SSC-010/ SSC-016/ SSC-020
LIB Industry
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The Salt Spray and Sulfur Dioxide Climatic Chamber features large testing capacities ranging from 780 L to 1800 L, making it suitable for testing automotive assemblies, electronic enclosures, connectors, fasteners, coatings, cable components, and industrial hardware. The chamber body is manufactured from high-strength 316 Stainless Steel, providing excellent corrosion resistance and long service life under continuous exposure to salt and acidic gases. A programmable color touch-screen controller supports automatic test sequences, data recording, Ethernet communication, USB export, and remote monitoring. The pneumatic sealing structure effectively prevents leakage of salt fog and sulfur dioxide gas while ensuring safe operation. An optimized air circulation system and precision spray tower design provide uniform distribution of corrosive media throughout the workspace, ensuring consistent testing conditions for all specimens.
Working Principle of the Salt Spray and Sulfur Dioxide Climatic Chamber
1. Combined Salt Fog and Sulfur Dioxide Corrosion Simulation: Unlike conventional salt spray chambers, this system introduces sulfur dioxide gas into the test environment while maintaining controlled salt fog deposition. The combination of chloride attack and acidic atmospheric conditions accelerates corrosion mechanisms commonly encountered in coastal, industrial, and polluted urban environments.
2. Precise Temperature and Humidity Regulation: The chamber maintains stable environmental conditions through PID-controlled heating, humidification, and refrigeration systems. Temperature can be controlled from +10°C to +90°C, while humidity can be adjusted between 30% RH and 98% RH. This flexibility allows users to reproduce various climatic conditions that influence corrosion rates.
3. Uniform Salt Fog Distribution: A quartz glass nozzle and adjustable spray tower generate fine salt particles that settle naturally onto specimen surfaces. Salt fog collection rates are maintained at 1–2 ml/80 cm²·h, meeting international testing requirements and ensuring repeatable exposure conditions.
4. Accurate SO₂ Gas Control: The chamber continuously controls and monitors sulfur dioxide concentration throughout the testing cycle. Integrated gas management systems help maintain stable test conditions while ensuring operator safety and compliance with corrosion testing standards.
5. Durable Construction and Long-Term Reliability: The testing chamber utilizes corrosion-resistant glass fiber reinforced plastic construction, stainless steel humidification components, and industrial-grade refrigeration systems. These materials provide excellent resistance to aggressive salt and acidic environments, ensuring long-term operational stability.
6. Comprehensive Safety Protection: Multiple safety functions are integrated into the system, including over-temperature protection, humidifier dry-burn protection, water shortage alarms, over-current protection, leakage protection, and emergency safety monitoring. An NaOH neutralization system helps safely treat exhaust sulfur dioxide gas before discharge.
Equipment Specifications
Model | SSC-010 | SSC-016 | SSC-020 | |
Internal dimensions (mm) | 800*1450*680 | 1000*1600*800 | 1000*2000*900 | |
Overall dimensions (mm) | 1400*2500*1720 | 1600*2650*1840 | 1600*3050*1940 | |
Interior Volume (L) | 780 | 1280 | 1800 | |
Temperature Range | +10 ℃ ～ +90 ℃ | |||
Temperature Fluctuation | ± 0.5 ℃ | |||
Temperature Deviation | ± 2.0 ℃ | |||
Humidity Range | 30% ~ 98% RH | |||
Humidity Deviation | + 2%, - 3% | |||
Salt Fog Deposition | 1～2ml / 80cm2 · h | |||
SO2 Gas Control | Control and display volume of SO2 gas | |||
Cooling | Cooling system | Mechanical compression refrigeration system | ||
Refrigerating unit | French TECUMSEH compressor | |||
Refrigerant | R404A | |||
Heating Element | Nichrome heater | |||
Humidity | Humidifier | External isolation, stainless steel surface evaporation humidifier | ||
Water Supply System | Water purification system | |||
Air Preheating | Saturated air barrel (31Liter) | |||
Spraying System | Atomizer tower and Spray nozzles | |||
Salt Fog Collected | Fog collector and fog measure cylinder | |||
Sealing | Pneumatic seal | |||
Controller | Programmable color LCD touch screen controller, Ethernet connection, PC Link, USB | |||
Ethernet connection, PC Link | ||||
Sensor | Temperature Sensor | PT100Ω / MV A-class | ||
Humidity Sensor | Dry and wet bulb sensor | |||
External Water Solution Tank(mm) | 340*230*230(18L) | |||
View Window Size(mm) | 800*300 | |||
Air Circulation | Centrifugal wind fan | |||
SO2 Exhaust Device | NAOH tank | |||
Safety Device | Humidifier Dry-combustion Protection; Over-temperature Protection; Over-current Protection; Water Shortage Protection; Earth leakage Protection | |||
Tests and Test Standards
Typical test conditions include 35°C neutral salt spray exposure for 240, 480, 720, or even 1000 hours depending on durability requirements. In the electronics industry, IEC 60068-2-11 and IEC 60068-2-42 are frequently used to assess corrosion performance of PCB assemblies, electrical connectors, switches, terminals, and communication devices. Sulfur dioxide concentrations may be maintained under controlled conditions for several corrosion cycles to simulate industrial pollution environments. For coatings and surface treatments, ASTM B117, ISO 6988, and DIN 50018 are commonly used to evaluate paint systems, anodized layers, zinc plating, nickel plating, powder coatings, and protective finishes. Typical evaluations include blistering, rust formation, coating delamination, discoloration, and substrate attack after exposure periods ranging from 24 hours to 2000 hours. The equipment is also suitable for testing cable accessories, lighting products, outdoor electrical enclosures, photovoltaic components, and marine equipment exposed to salt-laden and sulfur-containing atmospheres.
Video of the Salt Spray and Sulfur Dioxide Climatic Chamber
FAQs on the Salt Spray and Sulfur Dioxide Climatic Chamber
Q1: Can the chamber perform both salt spray and sulfur dioxide tests separately?
Yes. The chamber can operate in salt spray mode, sulfur dioxide mode, or combined salt spray and SO₂ corrosion mode. Users can program different test sequences according to applicable standards and product requirements.
Q2: Can sulfur dioxide concentration be monitored and controlled automatically?
Yes. The chamber includes a dedicated SO₂ gas control system that allows monitoring and regulation of sulfur dioxide volume throughout the test cycle, ensuring stable and repeatable testing conditions.
Q3: How is sulfur dioxide gas safely handled during testing?
The Salt Spray and Sulfur Dioxide Climatic Chamber is equipped with a dedicated SO₂ gas control and exhaust treatment system. During testing, sulfur dioxide concentration is precisely regulated to meet the requirements of applicable standards. After the test cycle, residual gas is directed through an NaOH neutralization system before discharge, helping ensure safe operation, environmental compliance, and protection for laboratory personnel.
