Gebr. Liebisch GmbH测试模块

德国Gebr. Liebisch GmbH测试模块

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Corrosion testing units - general information

Modern controls of quality and corrosion research need test standards to detect the effect of corrosion on material and products. We know two important kinds of corrosion testing: the real time test in natural conditions the accelerated laboratory test The greatest advantage of the laboratory test in a corrosion testing chamber is, that the user gets a quick result of the corrosion of the test samples. The quick reaction is achieved by increasing the temperature and the concentration of the medium, used in the test.

	Desk type unit Cabinet type unit Chest type unit

	Liebisch corrosion testing units are designed and constructed especially for these tests. Most of the frequently used standards can be performed with these units. We would be pleased to send you information on this.

Standards Several types of test chambers are used to test samples to different corrosion conditions. Using temperature and humidity corrosion conditions are created in the test chamber. By adding aggressive test solution or pollution gas the effect can be intensified.

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 standards are applied.

Important standards 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. K400 M-SC    K400 M-TR   K1000 M-SC  K1000 M-TR  K2000 M-SC  K2500 M-TR

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 NaCl 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. S400 M/A-SC    S400 M/A-TR  S1000 M/A-SC S1000 M/A-TR S2000 M/A-SC  S2500 M/A-TR

	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. KB 300        KBEA 300

	Alternation test e.g. VDA 621-415 or VW PV1210     Different producers, associations and institutions have developed standards, which combined periods of condensation climate, salt spray, drying or ventilation. The purpose is to produce real environmental stress. SKB400 A-SC    SKB400 A-TR  SKB1000 A-SC SKB1000 A-TR SKB2000 A-SC  SKB2500 A-TR

Liebisch process systems
	The Liebisch test chambers are defined by a letter code, which is part of the process type description.

Process system S (salt spray) Process system K (condensed water) Process system B (ventilation) Using a two-component nozzle NaCl test solution is sprayed in the test chamber. Humidified compressed air - using demineralized water - sucks in the test solution from a constant 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 constant 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 conditions. The ventilation system is added to the salt spray / condensation water system.

	Well-defined operating systems are only available as combination with other systems or for definite unit types!

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 concentrations of gas volume are dosed into the test chamber. This system is available only for KBG 400 / 1000 A-SC.

	The systems warm air (W), humidity (F) and gas (G) extend the functions of condensation water and salt spray units. They cannot operate individually!

		The Liebisch letter code

Desk type units

	Liebisch desk type units are supplied with 300 litre test chamber volume. They are used for condensation water tests with or without pollution gas (e.g. DIN EN ISO 6270-2, DIN 50018). Options are available to meet customer test requirements. Accessories / options Functional diagram KB 300

Constanzo®   These units are available with or without automatic ventilation. With the automatic ventilation the user needn’t open the test chamber door during ventilation periods. Ambient air passes through the test chamber. The test chamber temperature range is max. 50°C, the increased operating temperature system (EA) allows a temperature of up to 60°C. K300 Desk type unit without automatic ventilation.  KB300 Desk type unit with automatic ventilation KEA300 Desk type unit without automatic ventilation and increased operating temperature. KBEA300 Desk type unit with automatic ventilation and increased operating temperature.

Desk type units

	Liebisch desk type units are supplied with 300 litre test chamber volume. They are used for condensation water tests with or without pollution gas (e.g. DIN EN ISO 6270-2, DIN 50018). Options are available to meet customer test requirements. Accessories / options Functional diagram KB 300

Constanzo®
These units are available with or without automatic ventilation. With the automatic ventilation the user needn’t open the test chamber door during ventilation periods. Ambient air passes through the test chamber. The test chamber temperature range is max. 50°C, the increased operating temperature system (EA) allows a temperature of up to 60°C.	K300 Desk type unit without automatic ventilation.  KB300 Desk type unit with automatic ventilation KEA300 Desk type unit without automatic ventilation and increased operating temperature. KBEA300 Desk type unit with automatic ventilation and increased operating temperature.

