Model 608

Description

The ERICHSEN Corrosion Testing Instrument, Model 608 / 400-Basic, takes full advantage of our wide experience in the construction of all kinds of testing equipment as well as of the information and worldwide feedback received from users. Made of impact resistant, eco-friendly polypropylene material each instrument forms a closed unit. The Corrosion Test Apparatus, Model 608-Basic, consists of a test chamber of 400 l capacity, and a built-in control unit as well as an external storage tank for the spray solution. The external storage tank for approx. 200 l salt solution allows continuous testing without attention over a period of up to a week.

A dosing pump serves for an infinitely variable adjustment to achieve optimum consumption of spray solution. A circulation pump for mixing the salt solution in the storage tank is permanently installed in the lower part of the control unit. hecontrol cabinet 608 Basic is equipped with a PLC (programme logic control) SIEMENS D7 200.The test cycles as well as the test parameters are entered using the SIMATIC touch screen. Cyclic corrosion tests executed e.g. in accordance with the specification of VDA, VW or SWAAT, can be started in a user-friendly manner. By default, five programs for standard test sequences are provided. Program number 6 is available for customized programming.However, programs 1 to 5 can also be customized by the user to meet their specifications. After placing the specimens and the condensation receptacles in the test chamber, the test takes place fully automatically. The top of the test chamber dome is pneumatically opened and closed so that both hands can be used to lodge the specimens.

Purpose and application

Ferrous and non-ferrous metals are attacked continuously by humidity, acids, solutions, gases etc. It is therefore vitally important to choose the correct surface protection. There are many materials and qualities on the market and their properties must be properly assessed. Materials intended to prevent corrosion must be tested if failures are to be avoided. Furthermore the comparative quality control during production is of increasing importance. The best known processes employ spray vapour tests using various salt solutions as well as condensation water climates.

Test principle

Aggressive solutions are turned into a vapour mist in accordance with the tests that are listed below. These vapours surround the specimens in the test chamber either continuously or in a cyclic manner. The corrosion resistance of the inpidual specimens is established on the basis of the difference in time before the first corrosive effects become apparent.

Scope of delivery

• Corrosion Testing Apparatus, Model 608/400-Basic
• external storage tank
• 3 specimen holder
• condensate receptacles
• operating manual