前言在过程检测系统中,物位测量占有重要地位。这一领域一直是最薄弱的环节之一,主要因为工业过程中被测介质的千差万别,许多新的复杂的难题不断出现,致使当今最为广泛应用的差压检测法和一些传统的测量方法,例如电容、电感、电阻、浮球、浮筒、振动型、重 Preface In the process of testing systems, level measurement plays an important role. This area has been one of the weakest links, mainly due to the vast diversity of measured media in industrial processes, and the emergence of many new and complex problems that have led to the most widely used differential pressure test and some of the more traditional measurement methods such as Capacitance, inductance, resistance, float, buoy, vibration type, weight