Collection: GfG Fixed Gas Detection Systems - Controllers

The wall-mounting housing GMA200-RTW was specially developed for the relay modules GMA200-RT and GMA200-RTD. Where top-hat rail mounting is not possible or not required, a relay module in a GMA200-MW housing can be mounted anywhere on the wall. The relay modules extend the functional range of the GfG controllers by 16 relays each with potential-free change-over contacts.

The GMA200-RTW housing offers additional protection against dirt and dust. It is optionally offered with 230 volt power supply or without integrated power supply.

 

Key features at a glance:

• Suitable for the relay modules GMA200-RT and GMA200-RTD
• Wall-mounted housing in the design of the GMA200-MW
• Available with power supply unit (230 V) or without power supply unit

A gas detection computer like our proven GMA200 is the heart of a gas detection system. It evaluates the measured values of the connected transmitters centrally and usually also supplies them with voltage. A disturbance in the power supply of the controller consequently results in a complete failure of the gas monitoring system. Even with the shortest interruptions, the start-up times of the affected devices mean that hazards caused by gases are not controlled for a longer period of time.

Control and minimize risks
The GMA200-UPS prevents gas detection system failure by supplying power to the GMA200 as soon as the normal power supply is interrupted, even for a brief moment. As a result, the areas being monitored are never unsecured. With the GMA200-UPS, no critical gas concentration goes undetected in the event of a fault in the power supply network that powers the gas detection system, including the transmitters and alarm devices.

Equipment and versions
The GMA200-UPS is installed in a GMA200-MW16 housing (dimensions: 270 x 290 x 98 mm | W x H x D) and is wall-mounted. Automatic charging of the integrated lead-acid batteries for the emergency power supply is provided by an integrated 24 V DC power supply unit with 50 Watt output. The uninterruptible power supply is offered in two versions that can bridge a power failure for either one or three hours (each at a maximum of 1.8 A).

 

Key features at a glance:

• Suitable for GMA200 series controllers
• Secures the power supply of gas detection systems in case of malfunction or power failure
• Different versions: 3.4 Ah for 1 hour or 5.4 Ah for 3 hours bridging time (each at max. 1.8 A)
• Built-in in GMA200-MW16 housing for wall-mounting (incl. 24 V DC power supply)

Even if the controllers and transmitters in a gas detection system each have an integrated display for measured values, a central and bundled visualization of the entire gas detection system brings great advantages. In this way, the measured values and alarm statuses of transmitters that are connected to different controllers can also be displayed on one screen. This is especially important if the controllers are located in different rooms or buildings. In addition, the screen can be installed in a safe location, away from hazardous areas or hazards caused by gases.

Clear presentation
To enable measured values to be read centrally and in a safe place, we offer TFT displays in 8, 15 and 21 inch sizes. They have a touch screen function and are suitable for easy wall mounting or control cabinet installation. The GMA200-VS software provides a particularly good overview of all measuring points. All connected controllers and all transmitters are displayed comprehensively. The clear color scheme makes it possible to quickly assess the situation at any time:

• Green: Everything in order (no alarm and no malfunction).
• Yellow: Special status (e.g. maintenance or malfunction)
• Orange: Alarm 1 (pre-alarm)
• Red: Alarm 2 or 3 (main alarm)

Within the user interface it is possible to switch between a general overview of all controllers and a detailed individual view. In addition to the room, controller and transmitter designations, the currently measured gas concentration, the gas type, the measuring range and the configured alarm thresholds are displayed. Alarms can be acknowledged via the reset function.

Easy-to-use touch screen
The visualization displays of the GMA200 TFT series are full-fledged touch-screen computer interfaces. The resolution is up to Full HD (1,920 x 1080 pixels), depending on the screen diagonal. Smooth operation is ensured by 4 gigabytes of RAM and a quad-core processor with silent cooling without a fan. The integrated GMA200-VS software can also be purchased as a single workstation license (GMA200-VSL) to display measurement values on a computer or laptop.

