Products

Model:
HD-DGT20G
Introduction:
Underground Pipeline Detector (Intelligent Pipeline Detector) locates buried metal pipelines and cables without excavation, including path tracing, cable identification, depth measurement and fault finding. Widely used for municipal, power, communication and water pipeline survey....
The Intelligent Pipeline Locator (also known as a pipe locator or path tracer) is a high-performance trenchless underground pipeline detection device that integrates path detection, cable identification and fault location. It consists of a transmitter, transmitting current clamp, receiver, flexible current clamp, connection test leads and an optional A-frame. It can complete path detection, general survey and depth measurement of metal pipelines and underground cables under trenchless conditions. The device adopts fully digital high-precision sampling and multi-stage filtering anti-interference technology, and features multiple modes such as classic localization, line cruise and signal distortion measurement. It supports 11 active and 3 passive detection frequencies. The transmitter supports three signal output methods - direct connection, coupling and induction - with adjustable digital power and built-in automatic matching and protection functions. Its cable identification function can accurately distinguish energized from de-energized cables, supports pre-calibration followed by remote identification, and automatically marks the target cable. Combined with a large-diameter flexible current clamp, it achieves non-contact safe detection. It is widely used in municipal planning, power supply operation and maintenance, and pipeline management and maintenance, and is an essential professional instrument for pipeline detection and maintenance.
1. Multiple detection modes: classic localization mode, line cruise mode and signal distortion measurement mode.
2. Classic localization mode: compass, direction and signal amplitude display, intuitively showing the left-right direction of the pipeline.
3. Line cruise mode: 360° omnidirectional pipeline path indication, continuously displaying depth, current and relative pipeline position. The interface is simple and intuitive, requiring no experience to operate.
4. Signal distortion measurement mode: simultaneously displays peak and trough waveforms. At a distortion-free site, the peak and trough positions should be consistent, and the field shape should be symmetric about the centerline.
5. Current direction determination (for some frequencies): by calibrating the current direction, adjacent-line interference can be eliminated to prevent tracking errors.
6. Fully digital high-precision sampling processing: stable and reliable, ultra-high sensitivity, extremely narrow receiving passband and strong anti-interference capability, able to fully suppress the power-frequency and harmonic interference of adjacent operating cables and pipelines.
7. Multiple detection frequencies: 11 active detection frequencies and 3 passive detection frequencies.
8. Multiple transmitter signal output methods: direct connection output, clamp coupling and induction method.
9. Transmitter digital amplified power output, fully automatic impedance matching and fully automatic protection.
1. Receiver Specifications
| Item | Specification |
|---|---|
| Function | Pipeline detection (cable position tracking, direction display, depth measurement, current measurement), cable identification, A-frame fault location (optional) |
| Power | 8.4 V large-capacity rechargeable lithium battery |
| Input Method | Built-in receiving coil, flexible clamp, A-frame (optional) |
| Receiving Frequency | Active detection frequencies: 640 Hz, 1.28 kHz, 2.56 kHz, 3.20 kHz, 4.09 kHz, 8.19 kHz, 10.2 kHz, 32.7 kHz, 65.6 kHz, 81.9 kHz, 197 kHz; Power-frequency passive detection frequencies: 50 Hz, 60 Hz, 250 Hz; Radio-frequency passive detection band: center frequencies 32.7 kHz, 65.6 kHz, 81.9 kHz, 197 kHz |
| Pipeline Detection Mode | Wide-peak method, narrow-peak method, sound-valley method |
| Pipeline Detection Display | Classic localization mode, line cruise mode, signal distortion measurement mode |
| Pipeline Detection Range | Direct connection method: generally up to 0-20 km of cable length, mainly determined by grounding resistance, cable resistance and cable burial depth; Coupling method: generally up to 0-10 km of cable length, mainly determined by grounding resistance, cable resistance and cable burial depth; Induction method: suitable for cables buried less than 2 m deep |
| Depth and Current | Real-time display of cable depth and current value |
| Pipeline Measurement Depth | 0-20 m |
| Depth Accuracy | Planar position precise localization accuracy: ±5% (burial depth 0-3 m); Center axis position of target cable or pipeline: -10% (burial depth 3-20 m) |
