Hertzinno DGA-900 Monitor System (PAS) represents a breakthrough in online dissolved gas analysis for power transformers. This next-generation system integrates enhanced photoacoustic spectroscopy with photonic spectral technology to deliver high-precision monitoring of trace gases in transformer oil. Engineered with MEMS-based dual-chamber architecture and patented innovations, the DGA-900 simultaneously quantifies nine critical gases—H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, O₂, and N₂—alongside trace moisture levels.
It provides comprehensive analytics including absolute/relative growth rates with parts-per-billion sensitivity.
Designed for extreme durability, the system operates maintenance-free for 10 years of continuous service, establishing unprecedented reliability for critical grid asset protection.
HERTZINNO DGA Systems redefine precision and reliability in dissolved gas analysis through groundbreaking theoretical innovations and revolutionary structural design. Our patented dual-spectroscopy fusion (photoacoustic + photonic) achieves 0.2ppm detection limits – surpassing conventional NDIR technology by 10x.
The electronically-isolated dual-chamber architecture eliminates measurement drift in corrosive environments, while MEMS-IR frequency modulation ensures 10-year maintenance-free operation with ±5% accuracy stability.
Scientific Breakthroughs Driving Performance:
▸ Theory Innovation
Quantum-Limit Photonics: Multi-wavelength laser absorption spectroscopy
Entropy-Compensated Algorithms: Self-correcting for oil degradation effects
▸ Structural Innovation
Hermetically-Sealed Optics: IP66-rated gas/electronics separation
Vibration-Immune MEMS: Replaces failure-prone mechanical choppers
1. Revolutionary Dual-Chamber MEMS Architecture
Double-sided separation isolating gas measurement from electronics
MEMS-IR light source with frequency modulation (eliminates mechanical chopper noise)
Two-stage absorption chambers enabling 0.2ppm trace gas detection
2. Zero-Consumables Operation
No carrier/calibration gases required
Vacuum oil extraction technology
Permanent auto calibration (10-year maintenance-free lifespan)
3. Comprehensive Gas Analytics
Simultaneous quantification of 9 gases (H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, O₂, N₂) + trace moisture
Absolute/relative growth rate diagnostics
4. Extreme Environment Performance
-40°C to 70°C operational range (IP66 rated)
60-minute measurement cycles
Mineral/synthetic ester fluid compatibility
| Model | HZ-DGA-900 |
|
|---|---|---|
| Gas Monitoring | H₂,CO,CO₂,CH₄,C₂H₂,C₂H₄,C₂H₆,O₂,N₂,H₂O | |
| Gas Monitoring | Measure Range*（PPM） | Accuracy |
| H₂ | 1 ~ 5000 | 1ppm or ±5% |
| CH₄ | 0.5 ~ 3000 | 0.5ppm or ±5% |
| C₂H₆ | 0.5 ~ 3000 | 0.5ppm or ±5% |
| C₂H₄ | 0.5 ~ 3000 | 0.5ppm or ±5% |
| C₂H₂ | 0.5 ~ 3000 | 0.2ppm or ±5% |
| CO | 5 ~ 5000 | 5ppm or ±5% |
| CO₂ | 20 ~ 10000 | 25ppm or ±5% |
| O₂ | 100 ~ 50000 | 100ppm or ±5% |
| H₂O | 0 ~ 100 | 0.1ppm or ±5% |
| N₂ | 0 ~ 100% | |
| (HC)C1+C2 | 1 ~ 8000ppm | |
| Total Dissolved Combustible Gas (TDCG) | 0.2 ~ 15% | |
| Repeatability | ±3% | |
| Temperature | -40°C ~ +70°C | |
| Humidity | 5 ~ 95% | |
| IP Protection | IP55 | |
| Atmospheric Pressure | 70kPa ~ 110kPa | |
| Communication protocol | MODBUS, IEC61850,DNP3.0 | |
| Stability (Measurement Deviation) | Under the same experimental conditions, the monitoring results for the same oil sample should not deviate by more than 3% (at moderate concentrations). | |
| Data storage | ≥ 10 years | |
| Electrostatic Discharge Immunity | Level 4, ±8kV ~ ±15kV | |
| Resistance to Electrical Fast Transient Pulses | Level 4, ±4kV | |
| Surge (Shock) Immunity | Level 4, ±4kV | |
| Weight | 60 kg | |
| Dimensions | 568*391.2*785.4 mm | |
| Power Supply | AC220 V ±30%, 50Hz ~ 60Hz; AC110 V ±10%, 50Hz ~ 60Hz(Optional) | |
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