Acoustic Sensor

Can Inspection > Online Can Inspection > Leak Inspection > Acoustic Sensor
  • Non-contact inspection
  • Up to 1,500 containers per minute
  • Requires TapTone User Interface for operation. ​

Acoustic Technology

Acoustic technology measures pressure or vacuum in containers with metal closures that do not have a measurable lid deflection. The sensor applies a “tap” to the top of each container lid using an electromagnetic pulse, exciting the closure. The lid vibrates at a natural resonant frequency “tone” based on internal pressure or vacuum. The resultant “tone” signal is sensed by a microphone. The Digital Signal Processor (DSP) produces a real-time signal spectrum and calculates the frequency of the “tone” for that lid which is then compared to user set limits. Containers with a frequency outside these limits are rejected.

A User Interface is required to operate the acoustic sensor. This sensor is compatible with the T550 and PRO Series User Interfaces. Each TapTone User interface is capable of running multiple inspections simultaneously. Other leak, fill level, or vision sensors (model and user interface dependent​) can be added with the acoustic sensor. Consult the Product Catalog for more information.

Power 12 VDC (supplied from user interface)
User Interface Compatible with T550 and PRO Series user interfaces
Operating Speed up to 1,500 containers per minute

Stainless steel, NEMA 4X, IP65

Low-pressure water wash down

Mounting Conveyor mount or RTV pole mount

Leak inspection on glass bottles with metal crowns Missing metal crowns Damaged metal crowns: misapplied, cocked, bull nose, etc. (with Cocked Crown option)