... +SOF2, CO, H2S, HF content. Detect incipient faults at the early stage. Gas Flow: 200ml/min Detection Time: 2 mins JH4000 series ... , precise & accuracy ----Detect SF6 electrical equipments fauls at their earliest stage. SO2+SOF2, H2S, CO and HF are produced by SF6 ... . Using JH 4000 series to detect incipientfaults at the earliest stage and avoid power accidents. ----On-line monitor of SF6 electrical ...