What is NOT a requirement for the sampling device when working with a belt stream?

The choice indicating that the sampling device must overflow to prevent jams is not a requirement for a sampling device when working with a belt stream. The primary function of a sampling device is to obtain a representative sample of the material without disrupting the flow excessively or creating jams. While designing devices to minimize material clogs can be important, it is not a mandatory requirement for the device itself to overflow. The focus is on effectively cutting the stream, ensuring it can handle the forces exerted by the material, and preventing waste during the sampling process.

When conducting sampling, the aim is to obtain accurate and effective samples, which means that managing the material flow and obtaining the entire sample are crucial aspects. The design should allow for smooth operation without necessarily incorporating an overflow feature as a requirement.