please note we can only ship RKI products to customers within the United States

TPPR-HF-FS-LRMXXN Floor Standing Cabinet with Front Access 2000Hx800Wx600D includes Controller with HMI, PCBs, SD Card, Redundant Control Center Board, Modbus® Interface Board, w/o HON Logo, natural ventilation, w/o power distribution by Honeywell Analytics

Honeywell's Touchpoint Pro makes gas control system design, installation, configuration and operation simple. Touchpoint Pro uses a 'building block' approach, providing unrivalled flexibility. The building block approach employed by Touchpoint Pro delivers real value by being able to adapt to each unique system requirement. Ease of use and intuitive configuration ensures that installation, set-up and ongoing maintenance costs are reduced, providing a 'no compromise' solution designed to reduce the cost of on-site safety.

Flexible architecture

Touchpoint Pro has been designed to deliver flexibility, allowing the system to be freely configured to meet customers' varying needs. Touchpoint Pro's modularity means that any system topology can be built, including centralised, distributed I/Os, or a mix of both.

24/7 visibility of system status

Touchpoint Pro's central controller has a Webserver interface, which can be accessed when it is connected to a network, allowing users to remotely view status and event history, and acknowledge, reset or inhibit channels. This feature offers the possibility of system monitoring and data analysis from a remote location using multiple devices including tablets, smart phones and remote computers.

Simple installation and maintenance

Using a simple building block technique to create your system, Touchpoint Pro offers multiple features that simplifies installation, setup and ongoing maintenance. A key feature to this is the preloaded sensor catalogue, which contains a complete listing of all Honeywell Analytics' gas sensors, each with a full default configuration setting. A user can choose to configure input channel settings from the sensor catalogue, resulting in a quick and simple three step configuration process. The rest of the configuration will be loaded automatically.

Wide selection of inputs/outputs accepted

The Touchpoint Pro Input/Output plug-in modules can be combined up to a maximum of 16 input modules (64 channels) and 32 output modules (128 channels). Modules can be located in any Touchpoint Pro enclosure and power distribution is via the communication/power Rail. Touchpoint Pro accepts analogue, digital and relay modules making it one of the most flexible controllers available.

Intuitive user interface

The heart of the Touchpoint Pro is the central controller, which includes the user interface. The user interface features a full colour LCD touch screen, and provides engineers with an intuitive solution to system set-up and deployment. Easily accessible icons, supported by drop-down menus ensure that even the most complex of system configurations can be commissioned with efficiency.

Aside from ease of use, Touchpoint Pro's user interface also includes some valuable aspects that help engineers save time, whilst setting up and commissioning a system.

Features & Benefits

• Webserver ensures 24/7 system status visibility for constant safety
• Flexible system architecture to meet specific site needs
• Easily accessible system status that can be seen at a glance

Quick Specs

• Up to 64 channels of detection and 128 output channels
• Digital and analogue inputs available
• Mulitple mounting possibilities
• Touchscreen user interface

BZ1-L23C001211 Radius BZ1 Area Monitor, LEL (Methane), H2S, O2, H2, Pump, ATEx/IECEx, LENS Wireless, English by Industrial Scientific

When it comes to choosing equipment to protect your worksite from gas hazards, rely on the Radius® BZ1 Area Monitor. No other area monitor protects your workers longer in the field with less setup, user training, and time in the shop.

• Detect up to seven gases using 22 sensor options including PID
• Longest running area monitor with a typical run time of 7 days (168 hours)
• Extended Run Time Power Supply can extend battery to over 1 month
• Ultra-bright blue and red lights and attention-grabbing alarms with distinctive tones
• Audible alarms sound at 108 dB at 1 m to cut through high-noise environments
• Largest display of any area monitor on the market
• Intuitive text-based navigation and configuration
• Customizable alarm action messages such as "EVACUATE" or "VENTILATE"
• LENS™ Wireless enables communication between area monitors and Ventis® Pro5 personal monitors
• All-weather sensor deployment and 360-degree gas path for more accurate detection
• DualSense® Technology increases worker safety by using two sensors to detect the same gas