较早公告：
西门子超声波流量计北京*中 1、西门子 精密功能检查
西门子 精度等级和功能根据测量要求和使用场合选择仪表精 度等级，做到经济合算。比如用于贸易结算、产品交接和能源计量的场合，应该选择精度等级高些，如1.0级、0.5级，或者更高等级; 用于过程控制的场合，根据控制要求选择不 同精度等级;有些仅仅是检测一下过程流量，无需做精确控制和计量的场合，可以选择精度等级稍低的，如1.5级、2.5级，甚至 4.0级，这时可以选用价格低廉的插入式超声波流量计。
2、西门子 可测量的介质
西门子 测量介质流速、仪表量程与口径 测量一般的介质时，超声波流量计的满度 流量可以在测量介质流速0.5—12m/s范围内 选用，范围比较宽。选择仪表规格(口径)不一 定与工艺管道相同，应视测量流量范围是否 在流速范围内确定，即当管道流速偏低，不能满足流量仪表要求时或者在此流速下测量准 确度不能保证时，需要缩小仪表口径，从而提 高管内流速，得到满意测量结果。
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西门子超声波流量计北京*中
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