GE Hydran 201Ti Continuous Dissolved Gas Analysis (DGA) Monitoring Equipment
The GE H201Ti (Hydran 201Ti) is a compact, continuous Dissolved Gas Analysis (DGA) monitor for transformer insulating oil, developed by GE Grid Solutions. As a cost-effective early-warning device (Mark IV version), it adopts fuel cell sensor technology to measure composite fault gases in real time, serving as the first line of defense for power transformers. It requires no pumps or extra piping, features easy single-valve installation, and is widely deployed globally with over 30,000 units in operation.

Specifications
| Parameter | Description |
|---|---|
| Product Type | Continuous Dissolved Gas Analysis (DGA) Monitor |
| Model | Hydran 201Ti (H201Ti), Mark IV version |
| Sensor Technology | Fuel cell (composite gas or H₂-only sensor) |
| Measured Gases | H₂ (100% response), CO, C₂H₂, C₂H₄ |
| Measurement Range | 0–2000 ppm (H₂ equivalent) |
| Accuracy | ±10% of reading ±25 ppm |
| Response Time | 90% step change in ≤10 minutes |
| Display | Local LCD (real-time ppm values) |
| Outputs | 4–20 mA analog; isolated RS-485 (Modbus/Hydran) |
| Alarms | 2 levels (warning/critical); configurable by ppm or rate-of-change |
| Power Supply | 115–230 V AC, 50/60 Hz (global compatibility) |
| Dimensions (W×H×D) | 17 × 10 × 8 in (432 × 254 × 203 mm) |
| Weight | 25 lbs (11.3 kg) |
| Installation | Direct mount on a single transformer oil valve (no extra piping/pumps) |
| Certifications | CE, UL, RoHS compliant |
| Warranty | Standard 2 years; optional 5-year sensor warranty |
Key Functions
- Continuous DGA Monitoring: 100% responsive to hydrogen (H₂, general fault gas) and sensitive to carbon monoxide (CO, overheated paper), acetylene (C₂H₂, arcing), and ethylene (C₂H₄, overheated oil), covering all major transformer failure root causes.
- Early Fault Warning: Provides a single “Hydran gas value” (ppm) per IEEE C57.104, with two configurable alarm levels (warning/critical) based on gas concentration or rate-of-change.
- Maintenance-Free Operation: No moving parts, pumps, or on-site calibration required; dynamic oil sampling via a permeable membrane ensures long-term reliability.
- Local & Remote Connectivity: Features an LCD display for real-time ppm readings, 4–20 mA analog output, and isolated RS-485 digital communication (Modbus/Hydran protocols) for remote monitoring and trending.
- Robust Design: Compact, weatherproof enclosure with wide voltage input, suitable for harsh outdoor substation environments.


Applications
- Power Generation (Thermal, Nuclear, Renewable)
- Transmission & Distribution Grids
- Oil & Gas (Pipeline & Refinery Transformers)
- Heavy Industry (Steel, Chemical, Mining)
- Data Centers & Critical Infrastructure
Recommended Similar Products (GE Hydran & DGA Series)
- Hydran M2-X: Advanced dual-sensor DGA monitor with separate H₂ and CO sensors, offering higher accuracy and independent gas trending for critical transformers.
- Kelman DGA 900: High-performance multi-gas DGA analyzer (measures 9+ gases) with built-in fault diagnosis, designed for large power transformers and grid-critical assets。
- Transfix DGA 500: Compact, cost-optimized DGA monitor for distribution transformers, featuring single-gas (H₂) monitoring and simplified communication for basic fleet applications。
- Intellix BMT 300: Enhanced transformer health monitor combining DGA, temperature, and moisture-in-oil sensing, with edge computing for on-site fault analytics。










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