1.一代示踪线：是由铝箔和塑料薄膜的母体组成，铝箔主要是传输信号，母体是牢靠铝箔。这种示踪线弱点：铝箔强度很是低，纵然在生产，运输历程中也很容易断裂，辅设易损伤，同时铝箔的电阻很是大，有用探测距离和深度有限。
1. First generation trace line: it is composed of aluminum foil and plastic film. Aluminum foil is mainly used to transmit signals, and the matrix is fixed aluminum foil. Disadvantages of this tracer line: the strength of aluminum foil is very low, which is easy to break even in the process of production and transportation, and the auxiliary equipment is easy to be damaged. At the same time, the resistance of aluminum foil is very large, and the effective detection distance and depth are limited.
2.二代示踪线：是由钢丝和塑料薄膜压制而成，该示踪线由钢丝为导体，电阻大，探测距离有限，难以知足现实需要。
2. Second generation tracer wire: it is pressed by steel wire and plastic film. The tracer wire is made of steel wire as the conductor, with high resistance and limited detection distance, which is difficult to meet the actual needs.
3.三代示踪线：是由铜包钢金属线芯和PE外� ；げ阕槌�，外观成线状。
3. Third generation tracer wire: it is composed of copper-clad steel metal wire core and PE outer protective layer, and its appearance is linear.
Buried tracer line structure
PE外� ；げ�，绝缘、防腐、防水、抗老化
PE outer protective layer, insulation, anti-corrosion, waterproof, anti-aging
铜层，增强导电性，提高电信号
Copper layer, enhance conductivity and improve electrical signal
钢芯，增强线体强度
Steel core, enhance the strength of wire body
双线连体结构，可以使两条线一律受力，受力匀称
The double line connected structure can make the two lines bear the same force and the force is uniform
示踪线优势
Advantage of tracer line
电阻小
Low resistance
抗拉强度高
High tensile strength
抗侵蚀抗老化能力强
Strong corrosion and aging resistance
双线优势
Double track advantage
毗连处有防护讨论毗连
There is a protective joint connection at the connection
毗连方法
Connection mode
示踪线有的防护讨论，用于线于线之间的毗连，讨论具备防水防腐的密闭腔体，将示踪线裸露线头安排于密闭腔体内，从而� ；ぢ懵兜氖ё傧咄肺薹ū磺质�，讨论由PE质料制造，自己具备抗侵蚀、抗老化能力。
There are protective joints for the tracer line, which are used for the connection between lines. The joint has a waterproof and anti-corrosion closed cavity. The exposed ends of the tracer line are placed in the closed cavity, so as to protect the exposed missing ends from corrosion. The joint is made of PE material and has the ability of corrosion resistance and aging resistance.
示踪线的铺设与探测
Laying and detection of tracer line
示踪线在铺设时一定要和管道一起安排，埋地管线探测职员要经由培训并且及格后才华上岗操作，探测时，将管线探测仪发射机一端接在失踪线上，另外一端接地，沿管线大致走向，用管线探测仪探测管线位置和深度。
The tracer line must be placed together with the pipeline when laying. The buried pipeline detector can only work after being trained and qualified. When detecting, connect one end of the transmitter of the pipeline detector to the missing line and the other end to the ground. Along the general direction of the pipeline, use the pipeline detector to detect the position and depth of the pipeline.
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