What is the maximum allowed air sample transport time for smoke detectors from the farthest sampling point?

The maximum allowed air sample transport time for smoke detectors from the farthest sampling point is 120 seconds. This timeframe is established to ensure that the smoke detection system is responsive and reliable. A longer transport time could result in a delay in detecting smoke, which is critical in emergency situations. Hence, adhering to this 120-second guideline helps maintain the effectiveness of the smoke detection system, ensuring that any potential hazards are identified in a timely manner. This standard reflects considerations of safety protocols and operational efficiency necessary for effective fire prevention and response strategies.