AR850超声波测厚仪的详细介绍FEATURES &SPECIFICATIONS一般功能和规格  Vibration MeterAR850Measuring Range1.2-225.0mm（Steel）测量范围1.2-225.0mm（钢）Accuracy±（1%±0.1）mm测量误差Pipe Measuring Lower Limitφ20*3mm（Steel）管材测量下限φ20*3mm（钢）Sound Velocity Range1000-9999m/s声速调节范围Working Frequency5MHz工作频率 Working Temperature Range0-45℃ 工作温度范围Automatic Zero Adjustment√自动校准零点功能Data Store Function√数据存储功能Auto Power Shut Off√ 自动关机功能Low Battery Indication3V±0.2V 低电指示Power3*AAA Ni-Cd or Ni-Hm Battery电源3节AAA镍镉或镍氢电池