ISO 14644-1 clean room pressure difference is the static pressure difference that must be maintained between the clean room and the surrounding space. The necessary pressure difference is a means to control the direction of air leakage and is the basic condition for normal operation. In order to ensure cleanliness, the iso14644-1 clean room of the microelectronics industry does not allow low cleanliness air to leak to high cleanliness areas. Virus laboratories or infectious wards are not allowed to leak indoor air to the outside.
In order to control the direction of air leakage between regions, there are stricter requirements for the air pressure difference between regions. Generally, the air pressure in the iso clean room is required to be higher than that of the outdoor, or the air pressure of the high-level iso14644-1 clean room is required to be higher than that of the low-level clean room, or the indoor air pressure is required to be lower than the outdoor. Industrial clean rooms and general biological iso14644-1 clean rooms are used to maintain positive pressure. For iso14644-1 clean rooms that use toxic and harmful gases or flammable and explosive solvents or operate with high dust, biological clean rooms that produce allergenic drugs, highly active drugs and other biological iso14644-1 clean rooms with special requirements Negative pressure needs to be maintained. Therefore, it is very important to measure the air pressure difference of the iso14644-1 clean room.
The purpose of iso14644-1 clean room pressure difference detection is to measure the static pressure difference of iso14644-1 clean room, it can be positive pressure or negative pressure, in order to prevent the contamination of the air flow in the clean room (outside). When a certain static pressure difference is maintained between rooms with different air cleanliness grades or different product production process properties according to regulations, if the static pressure difference between adjacent iso clean rooms is too large or the gap caused by construction reasons, it will be Cause air leakage, and in severe cases, the air flow in the clean room will be disordered, so the static pressure difference between iso14644-1 clean rooms ranges from 5 to 20Pa, and feasible technical measures should be taken to control the static pressure difference between iso14644-1 clean rooms. .
Hailiheng is a company specializing in third-party inspection. Its main service targets are enterprise customers in new drug research and development, biotechnology, medical and other industries. The service content is mainly to provide equipment involving temperature, humidity and cleanliness. Test verification.