How to carry out purification air conditioning system measurement in clean room? -common problem
How to carry out the determination of the purification air conditioning system in the clean clean room modular?
Before the operation of the purification air-conditioning system, temporary filters should be installed at the suction ports of the return air and fresh air and in front of the primary and medium-efficiency filters to protect the system. The inspection and adjustment of the purification air-conditioning system should be carried out in the system. Fully cleaned, and has been running for 24h and above for...
Text label: clean room measurement, purification air conditioning system, clean room purification system
How to carry out the determination of the purification air conditioning system in the clean room?
Before the operation of the purification air-conditioning system, temporary filters should be installed at the suction ports of the return air and fresh air and in front of the primary and medium-efficiency filters to protect the system. The inspection and adjustment of the purification air-conditioning system should be carried out in the system. Complete cleaning, and it has been operated for 24 hours or more to reach stability; the one-way flow clean clean room modular generally adopts the method of the average wind speed of the room section and the product of the cross-sectional area to determine the air supply volume, 0.3m away from the high-efficiency filter, and the section perpendicular to the airflow is used as sampling For the test section, the distance between the measuring points on the section should not be greater than 0.6m, and the number of measuring points should not be less than 5; when the clean room has a long straight pipe section on the windward side of the tuyere and has or can be drilled, the air volume can be determined by the air duct method. The measurement section should be located at a position greater than or equal to 3 times the pipe diameter or long side length before the local resistance component, and 5 times the pipe diameter or long side length after the local resistance component. The tuyere method is to connect the auxiliary air duct according to the shape of the tuyere at the tuyere where the high-efficiency filter is installed. On the outlet plane of the auxiliary air duct, the minimum number of measurement points is not less than 6 points and evenly arranged, using an anemometer or an air volume hood to measure The wind speed of each measuring point, and then multiply the average wind speed of the tuyere section by the net sectional area of u200bu200bthe tuyere to obtain the measured air volume.
The cleanliness level of indoor air must meet the level specified in the design or the level requirements under the agreed acceptance state. For a one-way flow clean room higher than or equal to level five, when the door is open, measure the distance from the door to the indoor side of 0.6m The dust concentration of the air at the working height should not exceed the upper limit of the indoor cleanliness level; the sampling points should be evenly distributed in the entire area and located at the height of the working area; the minimum sampling time for each sampling point is 1min, and the sampling The volume should be at least 2L; the minimum number of sampling times in each clean room is 3 times; the airflow velocity at the sampling port during sampling should be as close to the indoor design airflow velocity as possible. For one-way flow clean rooms, the sampling nozzle of the particle counter should Facing the direction of airflow; for non-unidirectional flow clean rooms, the mouth of the sampling pipe should be upward, the sampling pipe should be clean, and there should be no leakage at the connection. The length of the sampling pipe should be determined according to the allowable length. Indoor measurement personnel must wear clean work clothes, and should not exceed three, and stay far away from or on the leeward side of the sampling point. It should include: the name and address of the testing institution; the date of the test and the signature of the tester; the address of the clean room or clean area to be tested, the specific number and coordinate map of the sampling point; the air cleanliness level of the clean room or clean area to be tested, The measured particle size, the state of the tested clean clean room modular, the airflow and the static pressure difference; the test results include indicating the measured particle concentration on the coordinate chart of all sampling points; the abnormal test values u200bu200bare explained and data processed. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for clean rooms and purification plants.
The detection of planktonic bacteria and sedimentary bacteria in clean rooms mainly includes microbial detection method and suspended microorganism method; the suspended microorganism method adopts centrifugal, pinhole and slit type impingement samplers, and the sampling time should be determined according to the concentration of air microorganisms , the number of sampling points can be the same as the number of air cleanliness measurements, various samplers should be used according to the methods specified in the instrument manual; the sedimentation bacteria microorganism method should use a 90mm diameter petri dish, and settle on the sampling point for 30min before sampling. There are two types of microorganism detection methods: air suspension microorganism method and sedimentation microorganism method. After sampling, the substrates are counted after being cultivated in an incubator at 37°C and 48H to generate colonies. The sampling vessels and culture solution used must be sterilized. Sampling points can be arranged uniformly or alternatively.
Competitiveness policy of SUZHOU PHARMA MACHINERY CO.,LTD. is about existing clusters as a platform for upgrading microeconomic fundamentals, where structural policies aim to change the industrial composition of an economy more directly.
See reviews of the latest trend in CUSTOM SOLUTION SERVICES industry at PHARMA MACHINERY, and see the best that work in just minutes! Visit us right away!
If you are looking for best product, then here are some product like CUSTOM SOLUTION SERVICES, extraction machine and extraction machine in various styles which will surely meet your demand. Visit PHARMA MACHINERY to know more!
CUSTOM SOLUTION SERVICES are raising the stakes of social marketing, but they also ease the sales process by providing ways for extraction machine to effectively interact with customers.