Static pressure or liquid level sensor

The sensor works on the principle of hydrostatic pressure measurement. It generally selects silicon pressure sensor to convert the measured pressure into an electrical signal, which is amplified by an amplifier circuit and compensated by a compensation circuit, and then output in a 4-20mA or 0-10mA current mode.

But in the field of sensor equipment, my country's industry is currently unable to meet the needs of market development. The person concerned said that the current domestic sensor chips have been used on a large scale, such as bus cards, hotel room cards, and mobile phone near-field payment fields. However, high-end chips such as high-frequency and ultra-high-frequency chips, such as labels for wine and clothing, are still lacking compared with foreign countries, and further technological breakthroughs are needed. China has made some progress in low-end temperature and humidity sensors, but in terms of relatively high-end sensors, especially the high-end micro-electromechanical systems that integrate sensing, transmission and processing into small-size chips, compared with foreign countries There is still a big gap. The obstacles to the development of the sensor field will also cause considerable trouble for the promotion of the Internet of Things industry in my country for a period of time in the future. If foreign products are used, there may be many concerns about safety.