What is a sampling system?
A sampling detector draws air samples from the monitored space through a suction tubing system to the central unit, where the air samples are analyzed. Unlike traditional point-type detectors, the sampling detector continuously draws in air through holes in the sampling tubing, and the tubing transports the samples to the central unit for analysis.
The system can be fully integrated with modern fire alarm systems, enabling seamless coordination with other safety systems. This integration ensures that fire alarms are immediately relayed to the correct locations and that evacuation procedures can be initiated without delay.
The technical design is based on actively drawing air from the monitored space, which makes the system significantly more sensitive than passive detectors. As the air flows through the sampling tubing, it quickly reaches the sensor inside the sampling center, regardless of where in the monitored space smoke begins to form.
Challenging Conditions and the Strengths of the Sampling System
Industrial environments place demands on fire safety systems that conventional solutions cannot meet. The sampling system has been designed specifically to address these challenges.
Large temperature fluctuations are common in many production facilities. Heat treatment plants, freezing facilities, and the process industry can experience conditions that vary by tens of degrees throughout the day. Conventional detectors struggle in such conditions, as their sensitivity changes with temperature. A sampling system, on the other hand, maintains its functionality regardless of temperature fluctuations.
Dust and dirt pose another significant challenge. In the wood processing industry, at building materials factories, and in warehouses, airborne dust can clog traditional detectors or cause false alarms.
The sampling system analyzes air samples at the sampling center, which allows for more efficient separation of dust and dirt from the actual combustion gases.
High humidity is a problem, particularly in the food industry, laundries, and swimming pools. Moisture can condense on the surfaces of conventional detectors and impair their operation, causing false alarms. The sampling system operates reliably even in humid conditions because the air samples are processed in a protected environment.
Corrosive gases are found in the chemical industry, battery storage facilities, and certain process areas. These gases can damage the electronics and sensors of conventional detectors. The centralized design of the sampling system provides better protection for critical components against these effects.
Integration with the EBL512 G3 System
The full integration of the sampling system into the EBL512 G3 fire alarm control panel provides significant benefits for a building’s fire safety. Depending on the site’s design, the sampling system is connected either directly to an addressable loop or, if necessary, via I/O units.
Integration means that the sampling system is not a separate system but a fully integrated part of the fire alarm system. When the sampling system detects smoke particles, the information is immediately transmitted to the EBL512 G3 control panel, which processes it in the same way as an alarm from any other detector. This integration simplifies the operation and maintenance of the system.
When the sampling system is integrated into a broader fire alarm system, all components are programmed to work seamlessly together. This ensures that fire alarms are transmitted correctly and that evacuation systems are activated as intended.
System maintenance is simplified when all monitoring is handled through a single control center. The EBL512 G3 displays the sampling status in the same user interface as the other detectors, making it easy to monitor the overall condition of the system.
Suitable Applications and Use Cases
The sampling system is ideal for locations where fire safety is critical but conditions are challenging. The high ceilings and large spaces in industrial buildings require a fire alarm system with exceptional sensitivity. Sampling detects smoke formation at an early stage, even if the smoke rises high before reaching the detectors on the ceiling.
Warehouses and logistics centers benefit from a sampling system, especially when they store valuable goods or hazardous materials. Early fire detection or advance warning provides time to respond before a fire spreads further throughout the building.
In the process industry, where chemicals or other sensitive materials are handled, the sampling system’s ability to operate in corrosive conditions is invaluable. The system can monitor production lines, storage areas, and processing areas where conventional detectors would not last long.
Food industry facilities, such as freezers, cold storage warehouses, and production facilities, face challenges related to both temperature and humidity. The sampling system offers a reliable solution for these conditions. At the same time, it meets the industry’s strict hygiene requirements, as the system does not collect dirt in the same way as traditional detectors.
Battery storage facilities and electrical equipment rooms are particularly critical locations. If batteries are damaged, corrosive gases can be released even before an actual fire breaks out. The sampling system detects these early signs, allowing for preventive measures to be taken before the situation worsens.
Installation and Commissioning
Installing a sampling system requires careful planning and professional execution. The system’s functionality depends on the sampling piping being properly sized and positioned within the monitored space.
The electrical contractor is responsible for the physical installation work. This includes the installation of sampling piping, cabling, and component connections. The piping is positioned so that it covers the entire area to be monitored in accordance with design guidelines and standards. The location and number of sampling intake points are determined based on the size and height of the space, air circulation, and the protected areas.
PAP Group handles system design or the review of designs, programming, implementation, and testing. The programming defines how the sampling system responds to various situations and how alarms are forwarded.
The system is tested during the commissioning phase to ensure that air sampling functions properly in all sections of the piping and that the sampling center reliably detects smoke. At the same time, the integration with other systems is checked, tested, and documented, and it is verified that alarms are transmitted correctly.
User training is provided as needed. Building staff must understand how the sampling system works as part of the broader fire safety system. The training covers the system’s operating principles, the user interface, and how to respond in various situations.
Maintenance and Service
Maintenance is an essential part of ensuring the reliable operation of the sampling system. PAP Group provides maintenance for the system as part of its fire alarm system maintenance services.
During scheduled maintenance, the condition of the system is thoroughly inspected. The sampling lines are cleaned, and the filters are replaced as needed. The operation of the central unit is tested, and its settings are adjusted as needed to match the prevailing conditions.
