Presence Sensing (Machine Guard)
Presence Sensing (Machine Guard) : A guard which, without placing a physical barrier between the operator and the dangerous parts of the machine, senses the approach of a body or part of a body and, ensures that: (a) while any part of an operator's body is within the sensing field of the device, dangerous motion cannot start; and (b) should any part of the operator's body enter the sensing field of the device while the machine is operating, all dangerous motion shall stop before the operator can reach the dangerous parts
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