ISO 22479 Sulfur Dioxide Test Chamber for Humid Corrosion Testing
The 517 L Sulfur Dioxide Test Chamber is designed for controlled SO₂ corrosion testing of metals, coatings, electrical contacts, and plated components.
- Test Focus: Comparative corrosion evaluation under humid sulfur dioxide exposure
- Typical Samples: Coated panels, metal parts, connectors, terminals, fasteners, and plated components
- Typical Users: Manufacturers, testing laboratories, quality teams, and R&D departments
- Method Selection: Configured according to the applicable standard and exposure conditions
- Project Support: Gas control, sample arrangement, exhaust, and operating functions can be reviewed for each project
Sulfur Dioxide Test Chamber Product Overview
The Sulfur Dioxide Test Chamber combines a corrosion-resistant PP test space with measured SO₂ introduction, temperature conditioning, a water system and controlled chamber ventilation.
As a Sulfur Dioxide Corrosion Chamber, it uses PP, PTFE, titanium alloy and other acid-resistant materials in areas exposed to the corrosive atmosphere. This construction helps protect the chamber, gas path, heating element, temperature sensor and sealing components during repeated tests.
The equipment supports material selection, coating evaluation, component validation, product development and routine quality control. The final Sulfur Dioxide Test Chamber configuration should be selected according to the applicable standard, SO₂ condition, moisture method, exposure cycle, sample capacity and laboratory safety requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Internal Chamber Volume | 517 L |
| Temperature Range | RT+10°C to 50°C |
| Temperature Control Accuracy | ±1°C |
| Temperature Uniformity | ±2.0°C |
| Test Time | 0–999 h, adjustable |
| Nominal SO₂ Concentration | 1% by volume |
| Initial SO₂ Gas Volume | 5.17 L |
| Gas Replenishment | Every 24 hours under the stated configuration |
| Chamber Material | Corrosion-resistant PP |
| Door | 12 mm tempered glass |
| Heating Element | Titanium alloy electric heating tube |
| Temperature Sensor | Titanium alloy PT100 |
| Temperature Control | PID control |
| Controller Input / Output | PT100 × 1 dry-bulb signal / 4–20 mA output |
| Gas Measurement | Corrosion-resistant digital mass flow meter |
| Water System | Built-in PP water tank |
| Power Supply | AC 220 V, 2.5 kW, 50 Hz |
| Recommended Installation Space | At least 2200 × 2000 × 2200 mm, W × H × D |
Test Purpose and Exposure Principle
Sulfur dioxide can accelerate corrosion when it comes into contact with moisture on metal or coated surfaces. The Sulfur Dioxide Test Chamber establishes a controlled environment in which temperature, moisture, exposure time and SO₂ introduction can be regulated.
Evaluation may include rust formation, discoloration, blistering, coating deterioration, under-film corrosion, mass change, contact resistance or functional performance. Results should be assessed according to the applicable standard or customer procedure and should not be treated as a direct prediction of actual service life.
Applicable Standards and Method Compatibility
ISO 22479 Humid SO₂ Corrosion Testing
ISO 22479 specifies a fixed-gas method for evaluating metals, alloys, metallic coatings, non-organic coatings and organic coatings in a humid sulfur dioxide atmosphere.
Use of this Sulfur Dioxide Test Chamber should be confirmed against the required gas quantity, moisture condition, exposure cycle and specimen arrangement.
IEC 60068-2-42 SO2 Test Chamber
IEC 60068-2-42 applies to the corrosive effects of sulfur dioxide on electrical contacts and connections.
An IEC 60068-2-42 SO2 Test Chamber may require different concentrations, severities and post-test electrical measurements from the stated configuration.
DIN 50018 and Customer Procedures
Customers following DIN 50018, legacy drawings, national requirements or internal procedures should provide the exact standard edition and test conditions before configuration.
Corrosion-Resistant System Design
517 L PP Test Space
The 517 L Sulfur Dioxide Test Chamber uses corrosion-resistant PP material with thermal insulation. Sample placement should follow the applicable method.
Controlled SO₂ Introduction
The system uses a corrosion-resistant digital mass flow meter, controlled gas introduction, automatic shutoff and acid-resistant sealing components.
Temperature Conditioning
A titanium alloy heating tube, titanium alloy PT100 sensor and PID controller maintain the selected test temperature.
