RF Sensing Machine Safeguards ...

PUB-3000, Sec 5.3 Machine Safeguarding, REV'D 12/2001

... "A radio frequency (capacitance) sensing device uses a radio beam that is part of the machine control circuit. When the capacitance field is broken, the machine will stop or will not activate. Like the photoelectric device, this device must only be used on machines that can be stopped before the worker can reach the danger area. This requires a friction clutch or other reliable means for stopping. " ...