Gas Alarm GX-HS

Gas Alarm GX-HS: Professional DIN Rail Gas Monitoring for Maximum Safety

At the heart of modern building technology beats the pulse of safety – and that’s exactly where the Gas Alarm GX-HS from Elektrotechnik Schabus GmbH & Co. KG finds its perfect place.

This high-precision monitoring system for standard DIN rail installation is specially designed for use in control cabinets, distribution boxes, and technical equipment.

It detects dangerous gas concentrations well below life-threatening levels and covers a wide range of gases, from volatile hydrocarbons such as methane and propane to carbon monoxide, CO₂, and fluorinated refrigerants.

Each gas type requires a precisely matched sensor, calibrated to the physical properties of the gas – whether it rises, sinks, or disperses evenly. The GX-HS is therefore not just a detector but an intelligent control unit that actively intervenes in an emergency: it switches potential-free relays, interrupts gas lines via solenoid valves, and communicates with building management systems. In an era where downtimes are costly and risks unacceptable, the GX-HS stands for uncompromising prevention – made in Germany, certified, and proven millions of times in practice.

The GX-HS technology is designed for maximum sensitivity and reliability. As soon as a critical threshold is reached – long before danger arises for people or equipment – the system triggers immediately.

An integrated LED display indicates the status visually, while an optionally connected external buzzer or piezo alarm generator provides a penetrating acoustic alert. Two potential-free changeover relays take control: one closes the gas supply via a magnetic shut-off valve, the other reports the event to the central building management system or a BUS network such as EIB/KNX. Thus, the system not only warns but acts – gas leaks are stopped before they can escalate. The GX-HS operates with either 230 V AC or 12–24 V DC, offering flexible use in new buildings, renovations, or industrial settings. Installation is carried out exclusively by qualified professionals in accordance with the five safety rules to prevent malfunctions.

Each sensor is positioned exactly as specified by the manufacturer – near the floor for heavy gases or under the ceiling for lighter ones – and cable extensions are strictly dimensioned according to specifications. This creates a seamless safety network that functions even under the most demanding conditions.

The GX-HS is more than just a component – it is the backbone of professional gas monitoring in technical installations. Whether in heating control, air conditioning, or process monitoring: this DIN rail device integrates seamlessly into existing systems and meets the highest standards of functionality and compliance.

Maintenance is sensor-based and clearly structured, minimizing downtime. A fault relay reports not only gas but also technical issues – such as cable breakages or sensor aging. With its compact 35 mm DIN rail design, the GX-HS fits into any distribution box without wasting valuable space. Elektrotechnik Schabus has created a system that not only reacts but protects proactively.

It is the invisible bodyguard for your installation – vigilant, precise, and uncompromising around the clock. Combined with matching sensors, a simple detector becomes an intelligent safety management system that protects lives, preserves property, and reduces operating costs. Those who prioritize safety choose the GX-HS – the smart solution for professionals.

Discover the technical highlights of the GX-HS at a glance – precise, practical, and ready to use:

• Early detection: Alerts even at minimal gas concentrations – well below critical levels.
• Flexible sensor technology: Compatible with sensors for LNG, methane, butane, propane, CO, CO₂, refrigerants (CFC/HFC), hydrogen, and more.
• Dual relay control: One relay for magnetic shut-off valve (close gas line), one for building management or fault reporting.
• Visual & acoustic: Integrated LED indicator + connection for external buzzer/piezo alarm generator.
• DIN rail design: Compact 35 mm DIN rail, ideal for control cabinets and distribution boxes.
• Power supply: 230 V AC or 12–24 V DC – flexible for any installation.
• BUS-compatible: Direct connection to EIB/KNX or other building automation systems.
• Safe installation: In dry indoor areas only, by qualified professionals, with gas-appropriate mounting height.
• Maintenance: Interval depends on sensor – clear instructions in the user manual.

