The LDJF-701Q Sonic Instrument is an innovative device that integrates acoustic positioning and partial discharge detection, specifically designed for high-voltage switchgear, transformers, and other applications GIS、 Designed for insulation state detection and evaluation of power equipment such as cables. This product adopts advanced microphone array technology, combined with high-definition cameras, which can collect real-time sound wave data and perform precise positioning. At the same time, it provides multiple detection modes such as ultrasonic waves and ground waves, fully covering the partial discharge detection needs of power equipment.
| Geoelectric Wave Parameters | |
| Measurement range | 0~80 dBmV |
| Resolution | 0.1dB |
| Accuracy | ±1dB |
| Maximum pulse per cycle | 1400 |
| Measurement band | 3~100MHz |
| Contact Ultrasonic Parameters | |
| Measurement range | -8dB μV to 80dB μV |
| Resolution | 0.1dB |
| Accuracy | ±1dB |
| Frequency range | 20~500 kHz |
| Non-Contact Ultrasonic Parameters | |
| Measurement range | -8dBμV~80dBμV |
| Resolution | 0.1dB |
| Accuracy | ±1dB |
| Sensor center frequency | 40 kHz ± 2kHz |
| UHF Parameters | |
| Detection frequency band | 300MHz~3000MHz |
| Measurement range | -80 ~ -10dBm |
| High Frequency Transformer Parameters | |
| Sensor transmission impedance | 9.9mV/mA |
| Detection frequency | 0.5~50MHz（Customizable） |
| Sensitivity | 1mV |
| Inspection range | 0~3000 mV |
| Hardware | |
| Shell | ABS |
| Display | 7-inch capacitive touch screen with 1280 * 800 resolution |
| Sampling accuracy | 12bit |
| Synchronization mode | Internal synchronization, external synchronization |
| Connector | USB interface (also charger input) External sensor input interface WIFI, Network Port, Bluetooth |
| SD Card | Standard 128G ~ 256G |
| Built-In Battery | 12.6 V/5000mAh lithium battery |
| Working hours | About 6 hours |
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. 2. To learn more about Longdian products, please enter the product center. Service Hotline: 400-6727-238
Multi functional integration: LDJF-701Q integrates multiple functions such as acoustic positioning, partial discharge detection, gas leakage detection, etc. By replacing different sensors, comprehensive detection of various power equipment can be achieved.
High precision acoustic positioning: Using 64 to 128 high-sensitivity digital microphone arrays, combined with beamforming technology, high-precision acoustic positioning is achieved to accurately capture discharge points and gas leakage sources.
Intelligent data analysis: The device is equipped with an intelligent data analysis system that can automatically collect, store, and analyze detection data. It provides various analysis tools such as time-domain, PRPD, and PRPS maps to help users quickly locate problem points.
Wireless connection and export: Supports multiple wireless connection methods such as WiFi and Bluetooth, making it convenient for users to export data to their computer or phone for further analysis. At the same time, the device is also equipped with a USB interface, supporting USB storage and export functions.
Humanized operation interface: adopting a 7-inch capacitive touch screen with a resolution of up to 1280 * 800, the operation interface is intuitive and easy to understand, supporting dual operation modes of buttons and touch screen, meeting the usage habits of different users.
Efficient and energy-saving design: Equipped with a built-in 12.6V/5000mAh lithium battery, it supports long-term continuous operation, and the device will automatically shut down to save power if there is no operation within 15 minutes.
Wide applicability: LDJF-701Q is suitable for various fields such as power generation and distribution enterprises, railway systems, petrochemical power supply systems, etc. It can help users discover and handle potential problems in power equipment in a timely manner, ensuring the safe and stable operation of the power system.
