UL 50E Dust Tester | Sand Blast Enclosure Dust Ingress Test Apparatus
The UL 50E Dust Tester is a sand blast test apparatus designed for dust ingress testing of electrical enclosures in accordance with UL 50E-2020 Clause 8.4.1.1.
- Standard Compliance: UL 50E-2020 Clause 8.4.1.1 โ sand blast dust ingress test for enclosures
- Sand Blast Gun: Suction type with 4.7 mm air ejector and 9.5 mm nozzle
- Spray Pressure: 620-690 kPa
- Test Screen: Square screen with 50 ฮผm wire diameter and 75 ฮผm gap
- Test Distance: Nozzle to shell 305-380 mm
- Powder Control: 2.27 kg/min slaked lime powder with automatic recycling
- MOQ: 1
- Delivery Period: 30 working days
UL 50E Dust Tester Description
UL 50E Dust Tester | Sand Blast Enclosure Dust Ingress Test Apparatus
The UL 50E Dust Tester | Sand Blast Enclosure Dust Ingress Test Apparatus is a professional dust ingress test system manufactured by KingPo. It is specifically designed to evaluate the dust protection performance of electrical enclosures using the sand blast method, in full accordance with UL 50E-2020 Clause 8.4.1.1.
Technical Parameters
Test Performance Parameters
| Parameter | Specification | Remark / Notes |
|---|---|---|
| Standard | UL 50E-2020 Clause 8.4.1.1 | Sand blast dust ingress test for electrical enclosures |
| Sand Blast Gun Type | Suction type | Air ejector diameter 4.7 mm, nozzle diameter 9.5 mm |
| Spray Pressure | 620โ690 kPa | Precisely regulated for consistent and repeatable dust delivery |
| Test Screen | Square mesh, wire diameter 50 ฮผm, gap 75 ฮผm | Exact dimensions required by UL 50E for dust particle simulation |
| Nozzle to Enclosure Distance | 305โ380 mm (adjustable) | Critical test distance for standardized dust impingement |
| Dust Delivery Rate | 2.27 kg/min (slaked lime powder) | Automatic recycling system maintains constant concentration |
| Parameter | Specification | Remark / Notes |
|---|---|---|
| Inner Test Chamber Volume | 1000 ร 1000 ร 1000 mm | Large internal volume accommodates various enclosure sizes |
| Pressure Measurement | Pipe balance box (internal & external) | Accurate differential pressure monitoring per UL 50E requirements |
| Powder Supply | 50 kg dry slaked lime powder provided | Sufficient quantity for extended test campaigns |
| Powder Recycling | Automatic internal recycling system | Minimizes operator exposure and maintains stable test conditions |
| Power Supply | AC 220 V, 50/60 Hz | Standard single-phase laboratory power supply |
The UL 50E Dust Tester features a robust test chamber with precise pressure control and a high-efficiency sand blast gun. The square test screen is manufactured to exact 50 ฮผm wire diameter and 75 ฮผm gap specifications. A dedicated pipe balance box accurately measures internal and external pressures to ensure compliance with the standard. The automatic powder recycling system maintains consistent dust concentration while minimizing operator exposure and waste. All critical components are designed for long-term stability and repeatability in laboratory environments.
Testing Principle
The apparatus uses a suction-type sand blast gun to direct a controlled stream of dry slaked lime powder toward the enclosure under test at a specified pressure and distance. The test evaluates the enclosureโs ability to prevent dust ingress under the conditions defined in UL 50E-2020 Clause 8.4.1.1.
Common Error Mitigation
To ensure repeatable and accurate results, always verify the nozzle-to-shell distance and spray pressure before each test. Maintain consistent powder flow rate and regularly inspect the test screen for clogging or damage. Perform a pressure balance check using the pipe balance box prior to testing.
Primary Use Cases & Business Value
The UL 50E Dust Tester is used by electrical enclosure manufacturers and certification laboratories to verify dust protection performance, ensuring enclosures meet UL 50E environmental requirements for indoor and outdoor applications.
Industrial Applications & Lab Scenarios
- Electrical enclosure manufacturers โ dust ingress testing per UL 50E-2020
- Third-party certification laboratories โ compliance verification for Type-rated enclosures
- R&D departments โ development and optimization of dust-tight enclosure designs
- Quality control teams โ batch verification of enclosures for indoor/outdoor use
- Regulatory compliance teams โ demonstration of dust protection performance for market approval
Strategic Procurement Advantages & Global Support
- High-Efficiency Testing: Automated powder recycling and precise pressure control deliver consistent, repeatable UL 50E dust ingress results.
- Certified Manufacturing: ISO 9001/14001/45001 and CE certified production with ISO 17025 traceable calibration ensures laboratory-grade reliability.
- Reliability & Support: Each unit undergoes rigorous factory calibration in our Dongguan facility and is backed by a full one-year warranty, on-site installation guidance, and lifetime technical engineering support.
Compliance & Regulatory Assurance
This equipment is designed and manufactured in accordance with UL 50E-2020 Clause 8.4.1.1 for sand blast dust ingress testing of electrical enclosures. It provides a standardized, reproducible test method essential for demonstrating compliance with UL environmental protection requirements.
For detailed information on test procedures, please refer to the latest edition of UL 50E. Regular inspection of the sand blast gun, screen and pressure system is recommended to maintain accuracy.
Technical Inquiry & Expert Support
KingPo provides validated UL 50E Dust Testers for enclosure dust ingress testing. Contact our engineering team for custom configurations and setup support.
The Core Value We Deliver
- UL 50E Compliance: Exact sand blast test setup per Clause 8.4.1.1 for reliable dust ingress evaluation.
- Precise Control: 620-690 kPa spray pressure with 9.5 mm nozzle and 50 ฮผm screen for repeatable results.
- Automated Recycling: 2.27 kg/min slaked lime powder with automatic recovery system.
- Lab Ready: 1000ร1000ร1000 mm chamber with pressure balance box and complete test accessories.
- Fast Response: Get a tailored technical recommendation within 24 hours.
UL 50E Dust Tester Detail Display
UL 50E Dust Tester FAQs
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