The DTR340 is a diode array detector. In association with the EMR LED light emitter, it is able to detect the weld hole made in order to locate the linking weld between two strips.
The Weld Hole Detector DTR340 consists of a lens, a linear diode array, and a processing unit.
The Emitter EMR consist of an array of high power red LED.
The DTR Weld Hole Detector has been designed for heavy industry with :
The DTR sensor detects the light emitted by an EMR through the weld hole. Sensor and emitter are fixed perpendicular to the line axis in order to take the lateral deviation of the strip into account.
The following conditions have to be held for a proper detection:
The figure bellow shows the different possible position of the hole: