超聲波流量計的缺點主要是: 可測流體的溫度范圍受超聲波換能鋁及換能器與管道之間的耦合材料耐溫程度的限制，以及高溫下被測流體傳聲速度的原始數(shù)據(jù)不全。中國只能用于測量200℃以下的流體。另外，超聲波流量計的測量線路比一般流量計復(fù)雜。這是因為，一般工業(yè)計量中液體的流速常常是每秒幾米，而聲波在液體中的傳播速度約為1500m／s左右，被
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