Online Dissolved Gas Analysis system (900)

Online DGA (PAS) Monitoring System

Next-Generation Transformer Monitoring – Ultra-Precise, Zero Maintenance

The Hertzinno HZ-DGA-900 is a next-generation high-precision online dissolved gas analysis system, built to deliver unmatched sensitivity and reliability in transformer oil monitoring. Featuring MEMS-IR technology and a dual-chamber design, it simultaneously analyzes 9 key gases and moisture content—empowering asset managers with deeper insights and faster fault detection.

✅ Comprehensive Gas Analysis – Detects H₂, CO, CO₂, CH₄, C₂H₂, C₂H₄, C₂H₆, O₂, N₂, and trace moisture in a single operation.
✅ Ultra-Sensitive Dual-Chamber Design – Enables trace gas detection as low as 0.2ppm with two-stage absorption.
✅ Zero Maintenance for Over 10 Years – Fully autonomous with no carrier or calibration gases required.
✅ Fast, Accurate Monitoring – <1 hour measurement cycle with auto-calibration for long-term stability.
✅ Web-Based Remote Access – Monitor and analyze data easily via browser-based software, server-ready.
✅ Built-In Duval Triangle Analysis – Enables reliable fault classification and decision-making.

🔧 Built for Harsh Environments:

• Operating Range: -40°C to 70°C

• IP55 Protection | ESD & Shock Immunity Level 4

• Compatible with Mineral Oil and Synthetic Ester Liquids

• Max Oil Pipe Length: 20m | Sampling Volume: <100 ml

• Standard Accessories Included: 2x 10m Oil Pipes, 1x 20m Power Cable, 2x Flanges

📡 Supports Multiple Protocols:

• Modbus, IEC61850, DNP3.0

• RS485, RJ45, 4G, or FC Connectivity

• Relay Alarms & 24V DC Output Support

With a 5-year standard warranty, advanced gas detection capabilities, and a design that separates the gas analysis and electronic structures for added reliability, the HZ-DGA-900 is built to exceed expectations for modern substation and grid monitoring.

Smarter Diagnostics. Total Coverage. No Compromises.

Manufacturers Datasheet: Download