Salt Spray Test Chamber Manufacturer

Overview

The Salt Spray Test Chamber is an environmental test system engineered for accelerated corrosion resistance evaluation of metallic and coated materials under controlled saline fog conditions. It operates on the principle of continuous or cyclic salt mist generation via Bernoulli-effect atomization—ensuring uniform droplet distribution without nozzle clogging or crystalline deposition. Designed to meet stringent international standard requirements—including ASTM B117, ISO 9227, JIS Z2371, DIN 50021, and CNS 1408—this chamber provides reproducible, traceable, and auditable test environments essential for quality assurance in automotive, aerospace, electronics, and marine component manufacturing.

Key Features

• Bernoulli-based salt solution atomization system: Eliminates nozzle blockage and ensures stable, long-duration fog generation with consistent droplet size distribution.
• High-precision glass nozzle assembly: Adjustable spray angle and flow rate (0.5–3.5 mL/80 cm²/h, averaged over 16 hours) to accommodate NSS (Neutral Salt Spray), AASS (Acetic Acid Salt Spray), and CASS (Copper-Accelerated Acetic Acid Salt Spray) test protocols.
• Pressurized air demisting system: Efficiently evacuates residual fog from the test chamber during recovery phases, preventing cross-contamination and protecting adjacent quality control areas.
• Water-jacketed heating system: Complies with CNS, JIS, and ASTM thermal specifications; delivers precise temperature regulation (±0.5 °C fluctuation) with low energy consumption and high thermal stability.
• Touchscreen LCD controller (TEMI-550): Integrated microprocessor with PID auto-tuning, real-time monitoring, and programmable logic for multi-step test sequences.
• Dual-stage air pressure regulation: First stage for coarse adjustment, second stage for fine-tuning (1 kg/cm² nominal supply), coupled with integrated particulate and oil/water filtration for clean, dry compressed air delivery.

Sample Compatibility & Compliance

This chamber accommodates specimens up to 900 × 500 × 600 mm (W×D×H) within its test volume, supporting flat panels, fasteners, electronic enclosures, and complex-shaped components. The internal stainless steel construction resists chloride-induced degradation, while the insulated outer casing minimizes ambient heat loss. All operational parameters—including chamber temperature (35–65 °C), relative humidity (60–95% RH), and temperature/humidity uniformity (±2.0 °C and ±5% RH respectively)—are validated per ISO/IEC 17025 calibration guidelines. The system supports full compliance documentation packages required for GLP/GMP audits and FDA 21 CFR Part 11–aligned data integrity workflows when paired with optional audit-trail-enabled software modules.

Software & Data Management

The TEMI-550 controller supports up to 99 steps × 120 patterns, enabling highly customizable test profiles—including partial-cycle execution (1–99 segments), total cycle repetition (0–999 cycles), and seamless power-failure recovery. Each segment allows independent time setting (0–99 hours), temperature/humidity targets, and spray activation logic. Backlight dimming and timeout settings enhance operator ergonomics in extended-shift environments. Optional PC-based data logging software provides CSV export, trend charting, alarm history, and timestamped event logs—all compliant with ISO 17025 record retention requirements. Remote monitoring via Ethernet or RS485 is available through OEM-integrated industrial communication protocols.

Applications

• Corrosion performance validation of electroplated, galvanized, and anodized surfaces.
• Quality conformance testing for automotive trim, brake calipers, and chassis components per OEM-specific standards (e.g., GMW14872, Ford CETP).
• Coating adhesion and blistering assessment under accelerated saline exposure.
• Comparative evaluation of anti-corrosion inhibitors and surface passivation treatments.
• Pre-shipment verification for marine-grade hardware, offshore instrumentation housings, and defense electronics.

FAQ

What standards does this chamber comply with?
ASTM B117, ISO 9227, JIS Z2371, DIN 50021, CNS 1408, and GB/T 10587.
Can it perform both NSS and CASS tests?
Yes—dual temperature setpoints (35 °C/47 °C for NSS; 50 °C/63 °C for CASS) and independent saturated air tank control enable seamless protocol switching.
Is the controller capable of power-loss recovery?
Yes—the system retains program state and resumes testing automatically after interruption.
What is the maximum specimen height supported?
The internal test space accommodates samples up to 600 mm in height, with optimized airflow distribution across the full volume.
Does it include air filtration for the spray system?
Yes—a two-stage compressed air filtration system removes particulates, oil, and moisture to prevent nozzle fouling and ensure consistent雾化 performance.