Canin Corrosion Analysing Instruments
Canin Corrosion Analysing Instruments
Keywords: Mastrad, Corrosion, Non-destructive testing,Concrete
Canin Corrosion Analysing Instruments are used for non-destructive testing of corrosion in the rebars of concrete building elements. They reportedly can detect corrosion before it becomes visible. The instrument is also said to make it possible to make a large area assessment of corrosion directly displayed on an indicator. Canin claims to set new standards in the sphere of building structure examination.
Canin is said to render it possible to make a large area assessment directly on the display of an indicator.
The manufactures believe that the instrument sets new standards in the sphere of building structure examination. According to Mastrad, the large display, just nine keys for simple operation using menu technique and the intelligent memory,render Canin a novel instrument.
A total of 240 measurement values are represented on the easily legible display in grey levels. 120,000 measurements can reportedly be stored in the intelligent memory and called up with the cursor keys as measuring fields of 240 measurement values. It is also stated that a measuring surface of more than 4,000m2 can be managed with the large memory.
The corrosion of steel in concrete is an electrochemical process. It represents a galvanic element similar to a battery – producing an electric current, measurable as an electric field on the surface of the concrete. This potential field can be measured with an electrode known as a halfcell. By making measurements over the whole surface, a distinction can be made between corroding and non corroding locations. There are many scientific studies describing this method which has been known in the USA for more than 30 years. These form the basis for the successful practical application.
In Switzerland, the institute of Building Materials, Materials Chemistry and Corrosion of the ETH Zurich (Swiss Federal Institute of Technology) has been closely involved with potential field measurement. This institute initiated Canin and has provided scientific support.
Printouts directly to scale are said to be possible with Canin, without PC via RS232 socket. These printouts contain scale with nine grey or colour levels with corresponding potential ranges. The total potential range can be optionally selected between +200 to –950mV.
In the display the moving cursor shows where the measuring is taking place within a measuring field. As Canin continuously monitors the size of the object,a printout is considered possible at any time. Measurements can be made on one object using a mixture of fine and coarse grid systems. Individual measurements can be overwritten, deleted or marked.
Details available from: Mastrad. Tel: +44 1937 574961; Fax: +44 1937 574450.
