... , H2S, CO,dew point if SF6 circuit breaker, instrument transformer, GIS and transformer inside the electrical equipment happen ... . Accuracy:CompositionErrorSO2+SOF2, H2S and HFWith measurement value ≤2µl/L, error ≤±0.1µl/L;With measurement ... value2µl/L, error≤±0.2µl/LCOWith measurement value ≤10µl/L, error ... 0.1µl/L, whichever is greater; CO≤±2 or ±0.5µl/L, whichever is greater; HF ...