Which device is commonly used to sense the end-of-travel of a machine part and trigger a control action?

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Multiple Choice

Which device is commonly used to sense the end-of-travel of a machine part and trigger a control action?

Limit switch is used to sense the end position of a moving part and trigger a control action. It has a mechanical actuator that is engaged when the part reaches its limit, causing the switch to change its electrical state and, for example, stop a motor or move to the next step in the sequence. This makes it ideal for detecting end-of-travel and initiating a control response. The other options monitor different physical quantities—temperature, flow, or pressure—and aren’t inherently tied to the position of a machine part, so they aren’t typically used for end-of-travel sensing.

Limit switch is used to sense the end position of a moving part and trigger a control action. It has a mechanical actuator that is engaged when the part reaches its limit, causing the switch to change its electrical state and, for example, stop a motor or move to the next step in the sequence. This makes it ideal for detecting end-of-travel and initiating a control response. The other options monitor different physical quantities—temperature, flow, or pressure—and aren’t inherently tied to the position of a machine part, so they aren’t typically used for end-of-travel sensing.

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