Underground Metal Pipeline Cable Fault Locator Tdr Tester

Products introduction

The KD-2190 intelligent cable comprehensive detector is a path detection instrument with strong comprehensive performance. It has multiple functions such as pipeline path detection, cable identification, pipeline grounding fault detection, GPS surveying, etc. The instrument consists of a transmitter, transmitting current clamp, receiver, receiving flexible current clamp, connecting test line, stethoscope, A-frame (optional), surveying APP (optional), RTK (optional), etc.
 
Pipeline path detection: can be used for path detection, pipeline survey, and depth measurement of metal pipelines and underground cables without excavation.
 
The instrument uses various filtering techniques and has certain anti-interference ability, which can accurately locate and measure depth. It is suitable for pipeline detection and patrol of underground metal pipelines, pipeline management and maintenance, municipal planning and construction, power supply and other departments. It is one of the commonly used instruments in pipeline maintenance units.

Optional functions
Surveying APP: Use the APP in conjunction with the receiver to achieve GPS pipeline surveying function, achieve positioning measurement, management, and viewing of underground pipeline geographic coordinates, depth and other information, and provide cloud services for data storage, backup, transfer, etc.

Fault detection and positioning: With the A-frame, precise positioning of cable grounding faults can be achieved.

RTK: Use RTK equipment to achieve centimeter level high-precision positioning function, and use a dedicated APP in conjunction with a notebook to achieve precise fixed-point mapping of pipeline positions

Technical specifications

Receiver specifications

Function: Pipeline detection (cable position tracking, direction display, depth measurement, current measurement), cable identification, pipeline grounding fault detection, pipeline surveying, cloud service, Bluetooth communication
Power supply: 7.4V DC 3400mAh rechargeable lithium battery
Input method: built-in receiving coil, flexible caliper, stethoscope
Bluetooth communication: supports Bluetooth communication for instrument control, as well as connecting to mobile apps for various data processing
Receiving frequency: Active detection frequency: 577Hz, 640Hz, 1280Hz, 2.56kHz, 3.20kHz, 4.09kHz, 8.19kHz, 10kHz, 33kHz, 66kHz, 82kHz, 201kHz
Power frequency passive detection frequency: 50Hz, 250Hz
RF passive detection frequency band: the center frequency is divided into 33kHz and 82kHz
Pipeline detection modes: wide peak method, narrow peak method, and valley method
Pipeline detection display: classic positioning mode, wire cruise mode, signal curve mode
Pipeline detection and detection range:
Direct connection method: Generally, it can reach a cable length of 0-20 kilometers, mainly determined by grounding resistance, cable resistance, and cable burial depth
Coupling method: Generally, it can reach a cable length of 0-10 kilometers, mainly determined by grounding resistance, cable resistance, and cable burial depth
Induction method: suitable for cables buried in depths less than 2 meters
Depth and current: Automatically read cable depth and current values
Pipeline measurement depth: 0-20m
Depth accuracy: precise positioning accuracy of plane position: central axis position of target cable or pipeline:± 5% (buried in 0-3m) ± 10% (buried in 3-20m)
Correct or False Reminder: To eliminate interference from adjacent cables, when measuring adjacent cables, the measurement of adjacent cables can be distinguished based on the different signal strengths and measurement current phases feedback from adjacent cables. During cable tracking, observe the direction of the phase dial and pointer to distinguish between the measured cable and adjacent cable
Sound indication: FM tone that varies with signal strength
Anti interference capability: With a narrow receiving frequency band and digital processing methods, it can fully suppress power frequency and harmonic interference from adjacent running cables and pipelines
Interference distance: When using coupling and induction methods, the transmitter will generate interference at close range, and the distance of interference is related to the transmission power and frequency. The higher the power and frequency, the stronger the interference.
The minimum distance at which a receiver is not affected by transmitter interference often requires experimental determination:
Pipeline detection: It can be confirmed that there is no interference beyond 5m by coupling method and 20m by induction method
Cable identification: Coupling method can be confirmed as interference free from 2 to 5 meters away
Cable identification: identification methods: flexible caliper intelligent identification, stethoscope identification;
Number of calibratable cables: 1-10;
Calibration value: One of the successful recognition conditions is that the percentage of current between the received signal and the transmitted signal is between 75% and 135% of the calibration value;
Directionality: The direction of the transmitting clamp, receiving clamp, and loading signal must be consistent, which is one of the conditions for successful recognition
 
