What is the maximum air sample transport time from the farthest sampling port to the detector for fire alarm systems?

In fire alarm systems, the maximum air sample transport time from the farthest sampling port to the detector is critical for ensuring that smoke or fire hazards are detected promptly. The accepted maximum transport time is 120 seconds. This duration is established to allow for an effective response to potential fires without unnecessary delay.

If the sample transport time exceeds this limit, there is a risk that smoke may not reach the detector in time to activate the fire alarm, which could have serious safety implications. Therefore, maintaining this maximum air sample transport time ensures the reliability and effectiveness of the fire detection system, providing adequate protection for the building and its occupants.

Understanding this time frame is essential for anyone involved in the installation, maintenance, or inspection of fire alarm systems, as it reflects the standards set forth by relevant codes and best practices in the industry.