Available sizes

Screen diagonal	Resolution	MW16 housing	Panel mounting
8“ (20,3 cm)	800 x 600 px	yes	yes
15“ (38,1 cm)	1024 x 768 px	no	yes
21,5“ (54,6 cm)	1920 x 1080 px	no	yes

Well protected and with various connection options
The case is made of die-cast aluminum, the frame of aluminum. The front’s protection class is IP65, which means the display can withstand tough external operations like splash water or dust. With a hardness level of 7H, the display glass is insensitive to scratches. The TFT screen is powered by a 24 V DC power supply unit. For integration into a gas detection system, one of the USB ports can be used in conjunction with an RS-485 adapter, as well as the GMA bus or an Ethernet port.

 

Key features at a glance:

• Suitable for the gas detection computers of the GMA200 series
• Clear display of measured values and incidents
• Visualization software GMA200-VS included
• Touch screen function
• Available in 8, 15 and 21.5 inch sizes for panel mounting
• Also available as 8-inch screen in GMA200-MW16 wall-mount housing (incl. power supply)

Most gas sampling systems are bulky, heavy and expensive. To offer a compact all-in-one solution that can still be individually and modularly expanded, we developed the GMA200-MGSS. With the capabilities of a complex gas sampling system, it is still not larger than our GMA200 series controllers in a wall-mounted housing.  The MGSS is easy to mount, easy to maintain, safe and reliable.

Adaptable for difficult conditions
The modular concept allows perfect adaptation to the requirements of the plant to be monitored. Whether a simple solution for one gas or a full GSS for sequential monitoring of three gases from six intake points is required, the MGSS is the best choice for measuring gases in hot, humid, cold or dusty environments. To ensure accurate monitoring as well as long sensor life, a water barrier, condensate trap and suitable cooling coils are available as accessories. Equipped with a flame arrester, even samples from an Ex zone can be aspirated and analyzed.

Suitable for a wide range of gases
The sensor block can accommodate up to three sensors. Two electrochemical and/or infrared sensors and one catalytic combustion sensor can be integrated to monitor oxygen concentration, toxic gases and combustible gases down to the lower explosion limit. An overview of the measurable gases can be found at the bottom of this page.

Expansion possibilities
The MGSS has eight internal relays, six of which are individually programmable. Up to four relay modules GMA200-RT or GMA200-RTD (16 relays each with one normally open contact) can be connected via the GMA bus. At the maximum expansion level, 70 freely programmable relays are possible. In addition, up to twelve external transmitters can be connected via the digital RS-485 interface if needed. The data logger stores all measured values and events on a microSD card for subsequent evaluation.

Quick assessment of the hazardous situation
The current measured values, operating status and alarm level can be read directly from the MGSS, which features a color backlit display and status LEDs for this purpose. In addition, a red LED bar for a clearly visible alarm and a buzzer for an acoustic alarm are integrated. On-site operation and alarm acknowledgement is accomplished via five buttons next to the display. Configuration is performed via the USB interface, a laptop or PC and the GMA200Config software. All measurement data of the GMA200-MGSS can be displayed centrally and in a clear manner on a monitor or PC using optional visualisation software.

 

Key features at a glance:

General information:

• Sensor block for up to 3 sensors (1x CC, 2x EC/IR)
• Monitors up to 3 gases at up to 6 measuring points
• Integrated pump (0.5 slpm)

Features:

• Connection of up to 12 external transmitters
• 8 integrated relays for safety concepts, fault messages and maintenance
• Color backlit 2.2″ display
• 15 colored status LEDs
• Visual and audible alarm
• Housing for wall mounting (protection class IP54)

Optionally available:

• Flame arrester, condensate trap, cooling coils, water barrier, gas switching valve
• Data logger (microSD card)
• Relay module for expansion
• Visualization software
• Uninterruptible power supply
• Control unit RC22 for calibration and adjustment of the sensors

Wherever gases are used or may be present in industrial and commercial applications, they must be monitored. A gas detection system consists of one or more transmitters, which use sensors to detect gases, and a controller, which has a wide range of tasks. The GMA200-MT16 controller is ideally suited for use in complex gas detection systems with up to 16 digital or analog transmitters. Safety measures can be connected directly to the GMA200-MT16 via internal relays. The current measured values, alarms and special states of the transmitters can be viewed directly on the controller’s display.

