It can accurately accomplish the pipeline orientation, depth measurement, outer pipeline anti-corrosion coating damage point orientation and pipeline branch or overlap joint screening. The data handling software introduces the relevant industrial standards such as SY/T5918-2004, which can make piecewise calculation on insulation resistance Rg of pipeline anti-corrosion coating and evaluate the anti-corrosion coating insulation performance.
PCM+ of Britain Radio(Orientation and depth measure ≤±5% and current measurement≤±5%, stable and reliable). Meanwhile, the underground pipeline anti-corrosion coating detection equipment of Britain Radio has great influence on pipeline detection industries such as China Petroleum, petrifaction and scientific research. Its detection effect has been well received in China. Domestic special detection industries basically purchase this equipment. With regard to software, due to no analysis software of the imported instrument, the general analysis result, to some extent, cannot be accepted. After equipped with the professional detection data handling system ESTEC xp (originally called GDFFW which is the SY/T5918-2004 standard designated data analysis software, it can complete the automatic record of the detection data, examination of signal current and depth curve as well as organization and combination of data. It can make the piecewise rating on anti-corrosion coating quality (excellent, good, qualified, poor and bad). The rating result meets the SY/T5918-2004 standard.
D.C Voltage Gradient Measurement DCVG
When D.C signal such as cathodic protection current is added to the pipeline, the current density of the defect point of the pipeline anti-corrosion coating will increase. And then, the voltage gradient will grow. The voltage gradient is in direct proportional to the damage area of the defect point.
