... magnetic flap level meter fitted with magnetic float, using buoyancy principle and magnetic coupling to display the liquid level through the magnetic flap.The level ... shipping containers, sewage treatment, oil, gas, acid, soda etc.Three type of UFZ level meter:1) Standard: visual ... : 3KmEnvironment temperature: -40 ~ 60 degree CExplosion proof level: Explosion proof, d II BT1-4, Certificate number: ...