... flow such as metallurgy, paper making, petrochemical, electric power, irrigation works, city water supply and drain etc ... technology, patent No. ZL200420021696.8, ZL200420021698.7External power driving unit is not necessary for big sizeDismountable electrode (optional ... , HART, Profibus-DP etc. optionalProtection class: IP67, IP68 (immersion type)Media temperature: -25 ~ 130, -25 ~ 180 (optional)Ambient ...