主题：美国材料实验协会制定(ASTM D6760)的超声波检测仪器标准

Item Description Requirement 4.2 Probe Pulsesrp探头脉冲 Generated frequently连续发射 4.2 Output signal storage信号转储 To be saved可以 4.3 Signal & result presentation信号结论分析 Signals modulated, signals (arrival & energy), processed and presented信号可调,声学参数(声时,能量),采取过程重现 6.3.1 Probes探头 Test within 100mm of hole bottom可检测到桩底以上100mm 6.3.1 Probes探头 Pressure test to 150% of max test depth水压力满足最大测试深度压力的150%. 6.3.2 Transmitter发射探头频率 >30 kHz 6.3.3 Receiver接收频率 Matched to transmitter 6.3.5 Cables电缆 Temperature range 温度范围: -40 - 80度 6.3.5 Cables电缆 Durability抗疲劳 6.3.6 Depth accuracy Slippage滑动 6.3.6 Depth accuracy深度 Known at all times全程监控 6.3.6 Depth accuracy深度误差 Within 1%控制在1%范围内 6.4.1 General design Rugged 6.4.1 Power DC power 6.4.1 Signal sampling By depth or time 6.4.1 Signal gain Adjustable 6.4.2 Recording Min 12 bit A/D resolution 6.4.2 Sampling frequency采样频率 >250,000 Hz 6.4.2 Data storage Signals and information 6.4.4 Data display Display raw signals 6.4.4 Data display Display processed result 6.4.4 Data display Optional printer 7.5.3 Depth reference Zero values 7.5.6 Pulling speed Maximum rate 7.5.6 Pulling speed No loss of data 7.5.6 Probe levels Parallel or variable 7.8.1 Printed output Graphical 7.8.2 Printed output Numeric

国产仪器基本上也能达到这个标准