Yiheng LYW Series Salt Spray Test Chamber
| Brand | Yiheng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | LYW Series |
| Salt Fog Deposition Rate | 1.0–2.0 mL / 80 cm²·h |
| Temperature Range | RT+5°C to 50°C |
Overview
The Yiheng LYW Series Salt Spray Test Chamber is an engineered environmental test system designed for standardized accelerated corrosion testing of metallic and coated materials in accordance with internationally recognized test methods—including ASTM B117, ISO 9227, JIS Z2243, and GB/T 2423.17. It operates on the principle of continuous or cyclic atomization of a precisely formulated sodium chloride (NaCl) solution into a controlled, saturated humid environment maintained at a stable temperature. This enables reproducible simulation of aggressive saline atmospheric conditions, facilitating quantitative assessment of coating integrity, galvanic protection performance, and base metal corrosion resistance over defined exposure durations.
Key Features
- Monolithic molded chamber body constructed from high-grade PVC or fiber-reinforced plastic (FRP), offering exceptional resistance to acid–alkali corrosion, mechanical shock, and long-term structural deformation.
- Tower-type pneumatic spray system with adjustable nozzle configuration ensures uniform fog distribution across the test volume; deposition rate is independently calibrated and verifiable per ASTM B117 requirements (1.0–2.0 mL/80 cm²·h).
- Two lid options available: transparent PVC for real-time visual monitoring of specimen condition and spray dynamics, or FRP for enhanced thermal stability and UV resistance in extended testing protocols.
- Water-sealed chamber design eliminates salt fog leakage—critical for laboratory safety, cross-contamination prevention, and compliance with ISO/IEC 17025 facility requirements.
- Front-access side door with lockable hinge mechanism provides unobstructed access to control panel, heaters, and fluid reservoirs; all electrical components are mounted on service-friendly DIN rails with clear labeling.
- Dual-stage thermal protection: electronic PID controller with ±0.1°C resolution + independent mechanical high-limit thermostat; all heating elements incorporate redundant overheat cutoffs.
- Integrated circuit protection includes residual-current device (RCD), thermal-magnetic circuit breakers, low-water-level detection, and audible/visual alarms for short-circuit, dry-run, and temperature deviation events.
Sample Compatibility & Compliance
The LYW chamber accommodates standard test specimens up to 600 mm × 450 mm × 400 mm (W×D×H), supporting rack-mounted coupons, fasteners, automotive trim parts, printed circuit boards (PCBs), and electroplated hardware. Its operational envelope complies with the environmental conditioning stipulations of ASTM B117 (neutral salt spray), ASTM G85 Annex A5 (acidified salt fog), and ISO 9227 cyclic corrosion testing when paired with optional humidity and drying modules. All internal wetted surfaces meet RoHS-compliant material specifications, and the chamber’s construction supports GLP-aligned documentation practices—including audit-ready calibration logs and traceable sensor verification.
Software & Data Management
While the base LYW model utilizes a microprocessor-based P.I.D. temperature controller with digital display and programmable timer (0–999 hr), export-configured units (designated “N” variant) integrate Omron HMI controllers compliant with IEC 61131-3 logic architecture. These support data logging via RS-485 Modbus RTU protocol, enabling integration with centralized LIMS or MES platforms. Optional USB data export allows timestamped storage of temperature profiles, spray activation cycles, and alarm history—fully traceable for FDA 21 CFR Part 11–aligned environments when deployed with validated electronic signatures and audit trail firmware.
Applications
- Quality assurance of zinc-, nickel-, chromium-, and epoxy-coated steel components in automotive, aerospace, and marine supply chains.
- Validation of passivation efficacy on stainless steel medical devices per ASTM A967 and ISO 10993-15.
- Comparative evaluation of organic coatings (e.g., powder coats, PVDF, polyurethane) under standardized corrosive stress.
- R&D screening of new alloy formulations, including aluminum-magnesium composites and duplex stainless steels.
- Third-party certification testing for ISO/TS 16949, IATF 16949, and MIL-STD-810G Method 509.2 compliance.
FAQ
What standards does the LYW Series comply with?
It meets core requirements of ASTM B117, ISO 9227, JIS Z2243, and GB/T 2423.17 for neutral salt spray testing. Optional configurations support modified salt fog protocols per ASTM G85 Annexes.
Is calibration documentation provided with shipment?
Yes—each unit ships with a factory calibration certificate for temperature sensor and spray deposition verification, traceable to national metrology institutes.
Can the chamber operate unattended for 72+ hours?
Yes, with integrated safety interlocks, low-water auto-shutdown, and dual thermal cutoffs—enabling fully automated long-duration tests under monitored lab conditions.
What maintenance intervals are recommended?
Weekly inspection of nozzles and saturator water level; quarterly verification of temperature uniformity (±2°C across working volume) and deposition rate per ASTM B117 Section 7.3.
Is remote monitoring supported?
Standard models include analog output (4–20 mA) for temperature; “N”-series units support Modbus RTU for SCADA integration and cloud-based dashboard visualization via optional gateway modules.
