德国Gebr. Liebisch GmbH测试模块

Desk type unit

Cabinet type unit

Chest type unit

The most important tests are salt spray tests, condensation water tests and pollution gas tests with high humidity. The methods are performed individually or combined. Different national and international norms and standa*** are applied.

Important standa***

Possible units

Condensation water test DIN EN ISO 6270-2 (old DIN 50017) 

Condensed water is generated on the test samples at a test chamber temperature of 40°C. Demineralized water is loaded into the chamber and heated for evaporating. The relative humidity is appr. 100%. Periods of high humidity can be combined with periods of ventilation or cooling down.

Salt spray test DIN EN ISO 9227 (old DIN 50021)

This standard describes the spraying of a salt solution in the chamber at 35°C or 50°C. Acetic acid or copper chloride can be added to the N*** solution to accelerate the reaction. The fine salt fog condenses on the test samples and initiates corrosion.A salt spray chamber according to DIN EN ISO 9227 is supplied with a minimum volume of 400 litres.

Pollution gas test DIN 50018 / DIN EN ISO 6988

This standard is a special condensation test with the addition of sulphur dioxide. It is dosed into the test chamber at the beginning of the test.The gas combines with the demineralized water to sulphurous acid.The contaminated condensate causes a chemical reaction which is similar to the acid rain.

Alternation test e.g. VDA 621-415 or VW PV1210  

Different producers, associati*** and instituti*** h***e developed standa***, which combined periods of condensation climate, salt spray, drying or ventilation. The purpose is to produce real environmental stress.

Process system S (salt spray)

Process system K (condensed water)

Process system B (ventilation)

Using a two-component nozzle N*** test solution is sprayed in the test chamber. Humidified compressed air - using demineralized water - sucks in the test solution from a c***tant level vessel. The fine salt fog is distributed evenly in the chamber. Parts of the system:

• indirectly heated test chamber with electronical temperature control
• one or more two-component nozzle(s)
• supply tank for test solution
• c***tant level vessel for test solution supply (alternative: dosing pump)
• humidifier system with automatic water refill

For the condensation water test demineralized water is filled in the bottom of the chamber. The bottom is heated indirectly, the water evaporates. Parts of the system:

• indirectly heated test chamber with electronic temperature control
• system for water refill.                 

The process system “ventilation” is used for ventilating, drying and cooling down of the test chamber and test samples. Ambient air passes through the chamber by a fan. The test room temperature decreases to ambient and the rel. humidity is reduced to ambient conditi***. The ventilation system is added to the salt spray / condensation water system. 

Process system W (warm air)

Process system F (humidity)

Process system G (gas)

The warm air system is used for heating and fast drying of the test chamber and samples. It operates only in combination with process system “B” (ventilation). The difference to this system is that the ambient air is heated. The temperature can be controlled up to 60°C. You need this system for special combined tests such as Nissan CCT 1 or ASTM Prohesion.

The process system “F” is used to control the rel. humidity in the test chamber. This system can only operate in combination with the systems ventilation (B) and warm air (W). You can control RH between 30% and 100% for temperature range between ambient and 50°C.

The gas process system is used for automatically dosing a defined volume of pollution gas (Sulphur dioxide). To start the test individual concentrati*** of gas volume are dosed into the test chamber. This system is ***ailable only for KBG 400 / 1000