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The GEH201Tiprovides continuous real-time monitoring of hydrogen and other fault gases in transformer oil, enabling predictive maintenance before major failures occur. Mounted directly on transformer valves, the GE H201Ti uses advanced sensor technology for reliable detection of insulation breakdown and arcing conditions. Its robust design and communication capabilities make the GE H201Ti essential for utilities managing critical power transformers.

Model GE H201Ti DGA Online Monitoring Transmitter

Gas Detection Hydrogen (H2), composite gases 0-2000 ppm range

Sensor Type Fuel cell, gas-permeable membrane Continuous oil contact

Accuracy ±10% of reading, ±0.5% typical High precision fault detection

Power Supply 110-240 VAC, 47-63 Hz Universal industrial power

Communication Modbus RTU over RS485 SCADA integration

Analog Output 0-1mA standard, 4-20mA optional Isolated transmitter output

Alarms 2 configurable levels Alert/Alarm + rate-of-change

Operating Temp -40°C to +85°C Harsh substation environment

Dimensions/Weight 178mm dia x 180mm, 5.6 kg Valve-mounted compact design

Enclosure NEMA 4X / IP66 Weatherproof installation

Select appropriate transformer valve location for GE H201Ti mounting (upper oil valve recommended).

Shut down transformer and drain oil to valve level before installing GE H201Ti.

Screw GE H201Ti onto valve fitting and ensure proper oil manifold flooding.

Connect power supply and RS485 communication wiring to GE H201Ti terminals.

Configure alarm setpoints and Modbus address via GE H201Ti front panel keyboard.

Restore transformer operation and verify GE H201Ti baseline gas readings stabilize.

Mount GE H201Ti in accessible location for maintenance while avoiding direct rain exposure.

Use conduit for GE H201Ti power and signal wiring in high-lightning areas.

Ensure GE H201Ti sensor fully contacts flowing oil (minimum 0.5 GPM circulation).

Verify oil temperature compatibility before GE H201Ti energization.

GE H201Ti performs automatic self-test every 15 days; check service alarms monthly.

Clean GE H201Ti oil manifold filter annually during transformer maintenance.

Download GE H201Ti trend data quarterly using GE Perception software.

Replace GE H201Ti sensor after 5-7 years or when self-test indicates degradation.

Calibrate GE H201Ti zero point yearly by briefly closing oil supply valve.

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