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Blowing Sand Test Chamber with Adjustable Wind Speed

Whats/App: +86 156 1874 6768

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

ItemTechnical 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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