Capacitive sensor for detecting non-metallic objects at close range
Detecting – Non-metals
Capacitive sensors detect the height of paper stacks or of other non-metallic materials. This ensures that the printing process runs smoothly. They prevent transport backups and ensure that there is a constant and consistent supply of material. Capacitive sensors require little space and need no additional components such as reflectors.
Photoelectric sensors check the presence of photovoltaic cells or similar objects as they are brought in for processing. In this way they support process continuity. Photoelectric sensors are simply to install and wear-free.
Various technologies can be used for detecting non-metallic objects depending on the application area:
- Capacitive sensors for detecting the presence or level of almost any material and liquid at close range (< 50 mm)
- Photoelectric sensors in diffuse, retro-reflective or through-beam technology for detecting virtually any object over great distances (> 50 mm) using light
- Ultrasonic sensors for detecting virtually any object over greater distances (> 50 mm) using sound