Fixed transmitters monitor combustible or toxic gases and vapors present in the ambient air as well as the oxygen concentration. A controller displays the measured gas concentrations centrally and processes the incoming signals. The GMA200-MT16 is the right choice if

• gases are monitored with up to 16 digital or analog transmitters
• safety measures are to be operated via the controller
• the measured values are to be shown centrally on a display
• an acoustic and visual alarm is required on site
• operating status and alarms are to be indicated by status LEDs

Wide range of applications
The GMA200-MT16 controller and the connected transmitters form a stationary gas detection system for measuring toxic and combustible gases as well as oxygen concentration. Up to 16 digital transmitters can communicate with the controller via the RS-485 interface. Analog transmitters (up to 16) can be connected via 0.2-1 mA or 4-20 mA. The GMA200-MT16 is suitable for any GfG transmitter and any available gas type. This offers a large number of possible combinations of gases, measuring ranges, measuring points and Ex-zones to be monitored simultaneously. The controller is designed for mounting on a DIN rail (TS35), for example in a control cabinet. The supply voltage is 24 V DC.

 

Key features at a glance:

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 16 measuring points

Features:

• 8 integrated relays for safety concepts, fault messages and maintenance
• 0.2-1 mA, 4-20 mA or RS-485 (Modbus)
• Color backlit 2.2″ display
• 15 colored status LEDs
• Audible alarm
• Housing for rail mounting (TS35)

Optional:

• Data logger (microSD card)
• Relay module for expansion (up to 4 modules with 16 relays each)
• Visualization software
• Uninterruptible power supply

Approvals / Certifications:

• ATEX certification: II (2) G
• SIL 2/3

Wherever gases are used or may be present in industrial and commercial applications, they must be monitored. A gas detection system consists of one or more transmitters, which use sensors to detect gases, and a controller, which has a wide range of tasks. The GMA200-MT6 controller is ideally suited for use in complex gas detection systems with up to 16 transmitters (of which up to 6 are analog). Safety measures can be connected directly to the GMA200-MT6 via internal relays. The current measured values, alarms and special states of the transmitters can be viewed directly on the display of the controller.

Fixed transmitters monitor combustible or toxic gases and vapors present in the ambient air as well as the oxygen concentration. A controller displays the measured gas concentrations centrally and processes the incoming signals. The GMA200-MT6 is the right choice if

• gases are monitored with up to 16 transmitters (up to 6 analog)
• safety measures are to be operated via the controller
• the measured values are to be shown centrally on a display
• an acoustic and visual alarm is required on site
• operating status and alarms are to be indicated by status LEDs

Wide range of applications
The GMA200-MT6 controller and the connected transmitters form a stationary gas detection system for measuring toxic and combustible gases as well as oxygen concentration. Up to 16 digital transmitters can communicate with the controller via the RS-485 interface. Analog transmitters (up to 6) can be connected via 0.2-1 mA or 4-20 mA. The GMA200-MT6 is suitable for any GfG transmitter and any available gas type. This offers a large number of possible combinations of gases, measuring ranges, measuring points and Ex-zones to be monitored simultaneously. The controller is designed for mounting on a DIN rail (TS35), for example in a control cabinet. The supply voltage is 24 V DC.

Internal relays and extensions
For the implementation of safety measures, 6 internal relays with one normally open contact each can be programmed individually. Two additional relays are available for fault messages and maintenance. If required by the application, the number of programmable relays can be increased up to 70 (6 internal and 64 external relays). The relay modules are connected via the GMA bus interface. GfG’s GMA200-RT and GMA200-RTD relay modules allow safety measures to be implemented in a decentralized manner, reducing the amount of cabling required.

Clear indicators for assessing the hazard situation
The GMA200-MT6 has a color backlit 2.2-inch display. It shows the current measured values of the connected transmitters at any time. In the event of an alarm, the background color changes from green to red. At the same time, LEDs indicate the alarm level and the relay switching states. A local alarm is triggered by a loud, integrated buzzer (70 dB(A)). Two inputs are available for external alarm acknowledgement push buttons.

