Working principle: Based on the principle that the hydrostatic pressure is proportional to the height of the liquid, the static pressure generated by the pressure sensor is measured, which is converted into an electrical signal, and then converted into a standard output signal by the signal processor, such as 4-20mA, 0-10V, etc., so as to calculate the liquid level height.
It is generally composed of two parts: sensor and transducer. The sensor contains a pressure sensitive element, which is responsible for sensing the change of liquid pressure and converting it into an electrical signal; The converter converts the sensor's electrical signal to a standard output signal for remote monitoring and data recording.
Functional advantages:
Accurate measurement: The use of hydrostatic pressure and height is proportional to the principle, with high-precision pressure sensor, accurate feeling of pressure changes, signal processing and conversion, measurement accuracy can reach 0.25%FS or even higher. Stable and reliable: subject to environmental interference, the annual stability is usually less than 0.1%FS, and it can work statically in complex environments for a long time. Easy installation: simple structure, integrated design, put the sensor probe into the liquid, connect the signal transmission line to complete the installation. Widely applicable: can measure a variety of liquids, such as water, sewage, oil, acid lye, etc., can be used in different containers and environments, measuring range 0 ~ 0.3m to 0 ~ 120m, medium temperature -40℃ to 150℃. Communication diversity: Support 4G, NB-IoT and other communication methods, can upload data to the cloud server or local platform, to achieve remote monitoring. Strong data processing: built-in storage function, automatic storage of large amounts of data, to ensure data integrity; Some with HD display, easy to read and local configuration. High protection: mostly stainless steel, protection grade up to IP68, high pressure resistance, corrosion resistance, ventilation cable balance pressure, to ensure stable operation of equipment. Good integration: It can be connected with PLC, DCS and other automatic control systems to achieve automatic liquid level regulation and remote monitoring, and can also be combined with Internet of Things technology to achieve remote data transmission and sharing.
