描述
压力传感器是检测压力信号的，一般指一次表，压力变送器是把一次表和二次表合在一起的，并把检测到的信号转换成标准的4-20、0-20毫安或0-5V、0-10V的信号，你可以这样形象地理解：传感器是把传过来的“感觉”一下，变送器呢不仅感觉到了，而且“变成”标准的信号再“送”出去。压力传感器一般是指将变化的压力信号转换成对应变化的电阻信号或电容信号的敏感元件，如，压阻元件，压容元件等。而压力变送器一般是指，压敏元件与调理电路共同组成的测量压力的整套电路单元，一般能直接输出与压力成线性关系的标准电压信号或电流信号，供仪表、PLC、采集卡等设备直接采集。
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