OK LS-807 Oscillating Pipe Rain Test Chamber

Overview

The OK LS-807 Oscillating Pipe Rain Test Chamber is an engineered environmental test system designed to replicate controlled rainfall conditions in accordance with internationally recognized ingress protection (IP) testing standards—specifically IEC 60529 and GB 4208 for IPX3 and IPX4 ratings. It employs a motor-driven oscillating pipe mechanism with precision-aligned nozzles to deliver reproducible, directional water exposure across defined angular sweeps (typically ±60° or ±90° from vertical). Unlike static spray methods, this dynamic configuration subjects test specimens—mounted at the pivot center—to cyclical, multi-angle wetting that mimics real-world rain exposure under wind-assisted conditions. The chamber integrates temperature control (RT+10°C to 55°C), programmable wind simulation (5–18 m/s), and calibrated droplet generation (0.5–4.5 mm diameter) to extend fidelity beyond basic IP compliance into application-relevant environmental stress profiling. Its architecture supports both stationary and slow-rotation sample mounting (1–3 rpm optional), enabling uniform exposure of complex geometries without manual repositioning.

Key Features

• Oscillating pipe assembly with adjustable sweep angle (±60° standard; configurable up to ±90°) and precise angular velocity control (e.g., full 120° cycle in ~4 s)
• Stainless steel (SUS304) interior chamber with corrosion-resistant construction and integrated waterproof observation window
• Programmable rainfall intensity (10–20 cm/h) via regulated flow control valves and calibrated orifice nozzles (standard Φ0.4 mm per IEC 60529 Annex B)
• Integrated axial fan system delivering laminar wind flow (5–18 m/s) with turbulence minimization for repeatable wind-rain coupling
• PLC-based control system with 7-inch industrial touchscreen HMI, supporting multi-step test programs, time-stamped event logging, and password-protected parameter locking
• Self-contained water recirculation loop with dual-stage filtration (mechanical pre-filter + 0.45 µm membrane), stainless steel reservoir, and auto-refill function
• Safety interlocks including door-open cutoff, low-water level alarm, pump overheat protection, and real-time flow monitoring

Sample Compatibility & Compliance

The LS-807 accommodates samples up to Ø600 mm diameter and 100 kg mass on its rotating turntable (1–5 rpm adjustable), ensuring representative exposure for enclosures used in automotive lighting, outdoor electrical cabinets, consumer electronics housings, and industrial sensors. It fully satisfies the mechanical and procedural requirements of IEC 60529 Clause 13.2.2 (oscillating pipe method for IPX3/IPX4), GB 4208 equivalent clauses, and ISO 20653:2013 for road vehicle protection codes. Optional calibration documentation includes traceable verification of nozzle flow rates (per ISO 5167 principles), droplet size distribution (via laser diffraction validation), and wind velocity profile mapping (using NIST-traceable hot-wire anemometry). The system is compatible with GLP-compliant audit trails when paired with OK’s optional data export module (CSV/Excel), meeting foundational requirements for regulated product validation under ISO/IEC 17025-accredited laboratories.

Software & Data Management

The embedded control firmware supports full-cycle programmability: users define test duration (0–999 min), oscillation frequency, wind-on/off timing, and temperature setpoints independently per phase. All operational parameters—including actual measured flow rate, chamber temperature, and elapsed test time—are logged at 1-second intervals and stored internally for ≥30 days. Data export is enabled via USB port (FAT32-formatted drive) in timestamped CSV format, retaining column headers compliant with ASTM E2911-21 metadata conventions. No cloud connectivity or proprietary software installation is required; however, OK provides optional Windows-compatible reporting utility (OK-RainLog v2.1) for automated PDF report generation—including pass/fail status per IP clause, annotated test logs, and operator signature fields aligned with 21 CFR Part 11 electronic record guidelines (audit trail, user authentication, and record retention settings available upon configuration).

Applications

This chamber serves as a primary validation tool for R&D and QA teams evaluating enclosure integrity under simulated precipitation. Key use cases include: functional assessment of LED streetlight housings subjected to tropical monsoon conditions; verification of ingress resistance in ADAS sensor housings prior to vehicle-level environmental testing; qualification of marine-grade instrumentation against salt-laden rain exposure; durability screening of solar inverter enclosures rated IP65/IP66; and comparative analysis of gasket materials under cyclic thermal–hydric stress (e.g., 40°C + 15 cm/h rain → 25°C dry recovery). Its wind-rain coupling capability further enables correlation studies between aerodynamic loading and water penetration pathways—critical for UAV chassis, railway signaling equipment, and telecom base station cabinets deployed in high-wind coastal zones.

FAQ

Does the LS-807 support IPX5 or IPX6 testing?
No—the LS-807 is purpose-built for oscillating pipe methodology per IPX3/IPX4. IPX5/IPX6 require pressurized jet testing per IEC 60529 Annex C and necessitate separate high-pressure pump systems, calibrated nozzles (Φ6.3 mm or Φ12.5 mm), and fixed-distance positioning. OK offers dedicated IPX5/X6 test rigs (e.g., OK-JET series) or modular hybrid chambers upon request.
What water quality specifications are required for reliable operation?
Deionized or softened water with conductivity ≤10 µS/cm and hardness <1°dH is mandatory. Unfiltered tap water causes rapid nozzle clogging and scaling in the pump head. The integrated 0.45 µm filter mitigates particulates but does not remove dissolved minerals.
Can test parameters be locked to prevent unauthorized modification during production runs?
Yes—administrator-level access enables parameter write-protection, HMI navigation restriction, and forced calibration interval alerts. Audit logs record all login attempts, setting changes, and emergency stops with UTC timestamps.
Is third-party calibration certification available?
OK provides optional factory calibration certificates (traceable to CNAS-accredited labs) covering flow rate accuracy (±2.5% of reading), temperature uniformity (±1.5°C across working volume), and angular position repeatability (±0.3°). On-site verification services are available globally.
How is compliance with IEC 60529 verified during installation?
OK performs on-site commissioning per IEC 61000-4-27 Annex A: verification includes nozzle alignment check, sweep angle measurement using digital protractor, flow rate validation per orifice count, and wind velocity profile mapping at sample location using calibrated anemometer. A signed IQ/OQ protocol is delivered with the system.