Model:
HMJ1010-WAEA
Product Overview:
The HMJ1010-WAEA Intelligent Contact-type Ultrasonic Sensor is designed to monitor AE ultrasonic signals of partial discharge (PD) in GIS equipment. It integrates a low-power LoRa module, high-precision amplification circuitry, and an industrial-grade lithium battery. This sensor effectively monitors the insulation status of operating equipment, enabling early detection of potential risks to ensure the safe and stable operation of power systems.
Key Features:
1、High Sensitivity
Capable of detecting minimal ultrasonic signals generated by early-stage partial discharge, enabling timely detection of potential insulation faults.
2、Strong Electromagnetic Interference Resistance
The ultrasonic-based detection is independent of electrical circuits, ensuring stable operation even in complex electromagnetic environments.
3、Contact Detection Advantage
Direct contact with equipment reduces environmental noise and external interference, ensuring higher accuracy and reliability in PD detection.
4、Adaptability to Various Insulation Materials
Suitable for a wide range of electrical equipment made with diverse insulation materials, including transformers and GIS, without material limitations.
Main Parameters:
| Item | Technical Parameter |
| Frequency Range | 30kHz–200kHz |
| Resonant Frequency | 40kHz |
| Sensitivity | ≥120dB |
| Dynamic Range | ≥40dB |
| Communication Protocol | LoRa (wireless), RS485 (wired) |
| Power Supply | Built-in lithium battery (wireless), DC24V (wired) |
| Operating Temperature | -40°C to +85°C |
| Operating Humidity | 5%–95% RH |
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