1.一代示蹤線：是由鋁箔和塑料薄膜的母體組成，鋁箔主要是傳輸信號，母體是固定鋁箔。這種示蹤線缺點：鋁箔強度非常低，即使在生產，運輸過程中也很容易斷裂，輔設易損傷，同時鋁箔的電阻非常大，有效探測距離和深度有限。

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.

2.二代示蹤線：是由鋼絲和塑料薄膜壓制而成，該示蹤線由鋼絲為導體，電阻大，探測距離有限，難以滿足實際需要。

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.

3.三代示蹤線：是由銅包鋼金屬線芯和PE外保護層組成，外觀成線狀。

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.

地埋示蹤線結構

Buried tracer line structure

PE外保護層，絕緣、防腐、防水、抗老化

PE outer protective layer, insulation, anti-corrosion, waterproof, anti-aging

銅層，增強導電性，提高電信號

Copper layer, enhance conductivity and improve electrical signal

鋼芯，增強線體強度

Steel core, enhance the strength of wire body

雙線連體結構，可以使兩條線同等受力，受力均勻

The double line connected structure can make the two lines bear the same force and the force is uniform

示蹤線優勢

Advantage of tracer line

電阻小

Low resistance

抗拉強度高

High tensile strength

抗腐蝕抗老化能力強

Strong corrosion and aging resistance

雙線優勢

Double track advantage

連接處有防護接頭連接

There is a protective joint connection at the connection

連接方式

Connection mode

示蹤線有的防護接頭，用于線于線之間的連接，接頭具備防水防腐的密閉腔體，將示蹤線裸露線頭放置于密閉腔體內，從而保護裸露的失蹤線頭無法被腐蝕，接頭由PE材料制造，本身具備抗腐蝕、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.

示蹤線的鋪設與探測

Laying and detection of tracer line

示蹤線在鋪設時一定要和管道一起放置，埋地管線探測人員要經過培訓并且合格后才能上崗操作，探測時，將管線探測儀發射機一端接在失蹤線上，另外一端接地，沿管線大致走向，用管線探測儀探測管線位置和深度。

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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