Relevant Instructions of Sand Dust Test Chamber

The sand dust test chamber is used to detect the sealing performance of the industrial shells. It is mainly tested according to IP5x and IP6x to simulate the dust environment encountered by industry in the process of production, transportation, and storage, to detect the protection performance of its shell.

The following is a brief introduction to the relevant instructions for the sand dust test chamber.

Temperature range of sand dust test chamber

It refers to the limited temperature that the industrial studio can withstand and/or reach. It usually includes a concept of constant control, and the sand dust test chamber should be the limit value that can operate stably for a long time. The general temperature range includes extreme high temperatures and extremely low temperatures.

Temperature fluctuation of the sand dust test chamber

This index is also called temperature stability. Control the difference between Z height and Z low temperature at any point in the workspace at any given time interval after the temperature is stable. There is a small difference here: "workspace" is not "studio", but the space in which the studio removes 1 / 10 of the length of each side from the box wall. This indicator evaluates the control technology of the industry.

Uniformity of warm sand dust test chamber

The old standard is called uniformity and the new standard is called gradient. After the temperature is stable, the Z value of the average temperature difference between any two points in the working space of the sand dust test chamber in any time interval. This indicator can better evaluate the core technology of the industry than the following temperature deviation indicators, so many companies deliberately hide the project in their samples and schemes.

Temperature deviation of the sand dust test chamber

After the temperature is stable, there is a difference between the average value of the central temperature of the working space of the sand dust test chamber and the average value of the temperature of other working space points in any time interval. Although the definition and appellation of the index are the same in the old and new standards, the detection has changed. The new standard is more practical and harsh, but the assessment time is shorter.

Dustproof grade of the sand dust test chamber

There are dust-proof test requirements for portable, outdoor use, and automotive electronics, and there are corresponding test requirements on IEC, mil, ETSI, and SAE.

According to IEC / en60529, the dust-proof level is divided into 7 levels (level 0 ~ 6), and the dust-proof level (e.g. ip5x - dust-proof level 5)

• Level 0: completely dust-free protective device.

• Level 1: it can be protected to prevent foreign matters with a diameter greater than 50mm from falling into the equipment.

• Level 2: it can be protected to prevent foreign matters from falling into equipment with a diameter of more than 12.5mm.

• Level 3: it can be protected to prevent foreign matters from falling into equipment with a diameter of more than 2.5mm.

• Level 4: it can be protected to prevent foreign matters from falling into equipment exceeding 1.00mm.

• Level 5: dust cannot be completely prevented from entering, but the amount of dust entering shall not affect the normal operation of the equipment and the use safety.