本参考设计是液位测量和控制系列的第一部分。第 1 部分介绍了现代压力传感器之间的差异，并强调了微机电 (MEMS) 温度补偿硅压力传感器的最新进展带来的好处。这些传感器现在价格合理，有多种封装可供选择，非常适合各种精密传感应用，包括液位测量。然后，本文介绍了一种经济高效、低功耗的液位测量数据采集系统 (DAS)，该系统使用补偿硅压力传感器和高精度 delta-sigma ADC。本文将解释如何选择补偿硅压力传感器。它将建议系统算法，分析噪声，并提供校准思路，以提高系统性能，同时降低复杂性和成本。

This reference design is the first in a series on liquid-level measurement and control. Here in Part 1, differences among modern pressure sensors and emphasizes the benefits of recent advances in microelectromechanical (MEMS) temperature-compensated, silicon pressure sensors are described. Now reasonably priced and available in a variety of packages, these sensors are attractive for a wide variety of precision sensing applications, including liquid level measurements. The document then describes a cost-effective, low-power, liquid-level measurement data acquisition system (DAS) using a compensated silicon pressure sensor and a high-precision delta-sigma ADC. The article will explain how to select the compensated silicon pressure sensor. It will suggest system algorithms, analyze noise, and offer calibration ideas for improving system performance while reducing complexity and cost.