Application areas: Where the GX-HS is indispensable

The GX-HS ensures operational safety in numerous industries and scenarios. Here are some typical applications:

• Gas heating systems & boilers: Monitors natural gas, city gas, or LPG (LNG) in heating centers. Shuts off gas supply in case of leak.
• Air conditioning & refrigeration: Detects refrigerant leaks (R32, R410a, R404a) in cold storage, heat pumps, or air conditioners.
• Catering & breweries: Controls CO₂ levels in dispensing systems, sparkling water units, or dry ice storage – prevents overpressure and health hazards.
• Industry & workshops: Detects hydrogen (H₂), carbon monoxide, or flammable gases in production areas and warehouses.
• Offices & public spaces: Measures CO₂ concentration in open-plan offices, classrooms, or waiting rooms – for better air quality and fewer headaches.
• Camping & mobile use: Protects against propane/butane leaks in motorhomes or boats (with 12 V DC version).
• Building services & smart home: Integrates into BUS systems, controls ventilation, sends app alerts, or switches off automatically.

With the GX-HS, you invest in a system that not only meets but exceeds standards. It is the first choice for electrical professionals, facility managers, and operators of critical infrastructure.

Its clear documentation, precise sensor technology, and robust construction make the GX-HS the benchmark in DIN rail gas monitoring. Whether for new installations or retrofits – the GX-HS fits. It is easy to configure, reliable in operation, and built to last. And when it matters, it saves lives – silently, precisely, and without compromise.

Don’t wait until it’s too late. Integrate the GX-HS into your system and benefit from a safety level that leaves nothing to be desired.

Combine it with matching sensors from Schabus – such as GX-LNG, GX-CO2-25, or GX-CFC – and create a tailor-made protection system. The investment pays off through avoided damage, lower insurance costs, and higher operational safety. The GX-HS is more than technology – it is responsibility in its purest form. Order now and secure your installation professionally.

Scope of delivery:

• GX-HS warning device
• User manual

Safety instructions

• Before mounting or commissioning the device, carefully read the user manual.
• Installation must be carried out by a qualified professional.
• Packaging material is not a toy. Keep it away from children.
• The warning device and sensor may only be installed in dry indoor areas and must be positioned according to gas type to ensure proper operation.
  
• When extending cables, strictly follow the sensor’s operating instructions.
  
• Always observe the specified mounting height and method! Please read the user manual of the sensor you plan to use and follow the prescribed installation instructions!
  

Gases, applications, and matching sensors

Different applications require specific gas sensors, each calibrated for a certain gas type. The overview below shows common gases, their typical applications, and suitable sensor solutions.

City & natural gas, methane, butane, propane, LNG, camping gas

These flammable gases are commonly used in gas boilers and cookers. They are highly flammable and can form explosive mixtures with air even at low concentrations. The GX-LNG sensor (Article number: 300897) is specifically designed for detecting natural and liquefied gases, ensuring reliable monitoring.

Chlorofluorocarbons (refrigerants)

Chlorofluorocarbons – also known as refrigerants – are used in air conditioners, cold storage facilities, and heat pumps. A leak of these substances can not only impair system performance but also harm the environment. The GX-CFC sensor (Article number: 200901) is optimized for early detection of refrigerant leaks.

Hydrogen (H₂)

Hydrogen is increasingly used in air-conditioning and heat pump systems, as well as in energy and industrial sectors. The gas is colorless, odorless, very light, and highly flammable. The GX-H2 sensor (Article number: 200616) is developed for this use case, providing extreme sensitivity even to the smallest concentrations for maximum safety.

Carbon dioxide (CO₂) – technical applications

Carbon dioxide is present in dispensing systems, breweries, sparkling water units, cold rooms, dry ice storage, and other technical applications. At high concentrations, CO₂ can displace oxygen and cause asphyxiation. The GX-CO2-30 sensor (Article number: 300315) reliably monitors these environments and alerts early to dangerous CO₂ increases.

Carbon dioxide (CO₂) – indoor air

In indoor environments such as workshops, open-plan offices, waiting rooms, event spaces, classrooms, and gyms, good air quality is essential. Excessive CO₂ leads quickly to fatigue, loss of concentration, and discomfort. The GX-CO2-25 sensor (Article number: 200989) precisely measures CO₂ levels in room air and actively promotes a healthy indoor climate.