12/06/2025
Fire Alarm vs. Car Park CO Sensor:
• Sensitivity: Fire alarm sensors must detect small traces of CO from smoldering fires, while parking garage sensors allow higher thresholds before triggering ventilation.
• Response Time: Fire alarm sensors react rapidly to sudden CO increases. Car park sensors operate over time, ensuring air quality doesn't reach hazardous levels.
• Integration: Car park sensors work with ventilation systems, automatically activating fans when CO builds up. Fire alarm sensors trigger evacuation alerts.
• Environmental Durability: Parking sensors handle harsh conditions like vehicle exhaust and humidity changes, while fire alarm sensors are tuned for indoor stability.
Types of CO Sensors
1. Electrochemical Sensors – The most common type, using chemical reactions to generate an electrical signal based on CO concentration. These are highly accurate and used in both fire alarms and car parks.
2. Semiconductor Sensors – These use metal oxide semiconductors to detect CO levels, but they can be sensitive to temperature and humidity variations.
3. Infrared (NDIR) Sensors – Uses infrared absorption techniques for CO detection, often found in industrial applications where precision is critical.
Types of CO Sensors
1. Electrochemical Sensors – The most common type, using chemical reactions to generate an electrical signal based on CO concentration. These are highly accurate and used in both fire alarms and car parks.
2. Semiconductor Sensors – These use metal oxide semiconductors to detect CO levels, but they can be sensitive to temperature and humidity variations.
3. Infrared (NDIR) Sensors – Uses infrared absorption techniques for CO detection, often found in industrial applications where precision is critical.
