Ultrasonic sensors for distance measurement

The ultrasonic sensors are available in a variety of housing materials, sensing ranges and output signal forms with digital or analogue switching or a combination of both, to ensure they will suit a wide variety of applications.

One application is for monitoring and automating roll to roll and roll-process applications such as roll thickness measuring and monitoring slack and tears.

elobau ultrasonic sensors can be used to monitor the roll thickness in various sheet processing or printing applications. The sensors can be used either in digital switch mode to trigger when the processing roll is full or depleted. It can also be used with the analogue output to simultaneously get real time readings for what percentage of the roll has been processed in real time.

The fast, digital switching of the ultrasonic sensors can also be used to monitor the slack in the sheet as it is processed from roll to roll. If the sheet exceeds a pre-programmed window for allowable slack in the sheet, a signal is sent to either trigger an alarm or control a motor to adjust the slack.

Another potential benefit of using ultrasonic sensors for slack monitoring is the ability to detect defects in the sheet such as a tear. The ultrasonic pulse will travel through the sheet in the condition of a tear. This abrupt change in distance measurement to the sheet can trigger a stoppage in the process to allow the sheet to be realigned.

Follow the link for further information about ultrasonic sensors from elobau.