Step 1: Understanding the Concept:
Pharmaceutical production lines use several dedicated machines: fillers, sealers, sorters, and weight checkers, each named for a specific job. The question wants the one that checks weight without physically contacting the product.
Step 2: Key Fact:
Rotoweight is the name for an in line checkweigher that senses each unit's weight through reflected energy as it travels on a conveyor. Being non contact is what lets it check every unit at production speed without slowing the line.
Step 3: Detailed Explanation:
Rotofill is used for filling containers with a set amount of product, not for verifying weight afterward.
Vericap-1200 is a capsule filling and sealing machine.
Rotosort separates units by physical criteria such as size, not by sensing weight.
None of these three involve a reflected energy sensing method.
Step 4: Final Answer:
The equipment that measures weight variation using reflected energy is Rotoweight.