Edge sensor for a moving strip of material

摘要: An edge sensor for a moving web of material includes an elongated light source on which is mounted receiver containing active element made plastics with light-absorbing properties. The comprises input surface and at least one exist detector provided. hollow body supported directly in the such way that exposed to from falls web. A is, or can be made, self-supporting without accessories results simpler structure optimal use light. particularly suitable tube supports standard commercial fluorescent housing.