English Product Name

Overview

The OK-SH Series Salt Spray Environmental Test Chamber is a precision-engineered laboratory instrument designed to simulate aggressive corrosive environments for accelerated evaluation of material and coating durability. It operates on the principle of controlled salt fog generation—using compressed air atomization of a standardized sodium chloride (NaCl) solution—to replicate coastal, industrial, or de-icing salt exposure conditions. As a core component of the “Three Protection” (Moisture-Heat, Salt Spray, Mold) environmental test suite, this chamber supports compliance-driven reliability validation in aerospace, automotive, marine, electronics, and defense sectors. Its design adheres to internationally recognized test standards including ASTM B117, ISO 9227, JIS Z2243, and GB/T 2423.17, enabling reproducible, auditable corrosion testing under GLP- and GMP-aligned operational protocols.

Key Features

• Intelligent digital PID temperature controller with multi-stage tuning algorithms and fuzzy logic compensation, ensuring stable thermal regulation within ±0.5°C fluctuation and ≤±2°C uniformity across the working chamber.
• Tower-type spray system integrated with non-crystallizing ceramic nozzles—eliminating salt residue buildup and maintaining consistent deposition rates of 1–2 mL/80 cm²·h over extended test cycles.
• Dual-pressure regulation circuit and independent overtemperature protection safeguard both operator safety and specimen integrity during prolonged operation.
• Transparent polycarbonate observation lid enables real-time visual monitoring of spray distribution, droplet formation, and sample surface response without interrupting test conditions.
• Modular salt solution delivery path includes inline water filtration, temperature-matched preheating (to match chamber setpoint), and calibrated collection via standard funnels and volumetric cylinders—ensuring traceable, metrologically sound deposition quantification.
• Programmable timer with flexible unit selection (seconds, minutes, hours) supports both continuous and cyclic test profiles, facilitating multi-phase corrosion protocols per ISO 14993 or ASTM G85 Annex A5.

Sample Compatibility & Compliance

The OK-SH chamber accommodates a wide range of metallic substrates, electroplated components, painted panels, printed circuit boards, fasteners, and polymer-coated assemblies. Internal dimensions (up to 750×1100×500 mm) allow full-size automotive trim parts or military-grade enclosures to be evaluated without disassembly. All models comply with regulatory documentation requirements for audit readiness: built-in logging of setpoints, actual temperatures, spray activation timestamps, and runtime data supports 21 CFR Part 11–compatible electronic records when interfaced with validated LIMS or ELN platforms. Chamber construction meets IEC 61000-6-3 EMC immunity standards and incorporates grounding provisions aligned with ISO/IEC 17025 calibration infrastructure requirements.

Software & Data Management

While the base configuration employs a standalone LED-based PID controller, optional RS485/Modbus RTU or Ethernet TCP/IP interfaces enable integration with centralized test management systems. Logged parameters—including chamber temperature, elapsed time, spray status, and fault codes—are timestamped and exportable as CSV files for statistical process control (SPC) analysis. When deployed in regulated environments, optional firmware upgrades support audit trail generation, user access levels (admin/operator), and electronic signature capture—fully satisfying FDA 21 CFR Part 11 and EU Annex 11 expectations for data integrity.

Applications

• Accelerated corrosion resistance validation of zinc-nickel, chromate, and epoxy-polyester coatings per ISO 1461 and ASTM A153.
• Qualification of electronic connectors and PCB conformal coatings under mixed-flowing-gas (MFG) + salt fog stress sequences.
• Comparative lifetime modeling of stainless steel grades (e.g., 304 vs. 316) in simulated marine atmospheres.
• Verification of sealing integrity for IP67-rated housings using combined humidity-salt spray exposure per IEC 60529.
• Supporting failure mode analysis (FMEA) in automotive Tier-1 supplier PPAP submissions requiring GMW14872 or Ford CETP 00.00-L-467 compliance.

FAQ

What standards does the OK-SH chamber comply with?

It is engineered to meet ASTM B117, ISO 9227, JIS Z2243, and GB/T 2423.17 for neutral salt spray testing. Optional configurations support acetic acid salt spray (AASS) and copper-accelerated acetic acid salt spray (CASS) per ASTM G85 Annexes A1 and A3.

Can the chamber operate unattended for extended periods?

Yes—the programmable timer, dual overtemperature cutoffs, and fail-safe spray shutoff ensure safe 72+ hour continuous operation without manual intervention.

Is salt solution temperature control mandatory?

Preheating the salt solution to match chamber temperature is critical to prevent thermal shock and condensation artifacts; the OK-SH series maintains solution equilibrium via integrated thermal coupling.

How is spray deposition rate verified?

Using the supplied standardized funnels and graduated cylinders, users collect and measure deposited volume over 80 cm² surface area—validated against ASTM B117’s 1–2 mL/80 cm²·h specification.

Does the chamber support GLP-compliant data archiving?

With optional communication modules and validated software, it generates tamper-evident logs with user authentication, version-controlled settings, and electronic signatures—fully traceable for regulatory audits.