Cable identification detection range:
Direct connection method: can recognize signals with a circuit resistance of 0 Ω to 8k Ω (usually up to a cable length of 0-20 kilometers, mainly determined by the grounding resistance and cable resistance)
Coupling method: can recognize signals with a circuit resistance of 0 Ω to 1k Ω; (generally can reach a cable length of 0-6 kilometers, mainly determined by the grounding resistance and cable resistance)
LED night lighting: The receiver has LED flashlight function
LCD: 3.5-inch color screen LCD
Dimensions: Approximately 290mm (length) x 128mm (width) x 700mm (height)
Mass: approximately 1.90kg
Charger: DC 8.4V 1A
Lighting power: 1W max
Connection interface: 1 * mini-B USB interface (for firmware upgrade)
1 * DC charging port
1 * Flexible caliper connection socket
Flexible current clamp: approximately 620mm long, with a wire diameter of approximately 8mm
Inner diameter of coil: 200mm (larger diameter can be customized according to needs)
Stethoscope size: approximately 111mm x 60mm x 27mm in length, width, and thickness (optional for stethoscopes)
Lead length: stethoscope lead length: approximately 3m
Working temperature and humidity: -10 ºC~40 ºC; below 80% Rh
Storage temperature and humidity: -10 ºC~50 ºC; ≤ 95% RH, no condensation
Voltage resistance: AC3700V/rms (between the upper and lower ends of the shell)
Suitable for safety regulations: IEC61010-1 CAT III 600V, IEC61010-031, IEC61326, pollution level 2
 
Transmitter specifications
Function: Multiple frequency signal transmission methods
Power supply: 11.1V DC 12800mAh rechargeable lithium battery
Output methods: direct connection method, clamp coupling method, induction method
Output frequency: 577Hz, 640Hz, 1280Hz, 2.56kHz, 3.20kHz, 4.09kHz, 8.19kHz, 10kHz, 33kHz, 66kHz, 82kHz, 201kHz
Output power: 10W max, adjustable in 10 gears
Impedance: Fully automatic real-time impedance matching and protection function
Direct output voltage: 150Vpp max
Circuit protection: equipped with overload and short circuit protection
LCD: 5.6-inch LCD color screen LCD
Instrument size: approximately 320mm (length) x 275mm (width) x 145mm (height)
Mass: approximately 3.85kg transmitter; approximately 1.18kg transmitter clamp
Charger: DC 12.6V 2A
Launch clamp size: length, width, thickness 297mm x 194mm x 39mm
Inner diameter of launch clamp: 150mm
Launch clamp wire length: 3m
Test line: Red test line 3m, black test line 3m

Connection interface:
1 * Type-B USB interface (for firmware upgrade)
1 * DC charging port
1 * Signal transmission clamp connection socket
2 * Direct connection test line interface
Pressure resistance: The transmitter adopts an integrated specialized toolbox design, and the box can withstand about 200kg of pressure
Voltage resistance: AC 3700V/rms (between the top and bottom surfaces of the instrument box)
Electromagnetic characteristics: IEC61326 (EMC)
Suitable for safety regulations: IEC61010-1 (CAT III 300V, CAT IV 150V, pollution level 2)

This function is achieved through the combination of signal transmitter, receiver, signal transmission current clamp, and connecting test line. The instrument has the following characteristics:

1. Multiple detection modes: classic positioning mode, wire cruise mode, signal curve mode.
2. Classic positioning mode: Compass, direction, and signal amplitude display, visually displaying the left and right directions of the pipeline.
3. Wire cruise mode: 360 ° all-round pipeline path indication, continuously displaying depth, current, and relative position of pipelines. The interface is simple and intuitive, and can be operated without experience.
4. Signal curve mode: It can display the historical signal strength curve, and by observing the changes in the signal strength curve at different positions, find the position of the cable.
5. GPS surveying function: Users can view the geographical coordinates of underground pipelines surveyed by the receiver through the map inside the mobile app. By observing the underground pipeline path guidance map, they can view the buried direction of underground cables.
6. Current direction determination (partial frequency) can be achieved by calibrating the current direction to eliminate interference from adjacent lines and prevent tracking errors.
7. Equipped with a built-in frequency sweep testing function, users can select the appropriate signal frequency for pipeline measurement based on the frequency sweep results, avoiding interference with the same frequency.
8. Digital high-precision sampling processing: stable and reliable, ultra-high sensitivity, narrow receiving passband, strong anti-interference ability, can fully suppress power frequency and harmonic interference of adjacent running cables and pipelines.
9. Grounding fault finding (optional function): The transmitter emits positioning signals to the faulty cable, and the A-frame (optional accessory) can be used to locate the grounding fault location point of the pipeline, with arrows indicating the positioning direction.
10. Multiple detection frequencies: 12 active detection frequencies and 4 passive detection frequencies.
11. Multiple signal output methods for transmitters: direct output, clamp coupling, and induction method.
12. Digital amplification power output of the transmitter, automatic impedance matching, and automatic protection.
13. The instrument is equipped with a built-in high brightness lighting below, making it convenient for night work.
 
Cloud Services (optional): Built on the Android platform (compatible with the HarmonyOS system), utilizing the computing performance and network communication capabilities of mobile phones, real-time data exchange with servers, achieving functions such as engineering measurement, task management, data management, data viewing, generating test reports, data import, data export, and operation videos.

