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Noxious gas
corrosion

Environmental simulation
Test procedure

During corrosion tests, products and their components are exposed to corrosive environmental conditions.



From a technical point of view, corrosion describes the reaction of a material with its surroundings. Additionally to the optical defects on a final product, corrosion can affect the function of a component or the whole system.

The noxious gas test takes a special role in the corrosive test procedures and comlements the widely established tests like salt fog.

The increasing industrialization leads to strongly increased noxious gas portions in the surroundings. As a direct consequence, day-to-day products are exposed to these gases and need to be protected.

Even the so called energy revolution in Germany brings new challenges to the manufacturers in the field of corrosion protection.

The massive subvention of PV-modules has lead acriculture businesses to fit solar panels onto their roofs. The very specific gases appearing in these industries, e.g. ammonia, lead to heavy corrosive effects on the modules themselves as well as on their attachments.

TechnoLab has noticed this fact very early and is one of a few laboratories offering appropriate tests.

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Equipment

Temperature range: +20 °C up to +70 °C
Test chamber size: up to 4.800 liter
various gases such as:
  • nitrogen dioxid (NO2)
  • sulfur dioxid (SO2)
  • chlorine (Cl2)
  • hydrogen sulfide (H2S)
  • ammonia (NH3)
  • ozone (O3)
  • cyclic temperature and humidity regulation
  • flowing gases
  • still gases
  • circulation
  • various flow velocities
  • various gas concentrations / compositions
noxious gas
Standards

  • ASTM D1149 Standard Test Methods for Rubber Deterioration - Cracking in an Ozone Controlled Environment
  • BMW GS 95003 BMW Electrical/Electronic Assemblies, Motor vehicles
  • DIN 50018 Testing in a saturated atmosphere in the presence of sulfur dioxide
  • DIN EN ISO 3231 Paints and varnishes - Determination of resistance to humid atmospheres containing sulfur dioxide
  • DIN EN ISO 6988 Metallic and other non-organic coatings - Sulfur dioxide test with general condensation of moisture
  • DIN V 40046-36 Environmental testing - Part 36: Tests - Test Kx: Sulphur dioxide low concentration for contacts and connections
  • DIN V 40046-37 Environmental testing - Part 37: Tests - Test Ky: Hydrogen sulphide low concentration for contacts and connections
  • ETSI EN 300 019-1-3 Environmental Engineering (EE); Environmental conditions and environmental tests for telecommunications equipment; Part 1-3: Classification of environmental conditions; Stationary use at weatherprotected locations
  • IEC 60068-2-42 Environmental testing - Part 2-42: Tests - Test Kc: Sulphur dioxide test for contacts and connections
  • IEC 60068-2-49 Electrical engineering; basic environmental testing procedures; guidance to test Kc: sulphur dioxide SO₂ (high concentration) for electrical contacts and connections
  • IEC 60068-2-60 (Method 1-4) Environmental testing - Part 2-60: Tests - Test Ke: Flowing mixed gas corrosion test
  • IEC 60512-11-7 Connectors for electronic equipment - Tests and measurements - Part 11-7: Climatic tests - Test 11g: Flowing mixed gas corrosion test
  • IEC 61300-2-28 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures - Part 2-28: Tests - Corrosive atmosphere (sulphur dioxide)
  • IEC 62716 (82/722/CDV) Photovoltaic (PV) modules - Ammonia corrosion testing
  • ISO 1431 Rubber, vulcanized or thermoplastic - Resistance to ozone cracking - Part 1: Static and dynamic strain testing
  • ISO 10960 Rubber and plastics hoses - Assessment of ozone resistance under dynamic conditions
  • ISO 16750-4 Road vehicles - Environmental conditions and testing for electrical and electronic equipment - Part 4: Climatic loads
  • JDQ 53.3 John Deere - Environmental Design and Testing of Electronic/Electrical Components and Assemblies
  • NEMA 250 Enclosures for Electrical Equipment (1000 Volts Maximum)
  • TSM 0508G Sulfur Resistance
  • UL 50 Standard for Enclosures for Electrical Equipment
  • UL 1332-7 Organic Coatings for Steel Enclosures for Outdoor Use Electrical Equipment
  • VW 80000
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