Clean room self-cleaning time detection

1. What is self-purification time? Self-cleaning time, in English, cleanliness vecoverly characteristic, refers to the time when the cleanliness air conditioning system starts to operate to return to a stable and regulated indoor cleanliness level after the clean room is polluted. 2. How is the clean room's self-purification time tested? Clean room self-purification time 1. The clean room self-cleaning time detection is suitable for non-unidirectional flow clean rooms. 2. The clean room self-cleaning time detection should use artificial dust sources such as atmospheric dust or smoke generators as the benchmark, and should be detected by a particle counter, and the following requirements should be met: (1) When taking atmospheric dust as the reference, the side must stop the clean room for a considerable period of time. When the indoor dust concentration is close to the atmospheric concentration, measure the dust concentration in the clean room near the return air outlet, then turn on the machine, and read it regularly. (Generally, it can be set to read once every 6S), until the dust concentration at the return air outlet returns to the original stable state, record the required time (t). (2) When the artificial dust source is used as the reference, the smoke generator should be placed in the center of the room above 1.8m from the ground, and the smoke should be stopped after 1 to 2 minutes, and then wait 1 minute to measure the dust concentration in the clean room near the return air outlet ( N0). Then boot, the method is the same as above. 3. From the initial concentration (N0), the indoor stable concentration (N), and the actual number of air exchanges(n), the calculated self-cleaning time (t0) can be obtained, which is compared with the actual self-cleaning time (t), if t≤1.2t0 , Is qualified. 4. Self-cleaning time method In addition to the above methods, there are also particle concentration change rate evaluation methods. The self-cleaning time detection method should be negotiated and determined. Welcome to inquiry sliding doors for clean room、cleanroom wall partitions、clean rooms false ceiling and cleanroom ceiling grid system etc.