IPX9K is a waterproof rating standard that is often used to evaluate the waterproof performance of product housings.
In this standard, "IP" represents the level of Protection (Ingress Protection), "X" indicates the dust protection level (usually there are 6 dust protection levels such as IP12X, IP34X, IP56X), and "9K" represents the ninth level of waterproof level.
IPX9K waterproof grade test is performed by spraying the housing with water flowing out through a standard test nozzle. And the water temperature should be maintained at (80±5) ℃ when the shell is tested for waterproofing. The water injection angles are 0°, 30°, 60°, 90°.
The relevant standards followed include ISO 16750-1-2006 (General requirements for environmental conditions and testing of electrical and electronic equipment for road vehicles), ISO 20653 (Road vehicles - Protection Class IP code - Protection of electrical equipment against foreign objects, water and contact), GMW 3172 (2007) (General requirements for vehicle environment, reliability and performance), VW 80106-2008 (General test conditions for electrical and electronic components in autono-housings), QC/T 417.1 (2001) (Automotive harness connectors Part 1 IEC 60529 Electrical Enclosure Protection Classification Class (IP) code), etc.
IPX9K waterproof test chamber can simulate the high temperature and high pressure jet water environment and evaluate the waterproof performance of the product shell. This paper will discuss two kinds of common IPX9K waterproof test chamber, namely chamber-type IPX9K waterproof test chamber and No-housing IPX9K waterproof test chamber, and make detailed analysis and comparison from their working principle, structural characteristics, application scenarios, advantages and disadvantages.
IPX9K waterproof test chamber is based on the IPX9K waterproof rating standard. The standard requires that the test equipment can produce a high temperature (about 88 ° C), high pressure (8-10 MPa) jet water, from different angles to impact the test sample, the duration of 30 seconds.
The IPX9K waterproof test chamber uses a heating system and a high-pressure pump forming a high-speed jet stream through a special nozzle. At the same time, the temperature, pressure, injection angle and time of the water flow are precisely adjusted through the control system to meet the test requirements of IPX9K standard.
(1) Structural characteristics
Step 1: Shell
The exterior shell of IPX9K waterproof test chamber is made of steel plate with protective coating. After spraying paint treatment has good rust and corrosion resistance.
Step 2. Inside chamber
The inner chamber and turntable are generally made of sus304 stainless steel plate, which can withstand the impact of high temperature and high pressure water flow, and is not easy to rust, to ensure the long-term stable operation of the test chamber.
Step 3: Water tank
It comes with a water tank, located at the bottom of the test tank, and circulates water. The water tank is equipped with a water level float ball valve, which can automatically control the water intake, and has a low water level alarm detection to prevent the water pump from being damaged.
Step 4. Observation Windows and lighting
The door is provided with a transparent observation window, which is made of tempered glass to facilitate the observation. led lighting is installed in the case to ensure that it is clearly visible during testing.
Step 5. Control system
Using touch screen +PLC as the core control system, the operation interface is intuitive and simple, easy to set test parameters and monitor the test process.
(2) Advantages
1. High stability
Due to its stable structure and excellent selection of components, it can maintain stable performance in long-term use and reduce the probability of failure.
2. High test accuracy
The precise control system and high-quality nozzles ensure the accuracy of the temperature, pressure and injection angle of the water flow, thus improving the reliability of the test results.
3. Good security
Perfect safety protection devices, such as overload protection, leakage protection, etc., can effectively ensure the safety of operators.
(1) Application scenarios
1. On-site inspection
For some large equipment or products that cannot be moved, the no-housing test chamber can be brought to the site for testing to improve the convenience of detection.
2. Temporary detection point
In some temporary testing sites, such as exhibition sites, outdoor construction sites, etc., no-housing test chambers can be quickly deployed and put into use.
3. Rental service
It can be used as rental equipment to provide short-term waterproof testing services for different users.
(2) Advantages
1. Strong flexibility
It can flexibly move to different test locations according to actual needs and adapt to various complex test environments.
2. Lower cost
For some users who do not use frequently or have limited budgets, the acquisition cost of no-housing test chambers is relatively low.
3. Rapid deployment
When testing is required, it can be ready quickly, saving time.
(1) Performance
The chamber-type performs better in terms of temperature control accuracy, pressure stability and spray angle uniformity, and is suitable for occasions where the test results are required to be higher. Although the performance of no-housing is slightly insufficient, it can still meet the basic IPX9K test needs in most cases.
(2) Convenience of use
The no-housing type has the obvious advantage of being able to be easily transferred between different locations, while the chamber-type is more suitable for long-term use in places such as laboratories.
(1) Select according to the usage scenario
If the test work is mainly carried out in the laboratory, and the test accuracy and stability requirements are high, the chamber-type IPX9K waterproof test chamber should be preferred. If field tests or temporary inspections need to be carried out frequently in different locations, a no-housing test chamber is more suitable.
(2) Select according to the budget
In the case of sufficient budget, chamber-type test chamber is a better choice. If the budget is limited and the requirements for test performance are not particularly demanding, the no-housing test chamber can meet the basic needs.
(C) According to the characteristics of the test sample selection
For large, batch test samples, the chamber test chamber can provide more test space and higher efficiency. For small, scattered test samples, the flexibility of the no-housing test chamber is more advantageous.
Chamber-type IPX9K waterproof test chamber and no-housing IPX9K waterproof test chamber have their own characteristics , users should be based on the actual demand, use scenario,and other factors for comprehensive consideration when choosing.
Whether it is chamber-type or no-housing test chamber, they provide an important means for the waterproof performance test of products, which helps to improve product quality and enhance the competitiveness of products in the market.
