There are significant differences between walk-in sand and dust test chamber and military standard sand and dust test chamber in many aspects. The specific distinctions are as follows:

I. Design Standards and Applications

Walk-in Sand and Dust Test Chamber
Design Standards: It is mainly designed and manufactured in accordance with relevant standards such as GB2423.37 “Sand and Dust Test Method” and GB/T 4208 “Degree of Protection Provided by Enclosures (IP Code)”.
Applications: It is suitable for dust resistance testing of large and heavy-duty products, such as outdoor equipment, mining equipment, and laboratory testing for elevators.
Military Standard Sand and Dust Test Chamber
Design Standards: It follows military standards such as GJB 150.12A “Environmental Test Methods for Military Equipment”.
Applications: It is specifically used to simulate sandy and dusty environments to conduct tests on the wear resistance, sealing, and protective performance of military equipment and weapon systems, ensuring their reliability and stability in harsh conditions.
II. Structure and Features
Walk-in Sand and Dust Test Chamber
Structure: It has a large volume and typically adopts a frame structure, which includes the test room, dust collection device, control cabinet, etc.
Features: It has a large capacity and strong dust-blowing capability, making it suitable for testing large products or equipment. The equipment door is equipped with an observation window and a dust-wiping wiper, which facilitates the observation of the interior.
Military Standard Sand and Dust Test Chamber
Structure: It has an overall frame (rotary) structure, with the test chamber located in the middle of the equipment, the fan in the middle and rear part of the equipment, and the rotary circulation air duct connecting the test device.
Features: It has a high-precision control system that can precisely control and adjust parameters such as temperature, humidity, sand and dust concentration, and wind speed. The chamber door is equipped with an observation window and a sand and dust wiper. The test chamber has a single door design and uses double-layer aging-resistant silicone rubber sealing.
III. Test Conditions and Parameters
Walk-in Sand and Dust Test Chamber
Test Conditions: It usually simulates natural sandy and dusty environments by manually controlling the dust concentration and airflow velocity for testing.
Parameters: Specific parameters, such as dust concentration and airflow velocity, can be adjusted according to the test requirements.
Military Standard Sand and Dust Test Chamber
Test Conditions: It simulates a more stringent sandy and dusty environment, including high-concentration sand and dust and high-speed airflow.
Parameters: It has clear test parameter requirements. For example, the dust-blowing wind speed is usually 8.9m/s±1.2m/s (adjustable automatically), and the sand-blowing wind speed is 18~29m/s (adjustable automatically). Parameters can also be set according to specific test requirements.