435 hardness tester design: pressure range between 0-20N. Equipment placed on the test surface. So that it rests on two guide wheels, marking wheel locked in a position to press the preset spring pressure on the surface of high-temperature hardness, spring strength range can be divided into three parts, each containing a replaceable spring. Range 1:0-3 N Sensitivity: 0.1 N Scale 2:0-10 N Sensitivity: 0.5 N Scale 3:0-20 N Sensitivity: 1.0 N Germany 435 hardness tester operation method: Scratch tool is circular, with lock tight means, made of a special plastic or metal. Mounted on the screw, the pressure obtained from a helical spring, the spring can be adjusted to provide a first selection round of testing according to the test requirements, such as scratch resistance test for the plastic wheels, wheel or other special copper metal wheel for a scratch . After locking screw destructive hardness, marking the wheel does not rotate, and then set the appropriate pressure springs provide a needed. The instrument is then pressed down on the test surface, the guide wheel contact with the surface. The instrument is moved a distance (a few centimeters), the rolling surface of the wheel, to produce a rapid movement of the scratch, the test result is a spring force in Newtons. This force must produce a visible trace of hardness plants, but not cracks or scratches. If the purpose of the so-called metal marker effects, the results will be expressed as the surface of a black or gray print timing spring force. Note: The mark will wear wheel hardness after use, during a test 100, their position must be changed. To move forward along the periphery of 2mm, previously used tags round the point should be added to a scratch mark. HM6560 Leeb hardness tester main technical parameters Display: 12.5mm LCD, with backlight. Accuracy: relative error ± 0.8% (HL = 800), repeatability ± 0.8%. Measuring range: 200-900 HLD Hardness Conversion: HL-HRC-HRB-HB-HV-HSD test materials: nine kinds with RS232 interface can store 50 groups of measurements and test status impact device: D-type, weight 75g Power:节 4 1.5V AAA batteries Dimensions: 120 × 62 × 30mm Weight: 164g (without battery) Operating temperature: -10 ℃ ~ +50 ℃ Storage temperature: -30 ℃ ~ +60 ℃ Relative humidity: ≤ 90% Options : support ring hardness factory, Yantai hardness tester, hardness tester provided by 星枫 instruments. If you have any questions about this information or consultation, please contact us now! Our Company: Nanchang 星枫 Instrument Co., Ltd. (www.xingfengyiqi.com) Contact: Zhengjing, or click on "Business League call" direct dialogue with us!