Surveying APP (optional): It is a self-developed APP that integrates comprehensive information management functions such as recording, managing, and generating reports on measurement data. It is used in conjunction with cable comprehensive detectors to achieve GPS surveying functions. The APP can manage tasks and generate reports for engineers in pipeline detection tasks, and has a user-friendly engineering guide function, which is convenient to use. One click task report generation includes length, depth, measurement frequency, measurement current, position information, and other content, improving the work efficiency of buried pipeline inspection personnel.

Cable identification: designed for power cable engineers and cable workers to solve technical problems in cable identification. It can be used to identify live and power cables. Users can accurately identify one of the target cables from multiple cables through instruments, avoiding serious accidents caused by accidentally sawing live cables. When identifying cables, 10 cables can be pre calibrated at the transmitting end and then received at the remote end, saving engineering personnel round-trip calibration operation time and improving work efficiency. If the cable identification is successfully marked with a √, non target cables can be marked with an X, and the target cable can be quickly and automatically identified. This function is achieved in conjunction with signal transmitters, receivers, signal transmission pliers, connecting test lines, flexible calipers, and stethoscopes. The stethoscope can be used when it is inconvenient to use calipers. Use.

Pipeline grounding fault diagnosis (optional function) :The traditional high-voltage flashover method can accurately locate ground insulation faults in buried power cables, buried communication cables, buried optical cables, etc. When applied to ground faults in buried cables, the discharge energy of the single-phase metallic ground fault point is directly proportional to the square of the discharge current and the ground resistance. Therefore, the sound of the fault clicking through the gap discharge is light and cannot be accurately located, and even in most outdoor noisy situations, the sound wave cannot be accurately captured, resulting in the inability to locate. Based on path detection instruments and A-frames for cable ground fault positioning, the step voltage method is used for measurement, and the results are stable, simple and easy to use, with accurate positioning. It can be used for accurate fault detection of ground faults in buried cables in multiple scenarios. Arrow direction indication.

Signal transmitter: used for pipeline path detection, cable identification, and insulation resistance testing. This equipment can add identification signals to the target cable through direct output, clamp coupling, induction method, and other methods. The signals include 577Hz, 640Hz, 1280Hz, 2.56kHz, 3.20kHz, 4.09kHz, 8.19kHz, 10kHz, 33kHz, 66kHz, 82kHz, and 201kHz, with a total of 12 different pulse signals to choose from. The maximum output power of the signal is 10W, with 10 adjustable levels to adapt to different application environments, making pipeline detection and cable identification more accurate and reliable. The instrument is equipped with a large functional rechargeable lithium battery, automatic impedance matching, and fully automatic. Protection. The transmitter adopts an integrated specialized toolbox design, and its box can withstand about 200kg of pressure. The host has a 5.4 inch color LCD display, which dynamically displays signals in real-time Output status and battery usage.
Transmission clamp: suitable for clamp coupling method. The transmission clamp couples the signal emitted by the transmitter to the target cable, with a clamp size of 150mm. The transmission clamp has directionality, and the transmission signal flows in the direction indicated by the arrow on the transmission clamp.

Receiver: Used for pipeline path detection, cable identification, and grounding resistance testing. Equipped with multiple shielded 3D antennas, it can effectively identify 12 different pulse coded current signals generated by the transmitter, including 577Hz, 640Hz, 1280Hz, 2.56kHz, 3.20kHz, 4.09kHz, 8.19kHz, 10kHz, 33kHz, 66kHz, 82kHz, and 201kHz. It can also recognize 50Hz and 250Hz power frequency signals and RF signals with center frequencies of 33kHz and 82kHz. Using a 3.5-inch color LCD screen, it dynamically displays 360 ° all-round pipeline path indication, depth, current, and relative position of the pipeline in real-time.

A-frame (optional): A voltage signal sensor designed specifically for locating grounding faults in buried cables, resembling an A-frame. The two probes or probes on the A-frame can accurately receive step voltage signals emitted by the transmitter, and after data analysis, they can accurately locate the grounding fault point of the cable. The probes or probes are designed to be independent and interchangeable, suitable for muddy ground, and suitable for cement road surfaces that cannot be directly inserted into the ground. The A-frame has an aviation socket designed for the lead out line, which is connected to the receiver with an aviation plug connection line. It is detachable and compatible with independent design handles, allowing the A-frame to work independently for other functions.

Flexible current clamp: used for cable identification. This current clamp is a Roche coil with transient tracking ability, which can quickly identify the pulse width frequency signal generated by the transmitter. It is suitable for thick cables or irregularly shaped conductors. The inner diameter of its clamp is about 200mm, and it can clamp cables with a diameter of less than 200mm without disconnecting the tested line. Non contact measurement is safe and fast.

Stethoscope: used for cable identification. Similar in shape to a mouse, it can quickly sense and recognize current signals in the transmitter or cable. The curved sensor design is attached to the surface of the cable. When combined with this product's transmitter and receiver, it can achieve most of the functions of flexible current clamps and can replace flexible current clamps for cable identification in most situations. When in use, the stethoscope can be tightly attached to the tested cable along the direction of the cable, making it suitable for situations where it is not convenient to use flexible current clamps for testing.