... fuel, milk and bleach agent, conditioning agent and xu to tie, the additive, cleaning agent and alkaline, ammonia and ... Diameter ,Φ15~Φ2000mm or bigger.l High and low temperature, -196°C~+450°C.l High pressure ... gas, steam, ropy mediums or ambulatory mediums in low, normal or high temperature condition.l Total quantity ... 2%.l High sensitivity, able to measure very low velocity below 0.8m/s.l No movable ...