The operation of the sampling piping system is checked regularly. The sampling system must draw air at a sufficient rate from all sampling ports. If the flow rate decreases, it may indicate a leak in the piping or a blockage in the intake ports, which must be repaired immediately.
During maintenance, we ensure that the sampling system communicates properly with the fire alarm control panel and that all alarms are transmitted as intended. Maintenance is documented in accordance with standard practice. Read more about documenting maintenance in the article "Fire Alarm Log."
Legislation and Guidelines
Technical solutions alone are not enough; a fire safety system must also comply with regulatory requirements and standards. According to the Rescue Act 379/2011, the owner and occupant of a building must ensure that the building is safe and that a fire can be detected in a timely manner. A sampling system helps meet these requirements, particularly in challenging locations.
The Ministry of the Environment’s Decree on Fire Safety in Buildings specifies the requirements for different types of buildings. The need for and scope of fire safety systems are determined based on the building’s intended use, the risks involved, and the building permit process. A solution such as a sampling system may be the only way to meet these requirements in buildings where conventional detectors do not function reliably.
The ST1 guideline defines the principles for the design and installation of fire detectors to ensure safe and reliable operation. It covers, among other things, detector placement, system sizing, cabling, fault tolerance, as well as commissioning and documentation. The guideline emphasizes compliance with standards and regulatory requirements, as well as the importance of maintenance and testing.
EN 54 is a series of European standards that specifies the requirements for fire alarm systems. It covers, among other things, fire detectors, alarm devices, control panels, power supplies, and system testing. The standard ensures compatibility, reliability, and performance of equipment across different manufacturers. EN 54 also governs product certification and CE marking. The goal is to ensure early detection of fire hazards and safe alarm notification throughout Europe.
PAP Group's Expertise
PAP Group specializes in the implementation of sophisticated fire safety systems. The installation and maintenance of specialized systems, such as sampling systems, require in-depth technical expertise and experience with challenging sites.
Trained installers ensure that the sampling system integrates seamlessly with the EBL512 G3 system. Programming is carried out carefully, taking into account the specific characteristics of the site and the customer’s needs. During the commissioning phase, the system is thoroughly tested to ensure its reliable operation.
Maintenance services cover the entire system lifecycle. Scheduled maintenance is performed professionally and carefully documented. If any malfunctions occur in the system, PAP Group’s experts will identify the cause and resolve the issue quickly.
Each customer’s needs are unique, and PAP Group tailors its solutions to the specific requirements of each site. The sampling system can be integrated with other safety systems, such as safety and evacuation announcement systems, to create a comprehensive safety solution.
Frequently Asked Questions
How does a sampling system differ from a conventional fire alarm?
The sampling system actively draws air from the monitored space through a network of intake pipes and analyzes it at the sampling center. Conventional detectors, on the other hand, detect smoke or heat locally. The advantage of the sampling system is its significantly higher sensitivity and its ability to operate in conditions where conventional detectors do not function reliably. The system is particularly effective in large spaces and locations where there are significant temperature fluctuations, dust, dirt, moisture, fumes, or corrosive gases.
Can sampling replace all other detectors in a building?
The sampling system is a specialized system designed for specific conditions; it is not a universal solution for the entire building. It integrates into a broader fire alarm system and complements other detectors. Typically, a sampling system is installed in areas where conditions are most challenging, while conventional smoke and heat detectors are used elsewhere in the building. The EBL512 G3 fire alarm control panel manages all detector types uniformly.
How often does the sampling system require maintenance?
Scheduled maintenance is performed according to the manufacturer’s instructions and the conditions at the site, typically once or twice a year. In challenging conditions, such as extremely dusty environments, maintenance may be required more frequently. During maintenance, the condition of the sampling piping is checked, cleaned if necessary, and the system’s operation is tested. The condition of the filters is also checked during maintenance, and they are replaced if necessary.
Does the sampling system generate a lot of false alarms?
On the contrary, sampling reduces false alarms compared to conventional detectors in challenging conditions. The centralized analysis of air samples in the sampling system allows for more accurate differentiation between actual combustion gases and other factors, such as dust, dirt, moisture, or steam. A properly installed and maintained sampling center is extremely reliable. If false alarms occur, they are usually due to incorrect system programming or neglect of maintenance, not the technology itself.
How does the sampling system work during a power outage?
The sampling system integrates with the EBL512 G3 fire alarm control panel, which is equipped with a backup power system and a battery to ensure communication. In the event of a power outage, the sampling center has its own backup battery, which continues to operate on battery power for the duration specified in the life cycle manual and instructions. The capacity of the backup power system is sized according to the site’s needs to ensure sufficient operating time. The system automatically alerts users if the power supply is interrupted and the backup battery is activated. This ensures that fire safety is maintained even in emergency situations.
Is the sampling system compatible with the existing fire alarm system?
The sampling system is designed to integrate fully with fire alarm control panels from a variety of manufacturers. If a building already has an existing fire alarm system, adding the sampling control panel is relatively simple. PAP Group will assess the existing system and recommend the best solution. In some cases, it may make more sense to upgrade the entire system to a modern setup rather than attempting to integrate the sampling system into the old system.