... instrument can rapidly detect SO2+ SOF2, H2S, CO, HF decomposition products and also able to carry out the dew-point test. ... , H2S, CO and HF if SF6 circuit breaker, instrument transformer, GIS and transformer inside the electrical equipment happen ... carry out the dew-point test at the same time so as to provide the more complete and efficient ... , SF6 live steam quality monitor and toxicity test.