.online
DISSOLVED GAS & MOISTURE ANALYSIS INSTRUMENTS
for HV transformer conditional monitoring system
TRATECH.two
H2, H2O,
OilTemperature
- Gas sensor based on a metal-insulator-semiconductor capacitive structure
- Limit detection for hydrogen concentration in the transformer oil is 1ppm
- Maintenance free for the lifetime
Hydrogen is the universal fault gas, Detecting Mineral oil decomposition , Termal Faults , Partial & Arching discharge
Technical Data
Hydrogen
Measurement range (in oil) | 0 ... 5000 ppmv |
Accuracy in oil temperature range -20 ... +60 °C | ±20 % or ±25 ppmv (whichever is greater) |
Repeatability | ±10 % of reading or ±15 ppmv |
Minimum detection limit | 25 ppmv |
Typical long-term stability | 3 % of reading / year |
Cross sensitivity to other gases | < 2 % (CO2, C2H2, C2H4, CO) |
Response time | 63 % of full response: 2.5 h (whensensor is not in reference cycle)90 % of full response: 17 h |
Warm-up time | Warm-up time 2 h, 12 h for full specification |
Sensor | Catalytic palladium-nickel alloy film solid-state sensor |
Moisture in Oil
Measurement range (in oil) | 0 ... 100 %RS |
Accuracy including non-linearity, hysteresis, and repeatability | 0...90%RS ±2%RS 90 ... 100%RS ±3%RS |
Response time (90 % of full response at +20 °C in still oil) | 10min |
Sensor | HIH8131-021-001 |
Web Adapter
Equipment designed and manufactured TRATECH.online , Lisbon, Portugal 2022 , tratech.online@gmail.com