Operation, visualization and data storage
The operation of the controller and the alarm acknowledgement on site are done intuitively via 5 push buttons. Configuration is possible via the mini-USB interface using a PC and the GMAConfig software. With the optional GMA200-VS software, all measured values and states of the connected transmitters can also be displayed decentrally on a PC or monitor. Equipped with a microSD card, the controller permanently stores measured values, average values, alarm events and faults at individually configurable intervals for evaluation.

 

Key features at a glance:

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 16 measuring points

Features:

• 8 integrated relays for safety concepts, fault messages and maintenance
• 0.2-1 mA, 4-20 mA or RS-485 (Modbus)
• Color backlit 2.2″ display
• 15 colored status LEDs
• Audible alarm
• Housing for rail mounting (TS35)

Optional:

• Data logger (microSD card)
• Relay module for expansion (up to 4 modules with 16 relays each)
• Visualization software
• Uninterruptible power supply

Approvals / Certifications:

• ATEX certification: II (2) G
• SIL 2/3

Wherever gases are used or may be present in industrial and commercial applications, they must be monitored. A gas detection system consists of one or more transmitters, which use sensors to detect gases, and a controller, which has a wide range of tasks. The GMA200-MW16 controller is ideally suited for complex gas detection systems with up to 16 digital or analog transmitters. Safety measures can be connected directly to the GMA200-MW16 via internal relays. The current measured values, alarms and special states of the transmitters can be viewed directly on the display of the controller.

Fixed transmitters monitor combustible or toxic gases and vapors present in the ambient air as well as the oxygen concentration. A controller centrally displays the measured gas concentrations and processes the incoming signals. The GMA200-MW16 is the right choice if

• gases are monitored with up to 16 digital or analog transmitters
• safety measures are to be operated via the controller
• the measured values are to be shown centrally on a display
• an acoustic and visual alarm is required on site
• operating status and alarms have to be indicated by status LEDs

Versatile application possibilities
The GMA200-MW16 controller and the connected transmitters form a fixed gas detection system for measuring toxic and flammable gases as well as oxygen concentration. Up to 16 digital transmitters can communicate with the controller via the RS-485 interface. Analog transmitters (up to 16) can be connected via 0.2-1 mA or 4-20 mA. The GMA200-MW16 is suitable for any GfG transmitter and any available gas type. This offers a large number of possible combinations of gases, measuring ranges, measuring points and Ex zones to be monitored simultaneously.  The robust housing (IP65) for wall mounting can be installed in almost any location. The supply voltage is 100-230 V AC or 24 V DC.

Internal relays and extensions
For the implementation of safety measures, 6 internal relays with one normally open contact each can be programmed individually. Two additional relays are available for fault messages and maintenance. If required by the application, the number of programmable relays can be increased up to 70 (6 internal and 64 external relays). The relay modules are connected via the GMA bus interface. GfG’s GMA200-RT and GMA200-RTD relay modules allow safety measures to be implemented in a decentralized manner, reducing the amount of cabling required.

Clear indicators for assessing the hazard situation
The GMA200-MW16 has a color backlit 2.2-inch display. The current measured values of the connected transmitters can be viewed on it at any time. In the event of an alarm, the background color changes from green to red. At the same time, LEDs indicate the alarm level and the relay switching states. A local alarm is triggered by an easily visible alarm light and a loud, integrated horn (100 dB(A)). Two inputs are available for external alarm acknowledgement push buttons.

Operation, visualization and data storage
The operation of the controller and the alarm acknowledgement on site are done intuitively via 5 pushbuttons. Configuration is possible via the mini-USB interface using a PC and the GMAConfig software. With the optional GMA200-VS software, all measured values and states of the connected transmitters can also be displayed decentrally on a PC or monitor. Equipped with a microSD card, the controller permanently stores measured values, average values, alarm events and faults at individually configurable intervals for evaluation.

