2013年8月17日星期六

Kind of SXL type cleanroom testing methods

SXL-type device is a clean room with air unidirectional flow (horizontal parallel flow) for laminar flow filtration, and by multi-stage purification, and then purified by the air supply unit air to the work area, so repeated high cycle work cleanliness cleanroom. SXL-type clean room is also equipped with FL-1-type air shower a desk, air shower installed in the clean room at the entrance, the operator must enter the clean room work through the air shower air shower. Air shower when contaminated air through the middle and high efficiency air filters, filtered clean air through the vents blowing tangential direction at high speed rotation of the human body, will be attached to blow off the dust on the clothes.
The clean room area is 13m3; cleanliness level is 100 (≥ 0.5μ total number of particles ≤ 3.5 粒 / L; total air volume ≈ 6000m3 / h, fresh air, 5%; workspace sectional average wind speed ≥ 0.35 m / s; ventilation frequency about 180 times / h; interior pressure ≥ 0.5 mm water column; noise <70 dB (A building); mains power is FL-1 type Airshower 10.1kW, 380V, DY- a type of air purification unit 1kW, 380V, 380V and 220V lighting and electrical outlets, etc. cleanroom wind shower circuit by controlling the electrical box, electrical box and is equipped with 450V 75A ammeter and voltmeter each one due to the device has a clean high, sealed, rigid, lightweight and beautiful, easy to dust, but in a relatively short period of time into a higher level of clean working environment, it is widely used in electronics, precision instruments, meters, medical and requirements of the various air clean and high production sites; also commonly used in quality control, health and epidemic prevention, hospitals and other authorities require a high degree of sterile air cleaner room, operating room.
Since the device's power supply power is larger, therefore, will be in use should be regularly current, voltage meter to send measurement department test, and note that the device is working Never overload of work, should always observe the operating status of the device when the electrical control box current, voltage meter indicated current, TFT Lcd Modules voltage and the actual use of current, voltage is consistent, the use of larger and current ammeter indicated current is very small, and you should immediately stop using the ammeter measurement department to send verification and maintenance. Also note that wind leaching room clean room cleaning, before the experiment, after dilution with 5% Lysol wipes filtered liquid air, return air purification unit, the device wall, work surfaces and Airshower filters walls and outlet, the filter cleaning unit should always be removed to clean, purify the air supply unit in order to ensure normal operation. Also, frequently clean indoor air cleanliness testing, the test requires some instruments, such as the level of cleanliness (clean indoor air dust concentration) required particle counter measurement; sectional average wind speed required heat
Ball anemometer to measure; interior pressure required tilting micro-manometer measurement; noise measurement required precision sound level meter and so on. Press the test method for measurement of the clean room, the test results are accurate, but because of this test method requires more equipment, and the use of equipment units are generally impossible to have this test condition, it is not possible according to the above method Clean room for testing. So, how do people use the clean room air cleanliness know what? Graphic LCD Module How a human right cleanroom contamination? How to make test results with true, accurate it? Here's a clean indoor air by precipitating bacterial tests to the test results to determine the cleanroom easy way. This method - by natural sedimentation sedimentation principle microorganisms collected particles in the air under high pressure to the glass plate in bacteria, adding 45 ℃ temperature nutrient agar medium, mixed core cooling, after some time under suitable conditions Reproduction allowed to count colonies visible to the colony plate clean environment to determine the number of live microorganisms, and in order to assess the clean room dust concentration.

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