How important are response time and recovery time for a gas detector?

Response time (T90) is the time required for the instrument to display 90% of the final concentration value after exposure to the gas, while recovery time is the time it takes to return to the baseline level after removal from the gas environment. These parameters directly impact the timeliness of safety warnings. For example, in a leak incident, a fast response (e.g., T90 ≤ 20 seconds) can buy critical time for personnel evacuation. A short recovery time means the instrument is ready for the next detection sooner, improving monitoring efficiency.