 

Key features at a glance:

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 16 measuring points

Features:

• 8 integrated relays for safety concepts, fault messages and maintenance
• 0.2-1 mA, 4-20 mA or RS-485 (Modbus)
• Color backlit 2.2″ display
• 15 colored status LEDs
• Visual and audible alarm
• Housing for wall mounting (IP65)

Optional:

• Data logger (microSD card)
• Relay module for expansion (up to 4 modules with 16 relays each)
• Visualization software
• Uninterruptible power supply

Approvals / Certifications:

• ATEX certification: II (2) G
• SIL 2/3

Wherever gases are used or may be present in industrial and commercial applications, they must be monitored. A gas detection system consists of one or more transmitters, which use sensors to detect gases, and a controller, which has a wide range of tasks. The GMA200-MW4 controller is ideally suited in complex gas detection systems with up to 16 transmitters (of which up to 4 are analog). Safety measures can be connected directly to the GMA200-MW4 via internal relays. The current measured values, alarms and special states of the transmitters can be viewed directly on the display of the controller.

Fixed transmitters monitor combustible or toxic gases and vapors present in the ambient air as well as the oxygen concentration. A controller centrally displays the measured gas concentrations and processes the incoming signals. The GMA200-MW4 is the right choice if

• gases are monitored with up to 16 transmitters (up to 4 analog)
• safety measures are to be operated via the controller
• the measured values are to be shown centrally on a display
• an acoustic and visual alarm is required on site
• operating status and alarms have to be indicated by status LEDs

Versatile application possibilities
The GMA200-MW4 controller and the connected transmitters form a fixed gas detection system for measuring toxic and flammable gases as well as oxygen concentration. Up to 16 digital transmitters can communicate with the controller via the RS-485 interface. Analog transmitters (up to 4) can be connected via 0.2-1 mA or 4-20 mA. The GMA200-MW4 is suitable for any GfG transmitter and any available gas type. This offers a large number of possible combinations of gases, measuring ranges, measuring points and Ex zones to be monitored simultaneously. The robust housing (IP65) for wall mounting can be installed in almost any location. The supply voltage is 100-230 V AC or 24 V DC.

Internal relays and extensions
For the implementation of safety measures, 4 internal relays with one normally open contact each can be programmed individually. Two additional relays are available for fault messages and maintenance. If required by the application, the number of programmable relays can be increased up to 68 (4 internal and 64 external relays). The relay modules are connected via the GMA bus interface. GfG’s GMA200-RT and GMA200-RTD relay modules allow safety measures to be implemented in a decentralized manner, reducing the amount of cabling required.

Clear indicators for assessing the hazard situation
The GMA200-MW4 has a color backlit 2.2-inch display. The current measured values of the connected transmitters can be viewed on it at any time. In the event of an alarm, the background color changes from green to red. At the same time, LEDs indicate the alarm level and the relay switching states. A local alarm is triggered by 7 easily visible, bright alarm LEDs and a loud, integrated buzzer (100 dB(A)). Two inputs are available for external alarm acknowledgement push buttons.

Operation, visualisation and data storage
The operation of the controller and the alarm acknowledgement on site are done intuitively via 5 push buttons. Configuration is possible via the mini-USB interface using a PC and the GMAConfig software. With the optional GMA200-VS software, all measured values and states of the connected transmitters can also be displayed decentrally on a PC or monitor. Equipped with a microSD card, the controller permanently stores measured values, average values, alarm events and faults at individually configurable intervals for evaluation.

 

Key features at a glance:

General information:

• Suitable for every GfG transmitter
• Monitors 1 to 16 measuring points

Features:

• 6 integrated relays for safety concepts, fault messages and maintenance
• 0.2-1 mA, 4-20 mA or RS-485 (Modbus)
• Color backlit 2.2″ display
• 13 colored status LEDs
• Visual and audible alarm
• Housing for wall mounting (IP65)

Optional:

• Data logger (microSD card)
• Relay module for expansion (up to 4 modules with 16 relays each)
• Visualization software
• Uninterruptible power supply

Approvals / Certifications:

• ATEX certification: II (2) G
• SIL 2/3