PR-I spark leak is a special instrument used to detect metal corrosion coating quality, the use of the instrument can be different thicknesses of glass-lined, glass, steel, coal tar epoxy coatings and rubber linings for quality testing. When the coating quality problems, such as pinholes, bubbles and cracks, the instrument will emit a bright spark, while a sound alarm. Because it is powered by batteries, it is especially suitable for field work. The instrument is advanced design, stable and reliable, and can be widely used in chemical, petroleum, rubber, ceramic industry, is used to detect metal corrosion coating quality essential tools. Second, the main technical performance: 1, for detecting thickness: 0.05 ~ 10mm (also available to detect coating according to user needs in more than 10mm instruments) 2, the output high voltage: 6kv ~ 30kv Output Low: 0.2kv-6kv (stepless adjustable) 3, the output value of high-voltage direct instruction 4, DC power supply: 12V 5, power consumption: about 6W 6, master volume: 170 × 160 × 70mm 7, alarm: buzzer three spark leak detection principle is through a variety of coating the surface of the conductive substrate plus a certain amount of pulse pressure, as a result of the coating is too thin, a pinhole leak leakage metal or when the pulse high voltage passed by, and the formation of a spark discharge gap breakdown, while giving alarm circuit to send a pulse signal to the alarm audible alarm, so as to achieve the purpose of detection of coating. IV. Configuration Single: (1) PR-I-type spark leak detector host 1 (2) high-voltage probe or probe a low pressure (3) Brush probe 2 (4) Manual 1 (5) Qualified Certificate 1 (6) charging cable 1 (7) Ground 1 (8) fuse two Optional accessories: semicircle brush ring brushes (any length)