SM9541-100C-S-C-3-S

Liquid Level Measurement

Liquid level measurement is required in a variety of applications from water storage to manufacturing control and can often require precise accuracy.

SM9541 系列为硅微结构OEM压力传感器，结合了***的COMS数字信号处理技术及进的压力传感器加工技术生产的具有放大、充分校准、多阶压力修正和温度补偿 双SOP封装的高性能压力传感器。因为SM9541压力传感器输出接口是I2C数字信号或者模拟信号，所以在压力传感器与MCU接口方面可以2种方案来选 择。

电路设计
1）供电电路设计

在工业仪表中通常采用工频220V交流电压，然后220V降压至24V，然后通过高频滤波电路，再经过24V稳压至5V，经过专用的LDO芯片，达到理想的电压。

在本方案中，我们采用了集成的变压器来降压，然后通过RN5RT33AATR芯片降至3.3V。

3）SM9541压力传感器电路设计

SM9541压力传感器基于SMI高稳定性安装在陶瓷基板上的压阻式压力芯片，一个可编程ASIC逻辑器件提供了校准和温度补偿。

SM9541具有放大、校准和温度补偿功能，支持数字温度和校准压力可通过I2C接口，并且输出电压与输入电压成比例。非常优异的多阶压力、温度非线性修正，具备多级满量程温度系数和零点温度系数校准。

相关型号：

SM9541-010C-S-C-3-S  表压1Kpa

SM9541-010C-D-C-3-S 差压1Kpa

SM9541-020C-S-C-3-S 表压2Kpa

SM9541-020C-D-C-3-S 差压2Kpa

SM9541-040C-S-C-3-S 表压4Kpa

SM9541-040C-D-C-3-S 差压4Kpa

SM9541-100C-S-C-3-S 表压10Kpa

SM9541-100C-D-C-3-S 差压10Kpa

SM9541-140C-D-C-3-S 差压13.7Kpa

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