Customer Stories

Military Standard Dust and Sand Test Chamber

I. Product Overview

Military Standard Dust and Sand Test Chamber It is applicable to military mechanical equipment and electromechanical devices, such as electrical and electronic components, optical parts, seals, and other products, assessing their adaptability when exposed to dry sandblasting, dust-blowing, and dust‑settling conditions.

This equipment is a high-precision environmental simulation test system specifically designed for the type‑approval, research and development, and batch acceptance of military hardware. Complies with GJB 150.12A-2009 “Military Equipment Laboratory Environmental Test Methods, Part 12: Sand and Dust Test” , while remaining compatible with relevant international standards; can be completed in an integrated manner Dust blowing, sandblasting, dust suppression The three major test procedures accurately replicate extreme sand‑dust environments such as deserts, gobi regions, and battlefield conditions, evaluating the dust‑erosion resistance of equipment’s sealing structures, internal components, and mechanical parts, while identifying potential issues like jamming, poor contact, and short circuits. These tests provide authoritative evidence for assessing the dust‑proof reliability of the equipment.

It is widely used for dust‑proof testing of military equipment, vehicle‑mounted defense systems, aerospace components, communication and radar systems, individual soldier gear, electronic instruments, and other military‑grade as well as high‑reliability civilian products (such as outdoor renewable‑energy devices and security cameras meeting defense‑grade standards).

II. Functional and Technical Advantages

1. Program Integration : One single device can perform three types of tests without any additional modifications. Dust blowing (≤149 μm, wind speed 1.5–8.9 m/s, concentration 10.6 ± 7 g/m³); sandblasting (150–850 μm, wind speed 18–29 m/s, with multiple adjustable concentration levels); and dust settling (≤105 μm, wind speed <0.2 m/s, low‑concentration deposition). The system automatically switches between modes throughout the entire process and records data in real time.

2. Precision temperature and dust control Temperature range: 23–80°C, adjustable; relative humidity ≤30% RH. Equipped with an imported infrared dust concentration sensor and a closed-loop control system. Dust particle size is rigorously screened using standard sieves (Arizona Test Dust A2 Fine is recommended, with quartz content ≥80%). Concentration and air velocity exhibit minimal fluctuations, ensuring test repeatability and impartiality.

3. Robust and Durable Construction The inner chamber is constructed from 1.2 mm SUS304-2B stainless steel, featuring a funnel‑shaped design paired with an automatic vibration and recovery system to prevent sand and dust from adhering to the walls. The outer shell is made of cold‑rolled steel with an electrostatic powder coating, offering excellent corrosion resistance and impact durability. The door is equipped with a tempered glass observation window and LED lighting, enabling convenient real-time monitoring of the specimen’s condition.

4. Intelligent Security System : 7-inch touchscreen + PLC programmable control system, supporting test‑curve storage, data export, and remote monitoring; equipped with alarms for over‑temperature, over‑voltage, leakage current, short circuit, and dust‑clog detection, as well as independent power protection for the specimen, ensuring both equipment and operator safety; an electrostatic device effectively prevents dust adhesion from compromising test accuracy.

5. Customization and Qualification Assurance : Offers a variety of chamber volumes (e.g., 800×800×800 mm, 1000×1000×1000 mm, etc.), with optional features such as temperature–humidity control, vacuum assistance, and multi‑station sample racks. The equipment is calibrated in accordance with metrological standards, and the company holds more than 30 proprietary R&D technologies. Comprehensive services are provided, including installation and commissioning, training, and after‑sales maintenance.

III. Technical Specifications Table

Test item	Parameter Metrics
Dust blowing	Particle diameter ≤ 149 μm; wind speed 1.5–8.9 m/s; concentration 10.6 ± 7 g/m³ (adjustable)
Sandblasting	Sand particle diameter: 150–850 μm; wind speed: 18–29 m/s; concentrations: 1.1 ± 0.3 g/m³, 2.2 ± 0.5 g/m³, etc.
Dust suppression	Particle diameter ≤ 105 μm; wind speed < 0.2 m/s; concentration adjustable between 0.1 and 10.6 g/m³.
Environmental Control	Temperature: 23–80°C (tolerance ±2°C); Humidity: ≤30% RH
Control method	Touchscreen + PLC, supporting program editing, data storage, and remote communication.