MEASUREMENT LEVEL AND DENSITY TO LIQUIDS BY MEANS OF SENSOR OF PRESSURE
Hydrostatic flow-meter consisted of sensors with greatly idle time design and algorithms of data processing, is considered. The system under investigation consists of two sensors of the absolute pressure, installed on miscellaneous level. The principle of the action of the sensor is founded on the directly proportional dependencies of the pressure of the liquid column on its height. The maximum-likelihood method is used for estimation of density and level of liquids in tank. Accuracy of parameters extended by least square recurrence method. Is it assumed that density and level change linearly during short period of time.