类型超声波测厚仪品牌香港希玛型号AR850/AR-850测量范围1.2-225.0mm(钢)（mm）显示方式详见说明电源电压3节AAA（V）外形尺寸详见说明（mm）希玛***ARTSENSOR超声波测厚仪AR850FEATURES&SPECIFICATI***一般功能和规格VibrationMeterAR850MeasuringRange1.2-225.0mm(Steel)测量范围1.2-225.0mm(钢)Accuracy&plu***n;(1%&plu***n;0.1)mm测量误差PipeMeasuringLowerLimitφ20*3mm(Steel)管材测量下限φ20*3mm(钢)SoundVelocityRange1000-9999m/s声速调节范围WorkingFrequency5MHz工作频率WorkingTemperatureRange0-45℃工作温度范围AutomaticZeroAdjustment√自动校准零点功能DataStoreFunction√数据存储功能AutoPowerShutOff√自动关机功能LowBatteryIndication3V&plu***n;0.2V低电指示Power3*AAANi-CdorNi-HmBattery电源3节AAA镍镉或镍氢电池)