The PRO Series Dual Sensor Compression Twin Belt (TB) sensor is specifically designed for pouch inspection. The patented technology is designed to identify and reject leaking pouch style containers caused by defects in the seams or fitment closure.


  • Belt Speed 25ft-350ft/minute (7m-106m/min)
  • 1,500 containers/pouches per minute
  • maximum
  • Variable speed belts
  • 36in to 76in conveyor height
  • 230VAC or 460VAC power
  • 15psi pressure sensor calibration
  • NEMA 4X, IP65 Washdown
  • 304 stainless-steel

How it works

The TapTone PRO Series Pouch Inspector system finds and rejects leaking and damaged pouches at production line speeds up to 200 feet per minute. The patented system is designed with dual pairs of parallel belts suspended over the customers’ existing conveying system. As the pouch passes through the system, the dual pairs of parallel belts apply force to the sidewall of the pouch.

This action increases the internal pressure of the pouch, evacuating a small amount of product out any leak areas, thus allowing a comparative measurement to be taken at both the infeed and the discharge of the system. Comparing the pouch to itself eliminates typical variations seen in the production environment (Fill Level, Product Temperature, and Seal width).

Utilising advanced DSP technology the TapTone PRO Series controller analyses each of the individual sensors as well as their comparative measurement and assigns three resulting merit values to each pouch. If any merit value is outside of the acceptable range, a reject signal activates a remote reject system.


  • Stand-up Pouches
  • Micro Leak detection in flexible containers
  • Leak Detection for Closures Plastic Fitment
  • Induction Seal Leak Detection for Containers


Operating speed
up to 1,500 Containers per minute
Conveyor height
36in to 76in conveyor height adjustment
Container/pouch size range
4in (101mm) minimum container/pouch height
17in (432mm) maximum container/pouch height
5in (127mm) maximum container/pouch width
Shaft encoder
Stainless steel/IP65 Rated
AC line voltage
230 VAC, 1 phase (standard) or 460 VAC, 3-phase (optional)
Reject outputs
Up to two Segment8 Soft Reject outputs per machine
Multiple sensor capability
Integrates up to four primary inspection PRO Series sensors (Dual Compression, Proximity, Vision, X-ray)
Material and control enclosure
Wash down: fully sealed to withstand wash down
Enclosure environmental rating: stainless-steel NEMA 4X IP65 rated
Human interface: 12in colour, touchscreen PC, IP 65 rated