SL-2098 buried pipeline external anti-corrosion layer condition detector [Function and purpose] Function: ★ The SL-2098 buried pipeline external anti-corrosion layer condition detector can easily and accurately detect the position, direction, depth, anti-corrosion layer damage points, number of damage points, distance between damage points, size of damage points, and other functions of underground metal pipelines without excavating the covering soil. Purpose: The SL-2098 model is used for pipeline acceptance according to SYJN4029-88 and GJJ33089 standards; The SL-2098 model conducts final acceptance of newly laid pipelines; The SL-2098 model conducts regular inspections on pipelines according to safety regulations to determine the effectiveness of cathodic protection; The SL-2098 model locates branches on the main pipeline; The SL-2098 model is used to inspect old pipelines and determine whether the pipeline section requires major repairs; ★ SL-2098 type conducts underground pipeline distribution inspection before excavation and soil breaking in the construction section to prevent damage to underground oil, gas, water, electricity and other pipelines during construction. 【 Features 】 The SL-2098 model adopts a new digital filtering technology, which can set the range of leakage points, automatically record the number of leakage points, and accurately display the distance between leakage points; The SL-2098 model has multiple detection methods and can automatically switch. Before the transmitter battery voltage is insufficient and it automatically shuts down, a prompt signal is sent to the receiver, and the value is automatically saved when it shuts down. The SL-2098 model is capable of automatically measuring the resistance of pipelines to ground, outputting modulated high-frequency alarm signals, and has extremely strong anti-interference ability. The output power of the transmitter can be automatically adjusted as the detection distance increases. After the detection is completed, the transmitter automatically shuts down, improving the detection effect of the instrument and extending the battery's usage time and lifespan. 【 SL-2098 Main Technical Specifications 】 III. Main Technical Specifications (1) Technical Specifications of the Transmitter: ● Power of the transmitter: 5-25W, adjustable automatically ● Output impedance matching: 5-500 Ω ● Transmission distance: 0.03-5Km, can gradually move 5KM away ● Working power supply: 12V (nickel cadmium battery) ● Weight: 3.5Kg ● Dimensions: 245 × 236 × 105 (2) Technical Specifications of the tube detector: ● Sensitivity: 0.1mV ● Position deviation: ≤ 5cm ● Depth of probe: ≤ 5m ● Distance measurement accuracy: ≤ 0.1% of the test distance ● Working power supply: 9.6V nickel cadmium battery ● External dimensions: 185 × 135 × 110 (III) Leak detector technical indicators: ● Leak detection accuracy: ≥ 0.25mm2 ● Working power supply: 9.6V nickel cadmium battery pack ● Dimensions: 185 × 135 × 110 【 Detection principle and method 】 Principle and method of detecting direction and burial depth: Send specific high-frequency modulation signals to underground pipelines to determine the position, direction, and depth of underground pipelines by detecting their magnetic field. There are peak value method and zero value method. Detection principle and method: Send a specific high-frequency modulation signal to the underground pipeline, form a loop with the ground at the point of damage to the anti-corrosion layer of the underground pipeline, and radiate to the ground. The radiation signal is strongest directly above the damage, and the damage point of the pipeline anti-corrosion layer is identified based on this principle. The "human body capacitance method" is used, which uses the human body as the sensing element of the leak detector. When the leak detector reaches the vicinity of the leak point, the leak detector begins to react. When it reaches directly above the leak point, the sound in the horn is the loudest, and the reading is the highest, thus accurately finding the leak point.