Ultrasonic level meter / liquid level meter is a kind of level meter that has absorbed the advantages of many kinds of level meters at home and abroad. It is a universal level meter with full digitalization and humanized design concept, which has perfect level measurement and control function. It has perfect level measurement and control function, data transmission function and human-machine interaction function. This product adopts imported industrial-grade chips, digital temperature compensation, etc...related special integrated circuits. With strong anti-interference, can be set arbitrarily upper and lower limit nodes and online output adjustment, and with a field display, the shell uses engineering plastic ABS waterproof shell, the shell is small and quite strong. By the thousand for non-contact detection method, more hygienic than other instruments, can meet most of the liquid level, material level measurement requirements, completely solve the pressure type, capacitance type, float type and other traditional measurement methods brought about by winding, blockage, leakage, media corrosion, maintenance inconvenience and other shortcomings. Therefore, it can be widely used in various fields related to material level and liquid level measurement and control. The product adopts OLED display, high-definition Chinese and English menu interface, the display with self-illumination to make up for the normal debugging in poor light environment, the product adds HART protocol communication support to make up for the shortcomings of the two-wire meter without data output, and can communicate directly with HART field instruments