◆ Narrow-linewidth Semiconductor Lasers Independently developed and manufactured. Specially modulated laser wavelengths prevent cross-interference among multiple gases and improve trace gas detection precision. ◆ Patented Photoacoustic Cell Proprietary sub-ultrasonic resonant photoacoustic cell, compact (5 cm long, 20 g weight), highly responsive and vibration‑free. No moving parts avoids system vibration, extending service life and enhancing reliability. ◆ Custom High-sensitivity Digital Sub-ultrasonic Microphone Operates in the sub-ultrasonic band, less affected by external noise, ensuring stable and accurate system performance
Technical Specifications
Operating parameters
| Parameter | Specification |
|---|---|
| Power Input | 220 V AC ±10%, 50 Hz |
| Power Consumption | < 200 W |
| Weight | < 10 kg |
| Dimensions | 260mm(H)*260mm(W)*300mm(D) |
| Ambient Temperature | -40 ℃ ~ +55 ℃ |
| Ambient Humidity | 10 ~ 95 % RH |
| Measurement Cycle | Minimum 10 mins, Maximum 24 hours |
| Control Mode | Automatic, menu setting, manual control |
| Communication Interface | RJ45,Fiber optic ,RS485 |
| Communication Protocol | IEC61850,TCP/IP,Modbus |
| Altitude | ≤ 5000 m |
| Overvoltage Category | IV |
| IP Rating | IP55 |
| Insulation Resistance of External Circuit | ≥ 100 MΩ |
Standard measurement error limit
| Measured Component | Detection Range (μL/L) | Measurement Error Limit |
|---|---|---|
| Hydrogen (H₂) | 0~2000 | ±3 μL/L or ±30% |
| Acetylene (C₂H₂) | 0~2000 | ±1 μL/L or ±30% |
| Carbon Monoxide (CO) | 0~3000 | ±30 μL/Lor ±30% |
| Moisture in Oil | 0~100 | ±3μL/L or ±10% |
1.Gas concentration in oil
2.The greater of the measurement error percentage or in μL/L
Authoritative organization certification & testing report


Application Diagram
![]() | 「Meets A-level product standards and has received recognition and praise from industry customers for its application.」 「Assist customers in timely detecting and monitoring transformer fault gases during equipment operation and inspection, early detection and warning, reducing transformer failure rates, and improving safety operation levels.」 「Upgraded products of gas chromatography and traditional photoacoustic spectroscopy, no need for carrier gas, no gas cross interference, high accuracy, and long-term stability of equipment.」 「For more product information, please consult now」 |
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Application Cases

◆ Measures Acetylene (C₂H₂), Ethylene (C₂H₄), Methane (CH₄), Hydrogen (H₂), Carbon Monoxide (CO), Carbon Dioxide (CO₂), Ethane (C₂H₆) and moisture content. A gas collection box gas monitoring module is available as an option to deliver comprehensive real-time monitoring and early warning for large-scale power transformers. ◆ Provides fault early warning and monitoring for oil-immersed transformers, and performs fault analysis and diagnosis by adopting methods including the David Triangle Diagram Method and the Three-Ratio Method.
◆ Narrow-linewidth Semiconductor Lasers Independently developed and manufactured. Specially modulated laser wavelengths prevent cross-interference among multiple gases and improve trace gas detection precision. ◆ Patented Photoacoustic Cell Proprietary sub-ultrasonic resonant photoacoustic cell, compact (5 cm long, 20 g weight), highly responsive and vibration‑free. No moving parts avoids system vibration, extending service life and enhancing reliability. ◆ Custom High-sensitivity Digital Sub-ultrasonic Microphone Operates in the sub-ultrasonic band, less affected by external noise, ensuring stable and accurate system performance
◆ Measures acetylene (C₂H₂) and moisture content. It incorporates three independent detection systems to achieve redundant configuration, providing critical real-time monitoring and early warning for large-scale power transformers. ◆ Designed for relay protection and control of oil-immersed transformers, it can independently perform rapid and automatic detection of dissolved acetylene content in transformer oil, as well as equipment fault analysis, diagnosis and early warning.
◆ Narrow-linewidth Semiconductor Lasers Independently developed and manufactured. Specially modulated laser wavelengths prevent cross-interference among multiple gases and improve trace gas detection precision. ◆ Patented Photoacoustic Cell Proprietary sub-ultrasonic resonant photoacoustic cell, compact (5 cm long, 20 g weight), highly responsive and vibration‑free. No moving parts avoids system vibration, extending service life and enhancing reliability. ◆ Custom High-sensitivity Digital Sub-ultrasonic Microphone Operates in the sub-ultrasonic band, less affected by external noise, ensuring stable and accurate system performance
◆ Narrow-linewidth Semiconductor Lasers Independently developed and manufactured. Specially modulated laser wavelengths prevent cross-interference among multiple gases and improve trace gas detection precision. ◆ Patented Photoacoustic Cell Proprietary sub-ultrasonic resonant photoacoustic cell, compact (5 cm long, 20 g weight), highly responsive and vibration‑free. No moving parts avoids system vibration, extending service life and enhancing reliability. ◆ Custom High-sensitivity Digital Sub-ultrasonic Microphone Operates in the sub-ultrasonic band, less affected by external noise, ensuring stable and accurate system performance