... oil; 4. OEM, ODM. Model: BI-01Product Name: Magnetic Level IndicatorMedium Density: ≥0.5Kg/LMedium Pressure: ≤5. ... the liquid level, the magnetic color chip is turned over due to the magnetic field and the color changes ... level measurement, level measuring instrument, level transducer, magnetic level meter, magnetic level indicator, pressure transmitter, pressure sensor, temperature transmitter ...