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Characteristics of FJ-10 Underground Pipeline Detector Instrument
1. Adopting a flat design and keyboard operation, one click multi use.
2. Without the need for additional wiring, simply press the measurement button to automatically measure parameters such as transmission power, transmission voltage, transmission current, and grounding resistance.
3. The signal strength of the entire detection process is normalized by the internal circuit to ensure comparability of the leakage point size and insulation resistance value of the anti-corrosion layer in each measurement section.
4. By using voltage controlled vibration frequency technology, the signal strength of the pipe position and leakage point can be clearly reflected.
5. Sound system, indication, analog bar cursor, display signal strength more intuitively.
6. Easy to operate, simple to use, easy to learn and understand.
7. Small size, light weight, easy to carry, and more suitable for field testing.
8. Automatically shut down when the instrument voltage is insufficient, and automatically cut off the internal power supply when shutting down
[Function and Purpose]
Function of FJ-10 underground pipeline detector:
★ This instrument can easily detect the location, direction, depth, damage points and sizes of the anti-corrosion layer of buried pipelines, as well as the insulation resistance of the anti-corrosion layer, without excavating the covering soil.
Purpose:
Conduct pipeline acceptance according to SYJN4029-88 and GJJ33089 standards;
Conduct final acceptance of newly laid pipelines;
According to regulations, conduct regular inspections of pipelines to determine the effectiveness of cathodic protection;
★ Locate the branches on the supervisory line;
★ Conduct inspections on old pipelines to determine the condition of their anti-corrosion coatings;
Before excavating and breaking soil in the construction section, inspect the distribution of underground pipelines to prevent damage to underground oil, gas, water, electricity and other pipelines during construction.
[Features]
★ It has multiple detection methods: it can automatically switch and save values automatically when turned off.
★ It can automatically measure the ground resistance of the pipeline, output signal modulation high-frequency alarm signal, resist interference, improve the detection effect of the instrument, and extend the service life and lifespan of the battery.
[FJ-10 Underground Pipeline Detector Detection Principle and Method]
The principle and method of detecting the direction and burial depth: sending specific high-frequency modulation signals to underground pipelines to determine their position, direction, and depth by detecting the magnetic field of the underground pipelines.
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. Radiate the signal * strongly directly above the damage, and use this principle to identify the point of damage to the pipeline anti-corrosion layer.
★ Adopting the "human body capacitance method", which uses the human body as the sensing element of the leak detector. When the leak detector walks near the leak point, the leak detector emits a sound prompt. When it reaches directly above the leak point, the sound in the horn * sounds, indicating a large value, thus finding the leak corrosion point.
Product performance
Technical specifications of FJ-10 underground pipeline detector instrument
1. Technical specifications of the transmitter:
(1) Transmitter power: 0-35W, can automatically adjust servo control
(2) Output impedance matching: 5-1000 Ω, automatic matching (more suitable for northern arid, desert and other soil environments)
(3) Launch distance: 0.03-10Km, can gradually move beyond 10Km
(4) Working power supply: 12V
(5) Working temperature: -20 ℃ -+60 ℃
(6) Control system: DSP+vector control, supports system upgrade
(7) Adjustment system: digital keyboard control
(8) Weight: 3.0Kg (including battery)
(9) Dimensions: 276mm × 227mm × 98mm
2. Technical specifications of the probe:
(1) Sensitivity: -85db
(2) Position deviation: ≤ 5cm
(3) Depth of probe: ≤ 10m
(4) Distance measurement accuracy: ≤ 0.1% of the test distance
(5) Working power supply: 9.6V nickel hydrogen battery pack
(6) Dimensions: 165 mm × 110 mm × 68 mm
(7) Weight: 0.9Kg (including battery)
3. Technical specifications of leak detector:
(1) Leak detection accuracy: ≥ 0.25mm2
(2) Position deviation: ≤ 5cm;
(3) Working power supply: 9.6V nickel hydrogen battery pack
(4) Dimensions: 165 mm × 110 mm × 68 mm
(5) Weight: 0.9Kg (including battery)
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