... and interface through interacting of magnetic object between magnetic floaters and show color . UHC type Magnetic double-color Level Indicator applies ... when color overturn that dues to interacting of magnetic object between magnetic floater and displayed color which cause the equal ... .4, 10.0, 16,0MPa4, fluid temperature: -40~4505, fluid viscosity:≤10-4m2/s6, fluid density:≥0.5g/cm7,body or cage ...