Most of the existing spark detector into 4KV, 8KV, 35KV three kinds, used to measure the different coating thicknesses. Most OUD3 type spark detector instrument equipped with its own rechargeable battery, convenient site, workshop. Many different types of probes, in order to apply different working environments and artifacts. Calculation table with the instrument, you can calculate the size of the specific location of the pressure, the voltage is too high, coating breakdown voltage is too low to detect defects such as pinholes, depending on your coating thickness. Use the instrument probe must not touch the body, so as to avoid personal injury. Spark detector and use it for different purposes, it can be divided into geographical DC spark detector and two AC spark detector. DC spark detector is mainly applied to the field of construction work, easy to use and quick to use, such as open space. Primarily by lead-acid batteries or NiMH batteries. AC spark detector is mainly applied in factories, workshops and other closed-end, easy to use the power of local authorities. Mainly through the 220v power supply. According to different classification spark detector, the user can, depending on the user's site, and to select the appropriate instrument, while according to the different thickness of the detection range, configure different detection probes, such as low or high voltage probe. Webster Hardness Tester certain hard pressed steel needle shape in the standard spring force pressed into the surface of the test specimen, with pressure pressure needle depth gauge to determine the hardness of the coating material is defined as the indentation depth of 0.01mm a Vickers hardness units. Webster hardness units for HW. Webster Webster Hardness Tester Hardness Tester uses for aluminum products Webster Webster durometer hardness measurement characteristics Webster Hardness is a small portable instrument gauge manufacturers, it is small, light weight, one-hand operation for fast, easy, non-destructive testing of material hardness, it does not have to sampling for demanding production skills thickness, very suitable for the production site for material hardness testing fast. Webster Hardness drawback is poor sensitivity, range is narrow, only 20 full-scale range, it is often an instrument can only test 1 to 2 kinds of metal materials. Thickness agent Branch of the Instrument (certified), gage provided by Qingdao Branch of the Instrument Co., Ltd. Qingdao Branch of the Instrument Co., Ltd. (www.qdjk17.com) is Qingdao, a leader in analytical instruments, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Branch of the Instrument in leadership with the staff warmly welcome all inquiries negotiations to create Branch instrumentation a better future.