ZhuLan ZLHS-250-SC Sand and Dust Environmental Test Chamber with Temperature Control

Overview

The ZhuLan ZLHS-250-SC Sand and Dust Environmental Test Chamber with Temperature Control is an engineered solution for evaluating the ingress protection (IP) performance of mechanical, optical, electrical, electronic, electro-mechanical, and electrochemical equipment under simulated arid, airborne particulate environments. Designed in strict accordance with GB/T 2423.37–2006 (Test L: Sand and Dust), this chamber replicates conditions where dry, non-abrasive or mildly abrasive particulates—including talc, silicate cement, and fly ash—are suspended at controlled concentrations (2–4 kg/m³) and transported at a defined velocity (2 m/s) across test specimens. Unlike wind-driven sand erosion testers (e.g., GJB 150.12A-compliant systems), the ZLHS-250-SC focuses on dust deposition, penetration through apertures, seams, bearings, and joints, and functional degradation due to particle accumulation—not high-velocity abrasive wear. Its integrated temperature control capability enables combined thermal-dust stress testing, supporting reliability validation across broader environmental profiles relevant to automotive ECUs, outdoor lighting fixtures, industrial sensors, and consumer electronics enclosures.

Key Features

• Robust dual-zone construction: Outer shell fabricated from high-grade cold-rolled steel with electrostatic epoxy powder coating; inner chamber lined with imported SUS304 stainless steel and reinforced tempered glass viewing door for real-time sample observation.
• Precision-controlled particulate delivery: Programmable centrifugal blower with VFD-based speed regulation ensures stable 2 m/s airflow velocity—fully compliant with GB/T 2423.37–2006 and IEC 60529 Annex B requirements for IP5X/IP6X dust testing.
• Modular vacuum-assisted dust circulation: Equipped with calibrated vacuum gauge, FRL (filter-regulator-lubricator) unit, and dedicated vacuum interface—enabling adjustable negative pressure to enhance particle suspension uniformity and prevent sedimentation during extended cycles.
• Intelligent multi-stage timing architecture: Moeller/Klockner programmable controller provides four independent output channels, each configurable with dual time parameters (ON/OFF duration), enabling synchronized or staggered control of dust blowing, vibration actuation, vacuum cycling, and total test duration (up to 99 h 59 min).
• Integrated safety and traceability: Comprehensive protection suite includes leakage current detection, thermal cutoffs, motor overheat sensing, and overcurrent relays. All operational events—including power interruption—are logged with timestamped records retained for ≥10 years.
• Mobility and serviceability: Heavy-duty PU casters with locking brakes facilitate repositioning; bottom-mounted dust replacement port allows rapid media exchange without chamber disassembly.

Sample Compatibility & Compliance

The ZLHS-250-SC accommodates samples up to 600 × 750 × 550 mm (W×H×D), making it suitable for full-assembly evaluation of lighting housings (per GB 7000.1–2007), automotive connectors, HVAC control modules, and industrial control panels. It satisfies test requirements for IP5X (dust-protected) and IP6X (dust-tight) classifications per IEC 60529 and GB 4208. Validation documentation supports GLP-aligned lab audits, including controller event logs, vacuum pressure calibration records, and blower velocity verification reports. While not designed for GJB 150.12A’s high-velocity sand abrasion protocols, it fully meets national standards for static and low-velocity dust ingress assessment—widely accepted by Chinese CCC certification bodies and Tier-1 OEM QA labs.

Software & Data Management

The embedded Moeller/Klockner controller operates without external PC dependency, offering intuitive keypad navigation, real-time parameter display (blower status, vacuum level, elapsed time), and password-protected program editing. All test sequences—including multi-step dust-on/vibration-off cycles—are stored in non-volatile memory. Event logs capture start/stop timestamps, fault codes, and manual interventions, formatted for CSV export via optional USB interface (available upon request). The system complies with basic data integrity principles per ISO/IEC 17025:2017 Clause 7.5.2—ensuring audit-ready traceability for QC laboratories operating under CNAS or CMA accreditation frameworks.

Applications

• Verification of enclosure sealing integrity for LED streetlights, traffic signal housings, and explosion-proof junction boxes.
• Functional endurance testing of automotive infotainment displays, battery management systems (BMS), and ADAS sensor housings exposed to desert or construction-site dust.
• Reliability qualification of industrial PLCs, motor drives, and power distribution units installed in dusty manufacturing or mining environments.
• Pre-compliance screening for consumer appliances (e.g., outdoor-rated power tools, garden equipment) targeting IP54–IP65 certification.
• Material compatibility studies—assessing filter media clogging rates, gasket compression set under particulate loading, and lubricant contamination thresholds in rotating mechanisms.

FAQ

Does the ZLHS-250-SC support simultaneous temperature and dust testing?

Yes—its integrated heating system (stainless steel mica-sheathed elements) enables operation across –10°C to +80°C ambient ranges during dust exposure cycles, facilitating combined thermal-dust stress analysis.

Is vacuum capability mandatory for standard dust tests?

Not universally—but vacuum assist improves particle suspension homogeneity and repeatability, especially for low-density powders like talc. It is recommended for IP6X validation per GB/T 2423.37–2006 Annex A.

Can the controller store multiple test programs?

Yes—the Moeller/Klockner unit retains up to 16 user-defined programs with full ON/OFF timing logic per output channel.

What maintenance intervals are recommended for the blower and filtration system?

Blower bearings require lubrication every 6 months; the primary air filter must be inspected weekly and replaced when differential pressure exceeds 150 Pa (typical service life: 3–6 months under continuous use).

Is third-party calibration support available?

Yes—ZhuLan provides NIST-traceable calibration certificates for vacuum gauges and air velocity sensors, valid for 12 months post-installation.