超声波流量计的缺点主要是: 可测流体的温度范围受超声波换能铝及换能器与管道之间的耦合材料耐温程度的限制，以及高温下被测流体传声速度的原始数据不全。中国只能用于测量200℃以下的流体。另外，超声波流量计的测量线路比一般流量计复杂。这是因为，一般工业计量中液体的流速常常是每秒几米，而声波在液体中的传播速度约为1500m／s左右，被
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