Blowing Sand Test Chamber with Adjustable Wind Speed
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Web: standard-groups.com
Standards
(1)GB/T 2423.37-2006 Environmental Testing – Part 2: Test Methods – Test L: Dust and Sand Test
(2)GJB 150.12A-2009 Laboratory Environmental Test Methods for Military Equipment – Part 12: Dust and Sand Test
(3)IEC 60068-2-68 Environmental Testing – Part 2-68: Tests – Test Lb: Dust and Sand
(4)IEC 61300-2-27 Fibre Optic Interconnecting Devices and Passive Components – Basic Test and Measurement Procedures – Part 2-27: Dust Test
Parameters
| Item | Technical Specification |
|---|---|
| Working chamber size | Approx. 1000 × 1000 × 1000 mm (W × H × D) |
| Overall dimensions | Approx. 6500 × 2400 × 3400 mm (subject to actual equipment) |
| Temperature range | RT ±10 to 70 ℃ |
| Humidity range | ≤30% RH (display only, not adjustable) |
| Fine dust particle size | ≤75 μm |
| Coarse dust particle size | ≤150 μm |
| Horizontal dust/sand blowing wind speed | 1.5–29 m/s, continuously adjustable |
| Dust blowing concentration | 10.6 g/m³ ±7 g/m³ |
| Dust blowing wind speed | 1.5–8.9 m/s |
| Sand blowing concentration | 0.18 ±0.15 g/m³ / 1.1 ±0.3 g/m³ / 2.2 ±0.5 g/m³ |
| Sand blowing wind speed | 18–29 m/s |
| Sand blowing duration | 90 min (extendable) |
| Airflow type | Horizontal laminar flow |
| Sample size | 300 × 300 mm |
| Sample quantity | 3 pieces |
| Hua stone powder dosage | 2–5 kg/m³ (25 kg standard supply) |
| Power supply | AC 380 V ±10%, three-phase five-wire system, 80 A air circuit breaker |
Features
Horizontal laminar airflow design ensures uniform dust distribution and high test repeatability
Separate pre-treatment chamber and test chamber airflow circulation structure realistically simulates natural wind-sand environments
Multi-stage testing modes including dust blowing, sand blowing, and dust deposition for complex environmental simulation
Real-time dust concentration monitoring with automatic compensation to maintain stable test conditions
Inner and outer chambers constructed from high-grade stainless steel for corrosion and abrasion resistance
Supports high-temperature dust and sand blowing conditions for extreme photovoltaic environment testing
PLC and touchscreen intelligent control system with flexible parameter settings and intuitive operation
Accessories
(1)Dust circulation fan (all-plastic centrifugal fan)
(2)Dust collection box
(3)Vacuum system (vacuum pump, pressure regulating valve, suction nozzle, connecting pipes)
(4)Dust storage tank (for Hua stone powder)
(5)Metal mesh screen (wire diameter 50 μm, spacing 75 μm)
(6)Dust concentration meter with analog signal feedback to PLC
(7)Heating system (316 stainless steel heating elements)
(8)LED lighting system (high-intensity top illumination)
(9) Observation window with electrically heated anti-fog film
Test Procedures
Measure and record the initial light transmittance of the photovoltaic module before testing
Install samples inside the chamber at a 45° angle relative to the horizontal plane and secure firmly
Conduct dust blowing, sand blowing, and dust deposition tests sequentially
Dust blowing stage: 6 hours at 23 ℃, with optional high-temperature dust blowing at 60 ℃
Sand blowing stage: high-speed sand blowing at 18–29 m/s under 60 ℃ conditions
Dust deposition stage: static settling for 3 days at 23 ℃ ±2 ℃
Clean and dry the samples after completion of all test stages
Re-measure light transmittance and calculate the attenuation rate
Maintenance Information
Regularly clean the dust circulation system, dust storage tank, and collection box to prevent accumulation and blockage
Inspect fans, heating elements, and airflow channels periodically to ensure stable airflow performance
Check seals, observation windows, and electrical connections for wear or aging
Replace dust powder and filters according to usage frequency and test standards
Perform calibration of wind speed and dust concentration measurement systems as required by test protocols
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