After the completion of the clean workshop, it is necessary to carry out a variety of detection and test items for the clean workshop, in order to check and understand whether the indicators of the clean workshop are qualified; But sometimes we detect more items are temperature and humidity, dust particles, ground conductive resistance, wall resistance, illuminance, return air volume, wind pressure, pressure, etc., but rarely for the cleaning workshop air tightness detection. Air tightness testing can be carried out in the following two ways.

Haili heng purification company is a professional manufacturer of air purification equipment, the products are widely used in electronics, electrical appliances, medicine, food, scientific research and other industries, and has the overall system service system for security and rich production experience.

Today Hailey Constant purification xiaobian take you to see: what are the air tightness detection methods of clean workshop?

1. Pressure attenuation

Make the clean workshop reach a certain pressure (positive pressure or negative pressure), and then close the pressure supply or negative pressure system, carefully observe the pressure slowly reduced with time, and then record the pressure reduced to half the time of the starting pressure, that is, measure the half-life of the positive or negative pressure in the clean workshop (room).

2. The constant-voltage method

When a certain positive pressure is reached in the clean workshop, the gas is added in the clean workshop, so that the chamber pressure reaches the required stable value without reducing the amount of added gas is the leakage amount. When a certain negative pressure is reached in the clean workshop, the chamber pressure is maintained at the required stable value, and the pumping amount is the leakage amount.