RD7200 Utility Hookup Quick Card

Water: Metallic: Direct connect to valve/hydrant Plastic (PVC) w/ tracer wire: Red to tracer wire Black to ground stake No tracer wire: Use sonde Freq: 8 kHz–33 kHz Sewer: Non-metallic: Use sonde in cleanout/camera Metallic (rare): Direct connect Freq: 33 kHz or 512 Hz sonde Electric: Clamp on insulated live cable Alt: Direct connect to sheath/ground (if safe) Check passive power first Freq: 8–33 kHz Gas: Plastic w/ tracer wire: Red to tracer wire Steel main: Direct connect to valve/riser Freq: 512 Hz–8 kHz Fiber Optic: Armored: Clamp around sheath With tracer wire: Direct connect Freq: 512 Hz–8 kHz Chilled Water: Usually metallic: Direct connect to valve/pipe Clamp if insulated Freq: 8 Hz–8 k Reclaimed Water: Plastic w/ tracer wire: Direct connect No tracer wire: Induction Freq: Start low, increase if needed Best Practices: Direct connect if possible Ground stake 10–20 ft away, perpendicular Start low frequency Confirm with multiple sweeps & modes