| Correctness Prompt | Eliminates adjacent cable interference. When measuring near adjacent cables, the measurement of adjacent cables can be distinguished according to the different signal strengths fed back by adjacent cables and the measured current phase. During cable tracking, observe the phase dial and pointer direction to distinguish the cable under test from adjacent cables |
| Sound Indication | Frequency-modulated tone that varies with signal strength |
| Anti-interference Display | Green: no interference; Green: good (reliable result); Red: severe interference (unreliable result) |
| Anti-interference Capability | Extremely narrow receiving band and unique digital processing method, able to fully suppress the power-frequency and harmonic interference of adjacent operating cables and pipelines |
| Interference Distance | When using the coupling and induction methods, the transmitter generates interference at close range. The interference distance is related to the transmitting power and frequency; the greater the power and the higher the frequency, the stronger the interference. The minimum distance at which the receiver is free from transmitter interference usually needs to be determined by testing: Pipeline detection: no interference confirmed beyond 5 m for the coupling method and beyond 20 m for the induction method; Cable identification: no interference confirmed beyond 2-5 m for the coupling method |
| Cable Identification | Identification method: flexible clamp intelligent identification; Number of calibratable cables: 1-20; Calibration value: the current percentage of the received signal to the transmitted signal being between 75%-135% is one of the conditions for successful identification; Directionality: the transmitting clamp, receiving clamp and loaded signal must be in the same direction, which is one of the conditions for successful identification |
| Cable Identification Detection Range | Direct connection method: can identify signals with loop resistance of 0 Ω - 8 kΩ (generally up to 0-20 km of cable length, mainly determined by grounding resistance and cable resistance); Coupling method: can identify signals with loop resistance of 0 Ω - 1 kΩ (generally up to 0-6 km of cable length, mainly determined by grounding resistance and cable resistance) |
| LCD | 4.3-inch LCD color screen (high-brightness), visible in sunlight |
| Touch | Yes, capacitive touch |
| Dimensions | About 350 mm (L) × 155 mm (W) × 700 mm (H) |
| Weight | About 2 kg |
| Connection Interfaces | Type-C USB interface, aviation socket |
| Coil Inner Diameter | φ200 mm (larger diameters can be customized as needed) |
| Working Temperature and Humidity | -10 ℃ - 40 ℃; below 80% RH |
| Storage Temperature and Humidity | -10 ℃ - 50 ℃; ≤95% RH, no condensation |
| Withstand Voltage | AC 2000 V/rms (between the front and rear ends of the enclosure) |
| Applicable Safety Standards | IEC61010-1 CAT Ⅲ 600V, IEC61010-031, IEC61326, pollution degree 2 |
2. Transmitter Specifications
| Item | Specification |
|---|---|
| Function | Multi-frequency signal transmission |
| Power | 10.8 V large-capacity rechargeable lithium battery |
| Output Method | Direct connection method, coupling method, induction method |
| Output Frequency | 640 Hz, 1.28 kHz, 2.56 kHz, 3.20 kHz, 4.09 kHz, 8.19 kHz, 10.2 kHz, 32.7 kHz, 65.6 kHz, 81.9 kHz, 197 kHz |
| Output Mode | Automatic identification; automatically identifies according to different accessories |
| Output Power | 15 W max, 9 levels adjustable |
| Impedance | Fully automatic real-time impedance matching and protection function |
| Direct Connection Output Voltage | 150 Vpp max |
| Circuit Protection | Overload and short-circuit protection |
| LCD | 5-inch LCD color screen |
| Touch | Yes, capacitive touch |
| Instrument Dimensions | About 320 mm (L) × 275 mm (W) × 145 mm (H) |
| Weight | Transmitter about 3.85 kg; transmitting clamp about 1.18 kg |
| Charger | DC 11.1V 3A |
| Transmitting Clamp Dimensions | Length × width × thickness 297 mm × 194 mm × 39 mm |
| Transmitting Clamp Inner Diameter | φ125 mm |
| Transmitting Clamp Cable Length | 3 m |
| Test Leads | Red test lead 3 m, black test lead 3 m |
| Connection Interfaces | USB interface, DC interface, aviation socket |
| Pressure Resistance | The transmitter adopts an integrated dedicated toolbox design; the box body can withstand about 200 kg of pressure |
| Withstand Voltage | AC 3700 V/rms (between the top and bottom surfaces of the instrument box) |
| Electromagnetic Characteristics | IEC61326 (EMC) |
| Applicable Safety Standards | IEC61010-1 (CAT Ⅲ 300V, CAT IV 150V, pollution degree 2) |
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