Water and Observation Systems
The PP water tank supports humid exposure, while the 12 mm tempered-glass door allows observation without opening the chamber.
Exhaust and Safety Configuration
The Sulfur Dioxide Test Chamber includes a 50 W exhaust fan, electric ball valve, exhaust pipe, filter assembly, water-shortage protection, alarm and protective electrical functions.
Typical Test Samples
The Sulfur Dioxide Test Chamber can be used for the following materials and components:
Different materials may influence one another during exposure. Specimen grouping should follow the applicable test method.
Typical Applications
Coating and Surface Treatment Evaluation
The Sulfur Dioxide Corrosion Chamber helps identify rust, discoloration, blistering, coating damage and under-film corrosion.
Electrical Contact and Connector Testing
Projects involving an IEC 60068-2-42 SO2 Test Chamber may require post-exposure electrical measurements.
Automotive Component Validation
Suitable for plated parts, brackets, fasteners, terminals, connectors and other surface-treated automotive components.
Laboratory and R&D Testing
The Sulfur Dioxide Test Chamber supports standard testing, material studies, product development and routine quality control.
Laboratory and Manufacturing Value
The Sulfur Dioxide Test Chamber integrates the main gas, temperature, water and ventilation functions required for controlled corrosion testing.
Configuration and Selection Notes
Before selecting a Sulfur Dioxide Test Chamber, confirm the applicable standard, exposure conditions, sample information, gas supply and laboratory installation requirements.
Standard and Exposure Conditions
- Applicable standard and edition
- SO₂ concentration or gas volume
- Test temperature and duration
- Moisture or condensation method
Sample Requirements
- Sample type and dimensions
- Quantity and weight
- Required orientation
- Specimen rack requirements
Gas and Exhaust Conditions
- SO₂ cylinder and gas purity
- Regulator and outlet pressure
- Laboratory exhaust system
- Neutralization requirements
Control and Installation
- Touchscreen and programmable cycles
- Temperature and flow recording
- Power supply requirements
- Ventilation and maintenance access
Compliance & Regulatory Assurance
The 517 L Sulfur Dioxide Test Chamber is designed to support humid SO₂ corrosion testing associated with ISO 22479 and customer-defined test procedures. Its corrosion-resistant PP chamber, controlled SO₂ introduction, temperature conditioning, water system and programmable exposure time support comparative corrosion evaluation of metals, coatings, electrical contacts and plated components. IEC 60068-2-42 applications should be reviewed separately because the required gas concentration and test severity may differ from the stated 1% SO₂ configuration.
Final compliance depends on the complete laboratory arrangement, including the applicable standard edition, SO₂ concentration or gas volume, moisture or condensation method, exposure cycle, specimen placement, gas replenishment, exhaust treatment and measurement verification. Temperature, time and gas-flow verification records, factory inspection documents, safety information and traceability documentation can be confirmed according to project requirements.
Download the technical catalogue for the ISO 22479 Sulfur Dioxide Test Chamber.
Technical Inquiry & Expert Support
To confirm whether the 517 L Sulfur Dioxide Test Chamber matches your project, please provide the information below when sending an inquiry. This helps KINGPO review the applicable standard, specimen type, SO₂ exposure conditions, laboratory installation and required documentation before quotation.
| Information Needed | Description |
|---|---|
| Applicable Standard | ISO 22479, IEC 60068-2-42, DIN 50018 or the relevant customer test procedure and applicable edition. |
| Specimen Information | Sample material, coating type, maximum dimensions, quantity, weight, orientation and required specimen spacing. |
| SO₂ Exposure Conditions | Required SO₂ concentration or gas volume, test temperature, exposure duration, moisture or condensation method, gas replenishment frequency and number of cycles. |
| Laboratory Installation | Power supply, SO₂ cylinder specification, gas purity, regulator, outlet pressure, exhaust connection, neutralization system and safety requirements. |
| Documentation Needs | Product datasheet, operation manual, calibration-related records, factory inspection report, gas-flow verification or traceability information if required. |
Note:
Final suitability should be reviewed together with the applicable standard edition, complete test procedure, specimen arrangement, gas conditions, laboratory exhaust system and local EHS requirements.
Sulfur Dioxide Test Chamber Detail Display
Sulfur Dioxide Test Chamber FAQ
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