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Brief Introduction of Important Standards for Testing Air Shower

Mar 25, 2019

Brief Introduction of Important Standards for Testing Air Shower

 

How can the air shower room self-check if it is qualified after leaving the factory?

 

[Summary] After the production or installation of the air shower room, for the manufacturer or owner of the air shower room, in fact, it is necessary to carry out a basic test, so that we can determine whether the air shower room is qualified, whether it can be put into use. Next, we will briefly introduce the important standards for its detection.

 

First of all, we should pay attention to the detection of the air shower chamber, which is actually the leak detection of the high efficiency filter. After the installation of this equipment, in fact, it should be in accordance with the (clean room construction and acceptance criteria) provided by the on-site leak detection method on its direct leak detection.

 

Next, pay attention to the average wind speed on the nozzle airflow. As far as the test method of nozzle wind speed is concerned, it will actually adopt the method provided by GB 8070. In fact, the average air velocity in the air shower chamber is the arithmetic average value of the air velocity readings measured at each outlet. The average wind speed of its airflow should be in accordance with the relevant regulations. In fact, the measurement of noise is because in front of the door of the air shower chamber, the center of the chamber is 1000mm outward horizontally, and the height of the chamber is 1500mm away from the ground.

 

As for the illumination of the air shower room, it should be noted that a measuring point should be set every 500 mm. As far as the distance between it and the inner wall is less than 150 mm, it should be noted that it is no longer set. When the air shower chamber is under normal working conditions, we should use the illuminometer to directly detect the various measuring points at the height of 800 mm from the ground.

 

As far as the pressure difference standard of the air shower chamber is concerned, in fact, it is necessary to install a pressure differential meter directly outside the air shower chamber to place the measuring tube directly in the air shower chamber through a sealed hole, about 1 m above the ground and 20 cm above the inner wall. Close the door of the air shower room and start the fan in the air shower room. After 15 seconds, the pressure difference between indoor and outdoor can be measured.www.wxrfcleanroom.com