In many production processes, it is necessary to detect perforations and leaks in injection-moulded products, films or other products like gloves and delicate material for applications in the medical industry and for medical use. Existing methods such as vacuum, pressure or optical control are often not applicable to transparent products or shapes that are difficult to handle. High voltage sparks can be used in a controlled way to detect perforations in these cases.
A spark from a special electrode to a ground reference can be detected by the high-voltage generator and counted or relayed to other connected electronics and evaluated. The detection is non-contact so that there is no contamination of the material during hole-detection. High voltage electrostatic perforation detectors like the small footprint, Perfomaster and the CM 5 high-voltage generator provide the hardware and the software to generate a controlled spark, detect this spark and convert the spark to a pulsed signal for use in other equipment.
In order to detect perforations in a moving material web, this special electrode is equipped with a resistance per emitter. When a perforation passes the electrode, there will occur a controlled spark over.
The Perfomaster provides the hardware and software to generate a controlled spark over, detect this and evaluate the spark over to produce a pulse signal. The pulse signal is available on the output connector and can be used for counting the detected spark-overs and thus perforations.