OK-HC-900.00 Sand and Dust Test Chamber

Overview

The OK-HC-900.00 Sand and Dust Test Chamber is a precision-engineered environmental simulation system designed to evaluate the ingress protection (IP) performance, sealing integrity, and surface abrasion resistance of enclosures, electronic housings, optical assemblies, and mechanical components under controlled airborne particulate exposure. It operates on the principle of forced-air suspension and directional particle impingement—mimicking real-world desert, industrial, or off-road dust/sand environments per internationally recognized test protocols. Unlike thermal or humidity chambers, this system prioritizes aerodynamic fidelity: precise control over particle concentration, velocity profile, and spatial uniformity ensures repeatable, standards-compliant validation of IP5X (dust-tight), IP6X (dust-tight and sand-resistant), and MIL-STD-810G/H Method 510.7 (sand and dust) requirements. Its compact chamber volume (<3 m³) positions it as a standardized, laboratory-grade solution for component-level qualification—not large-scale vehicle or energy storage system testing, which demands walk-in facilities.

Key Features

• Stainless steel 304 inner chamber with seamless welding and electropolished interior surfaces for corrosion resistance and low particle adhesion.
• Dual-layer silicone-sealed observation window with anti-static coating and integrated LED lighting for real-time visual inspection without compromising containment.
• Programmable high-efficiency centrifugal blower delivering stable, turbulence-minimized airflow from 0 to 29 m/s, calibrated traceably to ISO 5167.
• Vibratory feed system coupled with precision screw feeder ensures gravimetrically consistent dust introduction—critical for maintaining target concentrations within ±7 g/m³ tolerance.
• Rotating sample turntable (0–10 rpm, adjustable) compliant with IEC 60529 Annex B and ISO 20653 for dynamic IP6X evaluation of rotating or asymmetrical devices.
• PLC-based control architecture with 7-inch HMI touchscreen interface supporting multi-step test profiles, data logging (timestamped wind speed, concentration, runtime), and USB export.
• Integrated HEPA + cyclonic dual-stage filtration system meeting EN 1822-1 H13 classification, ensuring <0.01 mg/m³ ambient leakage and operator safety during maintenance.

Sample Compatibility & Compliance

The OK-HC-900.00 accommodates samples up to 800 mm × 800 mm × 800 mm (W×D×H) on its motorized turntable. It supports both powered and unpowered device-under-test (DUT) configurations, with optional through-wall electrical feedthroughs rated to IP67. The chamber meets essential compliance frameworks including: IEC 60529 (IP5X/IP6X), ISO 20653:2013 (road vehicles), MIL-STD-810G/H Method 510.7 (sand/dust), GJB 150.12A-2009 (Chinese military standard), and ASTM D5757-21 (standard practice for dust testing). All airflow and concentration uniformity metrics are validated per ISO 16750-4 Annex A and verified via calibrated optical particle counters (OPCs) and pitot-static probes at nine predefined chamber locations prior to factory acceptance testing.

Software & Data Management

The embedded control software enables full test sequence programming—including ramped velocity profiles, staged concentration cycles, and dwell-time logic—with user-defined pass/fail thresholds. Real-time parameter monitoring includes digital readouts for volumetric flow rate (m³/h), differential pressure across filters (Pa), and temperature (±0.5°C). Logged data conforms to GLP/GMP audit requirements: each record contains operator ID, timestamp, calibration certificate IDs for sensors, and digital signatures. Export formats include CSV and PDF reports compatible with LIMS integration. Optional Ethernet connectivity supports remote diagnostics and firmware updates—fully compliant with FDA 21 CFR Part 11 for electronic records and signatures when configured with audit trail enablement.

Applications

This chamber serves critical reliability validation roles across multiple sectors: automotive (ECUs, connectors, headlamp housings, battery enclosures); aerospace (avionics cooling vents, UAV sensor pods); industrial automation (motor drives, PLC cabinets, explosion-proof junction boxes); consumer electronics (smartphone chassis, outdoor cameras, wearable housings); and renewable energy (solar inverter enclosures, wind turbine pitch controllers). It is routinely deployed for design verification, production line incoming inspection, and pre-certification testing prior to third-party IP rating submission.

FAQ

What dust specification does the OK-HC-900.00 use for IP6X testing?

It utilizes standardized Arizona Road Dust Test Dust (ISO 12103-1, A2 grade) or equivalent silica-based particulate (97–99% SiO₂), traceably certified per ASTM D5757.
Can the chamber operate continuously for extended duration tests?

Yes—rated for uninterrupted operation up to 96 hours per cycle, with automatic dust replenishment and thermal management to maintain blower motor stability.
Is temperature or humidity control available as an option?

No—the OK-HC-900.00 is a dedicated dry particulate chamber. For combined sand/dust + climate testing, OK Instruments offers the OK-HC-900.C series with integrated refrigerated dehumidification and heating modules.
How is dust concentration measured and verified in real time?

Via a calibrated laser scattering photometer (TSI AM510) installed in the recirculation duct, providing continuous feedback to the PLC for closed-loop concentration regulation.
Does the system support automated reporting for ISO/IEC 17025 accredited labs?

Yes—report templates include uncertainty budgets, equipment calibration status, environmental conditions, and raw sensor outputs, fully traceable to NIST-traceable references.