	For performing corrosion tests with Sulphur dioxide (e.g. DIN 50018 or DIN EN ISO 6988) we recommend our Gasomat gas dosing system.

	Gasomat With this unit the required volume of gas is dosed into the test chamber. This manually operated accessory doses gas accuratery via a replacement fluid system. Gas is supplied from a several gas cylinder.
KB 300 with Gasomat and SO2 -  small steel bottle

Cabinet type units

	Liebisch cabinet type units are available in 400, 1000 and 2000 litre test chamber sizes. The user’s application decides which process system(s) will be installed. Here you can read details about the individual systems. Accessories / options, documentation software CorroControl Animation process system for salt spray SKBWF 2000 A-SC

Constacon® SC This series are manually operated cabinets of type M-SC for performing of condensation water tests such as DIN EN ISO 6270-2 (without pollution gas). K400 M-SC K1000 M-SC K2000 M-SC Cabinet type units with 400/1000/2000 litres test chamber volume without ventilation. KB400 M-SC KB1000 M-SC KB2000 M-SC Cabinet type units with 400/1000/2000 litres test chamber volume with ventilation.     Constasal® SC This series are manually operated cabinets of type M-SC for performing of salt spray tests such as DIN EN ISO 9227. S400 M-SC S1000 M-SC S2000 M-SC Cabinet type units with 400/1000/2000 litres test chamber volume without ventilation. Chest type units     Liebisch chest type units are available in 400, 1000 and 2500 litre test chamber volume design. The user’s application decides which process system(s) will be installed. Here you can read details about the individual systems. Accessories / options, documentation software CorroControl Animation process system for salt spray SKB 400 A-TR       Constacon® TR This series are manually operated chests of type M-TR for performing of condensation water tests such as DIN EN ISO 6270-2 (without pollution gas). K400 M-TR K1000 M-TR K2500 M-TR Chest type units with 400/1000/2500 litres test chamber volume without ventilation.     Constasal® TR This series are manually operated chests of type M- TR to perform salt spray tests such as DIN EN ISO 9227 without automatic ventilation. S400 M-TR S1000 M-TR S2500 M-TR Chest type units with 400/1000/2500 litres test chamber volume for performing salt spray tests.     Constatwin® TR This series are manually operated chests of type M- TR to perform salt spray tests or condensation water tests. They are called “manually operated combination testers”. SK400 M-TR SK1000 M-TR SK2500 M-TR Chest type units with 400/1000/2500 litres test chamber volume for performing salt spray or condensation water tests. Special units    S400 M-TR special design Flexibility design Liebisch realizes that customers will need special modifications to standard models to meet their test requirements. For most of your individual requirements our technical engineers will find economical answers  Examples: modified door, lid and handle designs individually designed sample holders, adaptation of the drain systems to suit architectural conditions special cable ports   This modified model of a 400 litre salt spray chest is equipped with a transparent lid. A mechanical lifting device moves the lid vertically. With this the user can load the test room from two sides and observe the samples on all sides. Additionally the test room volume increases to 600 litres.   Constamatic® G   The KBG400A-SC was specially developed for condensation water tests with Sulphur dioxide. The most excellent feature of this unit with 400 litre test chamber volume is the automatic gas dosing system. With this system the control and the test programmer is fully automatic. At start of the test the required gas volume is introduced through a calibrated dosing system into the chamber. With this unit you can perform long-term tests e.g. according to DIN 50018 without any operator interventions. For safe storage the Sulphur dioxide mini steel cylinder is located in a separate, lockable and automatically ventilated area. Alternativ system: Constanzo KBG 400 A-SC   Dippomat     This patented chest type unit was developed for performing alternate immersion tests in a condensation water climate (DIN EN 3212). The samples have to be immersed alternately into a buffered NaCl solution and then exposed to the condensation water atmosphere. Dippomat In the test chamber the unit has three independently programmable drive shafts on which are attached the sample mounting systems. The complete dippings mechanics consist of high-quality plastic material and excludes any reaction with the specimen. Bottom plate and shaft are easy to dismantle and ensure easy cleaning of the test chamber.     