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Ultrasonic sensor - standingA special sonic transducer is used for the ultrasonic proximity sensors, which allows for alternate transmission and reception of sound waves. The transducer emits a number of sonic waves which are reflected by an object, back to the transducer. After emission of the sound waves, the ultrasonic sensor will switch over to receive mode. The time elapsed between emitting and receiving is proportional to the distance of the object from the sensor. Ultrasonic proximity sensors enable the detection of different objects irrespective of color and transparency. Both current and voltage outputs of the proximity sensors, are proportional to the distance to the target. The user can change the slope of the output curve using the built-in potentiometer or teach mode button. By doing so they are able to define the required resolution. Sensor versions, which have a built-in A/D-Converter, generate output signals divided into discrete steps. Applications having long cable runs where there might be EMI or RFI interferences should use sensors with an analog current output. The analog output can be set to either rise or fall proportional to the target distance. Specifications
Operating InstructionsTeach-in locking 5 min. after every power-up, respectively after the end of the last Teach-in process. Adjustment of 0…10V operation range
Adjustment of 10V…0V operating range
Resetting to original factory settingsPerforming steps 1 and 2 above without an object within the sensor's range, or holding the button down for more than 6 seconds, will automatically restore the original factory settings. Fast flashing of both LEDs indicates successful completion of the resetting. Last modified: 2004-08-31 Mark Stephenson |