Dalemans : complete EN 50545-1 compliant solutions for gas detection in underground car parks
Dalemans presents its professional gas detection solutions for underground car parks : S•Vx systems, D•CAN detectors, and V•Touch supervision. Guaranteed safety, energy efficiency, and full EN 50545-1 compliance.
Dalemans : ensuring air quality in underground car parks
Belgian expertise serving professionals
Concentrations of carbon monoxide (CO) and nitrogen dioxide (NO₂) in underground car parks represent a major health and safety risk.
Dalemans, a Belgian company specialising in gas detection for more than 45 years, supports professionals in achieving compliance and securing their installations. Its systems are now deployed in numerous public and industrial car parks across Europe.
An all-in-one solution : the S•Line range
S•Vx : the control panel dedicated to car parks
The S•Vx system, compliant with EN 50545-1, has been designed to meet the specific requirements of underground car parks :
- Detection of CO and NO₂ gases at breathing height (1.5 m above floor level),
- Configurable alarm thresholds : 50 / 90 / 120 ppm for CO, 0.2 / 0.5 ppm for NO₂,
- Automatic control of ventilation units according to air quality,
- Risk signalling via illuminated panels, sirens and flash beacons,
- ModBus TCP communication and remote visualisation via V•Touch.
Objective : maximise safety while reducing the energy consumption of ventilation systems through intelligent regulation.
Key features of the S•Vx system
- Up to 256 inputs and 18 outputs per control panel,
- Integrated touchscreen for supervision and event history,
- Local and remote data backup,
- Backup batteries (2 × 7 Ah) ensuring continuity in case of power failure,
- Simplified maintenance and flexible networking (ModbusTCP).
The new-generation D•CAN detector
The new D•CAN range introduces major innovations :
- Plug & Play sensing cell for fast replacement,
- Time savings thanks to “one-man maintenance” : an efficient calibration procedure allowing a complete calibration round without returning to the control panel,
- Clear status indication and integrated preventive maintenance.
These detectors provide a reliable and continuous measurement of air quality while reducing operating costs.
V•Touch : supervision at your fingertips
The S•Touch platform enables real-time visualisation of all data from the various gas detection control panels :
- Clear graphical interface,
- Alarm and event history,
- Floor-plan view of the car park,
- Remote monitoring via a local server.
Ideal for car park operators seeking full control, even off-site.
Case study : stages of a CO and NO₂ detection project in an underground car park
1️⃣ Specification analysis
- 4 levels, 1 ventilation unit per level,
- 22 measurement points : 22 CO cells and 22 NO₂ cells,
- Ventilation / signalling / fire system control signals : 16 contacts total,
- Local server connection + remote backup.
2️⃣ Design and layout
- 1 detection point every 400 m²,
- 1 zone per level,
- Additional relay and BUS cards for modularity,
- Central cabinet integrating batteries and touchscreen.
3️⃣ Installation and commissioning
- Dalemans handles : assembly, wiring, configuration and commissioning,
- Client : cable routing and server data provision for ModBus communication,
- Standard lead time : 2 weeks after production launch,
- Intervention report provided upon handover.
4️⃣ Maintenance and follow-up
- Annual maintenance contract at a competitive rate,
- Automated planning by Dalemans,
- Guaranteed proper system operation with intervention report.
“Preventive maintenance and V•Touch visualisation ensure optimal system availability and maximum responsiveness in case of an alert.”
Why choose Dalemans ?
- Compliance : with the EN 50545-1 standard
- Expertise : over 40 years of experience in gas detection
- Full support : study, design, installation, maintenance
- Innovation : connected control panels, smart detectors, and S•Touch supervision
- Energy optimisation : reduced ventilation operating time
- European presence : operations in Belgium and throughout the EU
Underground Car Park Gas Detection FAQ
To prevent CO and NO₂ poisoning, automatically control ventilation, and alert users when critical thresholds are exceeded.
The EN 50545-1 standard defines the requirements for gas detection systems in car parks and tunnels.
Mainly carbon monoxide (CO) from petrol vehicles and nitrogen dioxide (NO₂) from diesel engines.
Dalemans systems automatically regulate ventilation based on the actual gas concentration, preventing continuous operation.
Conclusion
Dalemans confirms its position as a leading European reference in gas detection for underground car parks. Thanks to the S•Line range (S•Vx control panel, D•CAN detectors, V•Touch supervision), the company offers car park operators a complete solution, connected and energy-efficient, ensuring safety, compliance and peace of mind.