SENSING · TESTING · GAUGING

Upgrades for Can Body Light Testers

ULTP - Universal Light Tester Package

high speed detection of pinholes, split flanges and cracked domes


  • BENEFITS
  • Improved reliability and stability
  • No degradation of sensitivity over time (single solid state electronic detector)
  • Reduced maintenance and running costs
  • Increased speed capability—3600cpm
  • Improved machine information
  • Fault diagnostic facilities
  • Easy set-up and operation
Existing quartz-halogen systems can be upgraded with an LED lighting array

LED upgradeSencon light testers, which are supplied on the latest neckers, provide high speed light inspection to detect pinholes, split flanges, and cracked domes.

Rejection rates of 100% have been achieved on cans with 0.002 inch (0.05 mm) pinholes. Rejection of cans is provided by an air jet on the can guide, which is controlled by Sencon's high speed solenoid driver technology.

A solid state sensor is used to detect leaks. LED lighting offers low maintenance, high performance illumination. Existing quartz-halogen systems can be upgraded with an LED lighting array and a more sophisticated detector system.

Updates for single detector can light testers

Analog photomultipliers found on some single detector light testers (such as Reynolds RT5 or RT6*) degrade over time, requiring constant adjustment or regular replacement. Sencon can replace them with a solid state electronics pack and a simplified lighting system. This delivers greater stability with equivalent detection levels, and no need for regular adjustments as the light detector does not become less sensitive over time. Maintenance is minimized as lamp replacement and cleaning of the detector lens are the only scheduled maintenance tasks.

*Reynolds RT5 and RT6 trademarks are owned by the Stolle Machinery Company LLC

LED upgrade

High intensity halogen lamps which are supplied as standard on older installations have proved to be simple and reliable. However, LEDs are better matched to the sensitivity of the detectors than broad spectrum halogen light. So installing an LED lighting array improves the sensitivity of the system. Using solid state LED lighting should also reduce the frequency of maintenance required, further minimizing downtime. Built in reflectors ensure that illumination is evenly distributed around the can, thereby removing any need for an infeed lamp. The LED lighting array is available in 3x3 or 3x4 configuration which allows greater flexibility with different can sizes.

LED lighting arrays
  • benefits of LED upgrade
  • Increased detection sensitivity to find smaller defects
  • Reduced maintenance frequency - further minimizes downtime
  • 30% reduction in energy by lamps
  • Flash control to avoid the sensor being swamped by excess light from a defective can
  • No need for infeed lamp
PLEASE NOTE: The LED upgrade requires the host ULTP system to be brought up to the latest specification. For most systems this represents a major overhaul. A range of options is available for the LED upgrade, depending on the system already installed. Contact Sencon for details.

"Flash Control" for improved system efficiency

The faster on-off switching possible with LEDs has enabled the inclusion of a proprietary "Flash Control" function that switches off the LEDs if the detectors are flooded with too much light due to a damaged can or an empty pocket. This prevents the detectors from being blinded, eliminating the need for recovery time before inspecting the next can.