Purpose SYF71 crack width and depth tester is used to test the crack depth and width. It is one professional crack measurement in one comprehensive test instrument, mainly used for crack detection of bridges, tunnels, walls, concrete pavement, metal surface. Specification The People's Republic of China Housing Security accreditation standards --- GJ125-99 Technical specification for inspection of concrete defects by ultrasonic method (CECS 21:2000) Performance/Functions 1. Large-screen display: 5 "color LCD display with a resolution of 640 * 480; 2. A high degree of intelligence: the boot that is measured, without human involvement parametric interpretation, display sewn deep value; real-time detection and automatic interpretation crack width, but also the manual interpretation crack width value, manually move the cursor to define the crack boundary is displayed on the screen scale ruler display crack width value; 3. Deep test: maximum test depth up to 650mm; maximum width up to 8mm 4. Dedicated scale: instrument equipped with a dedicated scale, portable and practical, to improve the efficiency of the test. 5. The instrument can be set and saved the test date: user-friendly data management 6. Easy data transfer: the instrument can be directly connected to the computer, copy pictures and data transmission without U disk; 7. Powerful professional windows data analysis processing software: data can be imported into Word and Excel, convenient and user-friendly post-processing of data. Technical Measurements 1. Crack depth testing range: =< 650 mm; test error: =< 10%; 2. Crack width value of measuring range: 0 ~ 8mm; width measurement accuracy: 0.01mm; 3. Crack depth test data storage capacity: 6000 set of test data; 100,000 and can store the image and width of cracks measured point data; 4. LCD screen resolution: 160X128 dot matrix 5. Built-in rechargeable lithium battery, can work continuously for eight hours; 6. Operating Temperature: -10 ? ~ +50 ?; 7. Host size: 190mm × 183mm × 84mm