Constamatic® TR This series are programmable and operate the A-TR range of chests. The unit’s easy to use programmer is mounted in the control panel. All functions are displayed on a multi-line menu-driven display. The units can be equipped with systems for salt spray or built as combination testing unit. S400 A-TR  S1000 A-TR S2500 A-TR Chest type units with 400/1000/2500 litres test chamber volume for salt spray tests. SKB400 A-TR SKB1000 A-TR SKB2500 A-TR Chest type units with 400/1000/2500 litres test chamber volume for combination tests with automatic ventilation. SKBW400 A-TR SKBW1000 A-TR SKBW2500 A-TR Chest type units with 400/1000/2500 litres test chamber volume for combination tests with automatic ventilation and warm air SKBWF1000 A-TR SKBWF2500 A-TR Chest type units with 1000/2500 litres test chamber volume for combination tests with automatic ventilation, warm air and controlled rel. humidity. Accessories / options for corrosion testing chambers (essence)  Article   Compressor incl. automatic drainage system Sound-dampened, dry-running compressor to supply one test chamber. By using such a compressor an air service kit (s. below) is not necessary.       Order No. 1100 0022     Air service kit High capacity filter with pressure controller and manometer to remove air from oil, water and other dirt from the compressed air.   Order No. 1100 0009   Dosing pump for test solution Programmable precision dosing pump for NaCl test solution, for accurate, pulse-free precision spraying of the test solution in the test chamber. Only available for automatic units A-SC and A-TR!       Order No.1000 0060     Dosing pump for test solution Specification as above, only for manual units M-SC and M-TR! Order No.1000 0061     Deioniser 2000 Pressure-proof deioniser. Two cartridge system complete with water pipework system and conductivity meter. Capacity approx. 2000 litres.    Order No. 1100 0019     Deioniser 4500 Specifications as above, capacity 4500 litres, recommended for units with test chamber volume from 1000 litre. Order No.1100 0025   Gas dosing unit Gasomat 2000 Full plastic design for manual dosing of SO2 from pressure bottles for gas quantities of 200 - 2000 ml. The unit is provided for use with desk type units K...300 (series Constanzo® ). Picture here with accessories!   Order No. 1100 0003   Gas dosing unit Gasomat 200 Specifications as above, for gas quantities 50 - 200 ml. Order No. 1100 0004     Pressure reducer for Sulphur dioxide with primary and secondary pressure gauge (adjustable).   Order No.1100 0010     Round mixing/storage vessel with lid For the preparation and storage of NaCl test solution,  volume: approx. 200 l, seamless plastic construction (NPE nature). (Picture here with Undercarriage, Order No. 1100 0031)   Order No. 1100 0030     Drum pump Top entry centrifugal pump for filling and mixing of liquids. Maximum immersed lenght: 650 mm.   Order No. 1100 0011

Constamatic® SC This series are programmable and operate the A-SC range of cabinets. The unit’s easy to use programmer is mount in the control panel. All functions are displayed on a multi-line menu-driven display. The units can be equipped with systems for salt spray or built as combination testing units.       S400 A-SC  S1000 A-SC S2000 A-SC Cabinet type units with 400/1000/2000 litres test chamber volume for salt spray tests. SKB400 A-SC SKB1000 A-SC SKB2000 A-SC Cabinet type units with 400/1000/2000 litres test chamber volume for combination tests with automatic ventilation. SKBW1000 A-SC SKBW2000 A-SC Cabinet type units with 400/1000/2000 litres test chamber volume for combination tests with automatic ventilation and warm air. SKBWF1000 A-SC SKBWF2000 A-SC Cabinet type units with 400/1000/2000 litres test chamber volume for combination tests with automatic ventilation, warm air and controlled rel. humidity.