... Ø Clamp current measurement frequencies:500Hz, 1kHz, 8kHzØ Sensor frequencies: 1kHz, 8kHzØ Grounding fault locate frequencies: 8kHz compound frequency Pipe ... ;Clamp coupling output;Radiation output Output frequencyPipe detecting frequencies:500Hz,1kHz,8kHz,33kHz,66kHz,93kHz Fault locating ... frequencyOutput power500Hz,1kHz,8kHz,33kHz,and fault locating frequencies: Max 10W,four grands adjustable,2.5W,5W ...