表接头中心距 130 mm 项 目 Item单位Unit型 号 ModelJ4C公称流量Nominal flow-rate(Qn)m3/h4最大流量Maximum flow-rate(Qmax)m3/h6最小流量Minimum flow-rate(Qmin)m3/h0.040工作压力范围Working pressure rangekPa0.5-30工作环境温度Working environment temperature℃-20-50总压力损失平均值Average value of total pressure lossPa 160耐久性能 enduranceh2000基本误差限Maximum permissible errorQmin Q 0.1Qmax% 30.1Qmax Q Qmax% 1.5最大累计读数Max cumulative reading figuresm399999重量 Weightkg1.8表接头螺纹Meter fittings joint threading M30 2表接头中心距Meter fittings central distancemm130