Process-integrated fluorescence measurement technology for cleanliness and surface control


Reliable and robust

  • Cleanliness inspection prior bonding, painting, coating, welding, hardening, or gluing
  • Layer thickness inspection of corrosion protection oils and lubricants, or primer application before bonding
  • Inline measurement: contact-free, non-destructive, layer thickness sensitive

Advantages 

  • Detection of filmic contamination: contact less, non-destructive, layer thickness-sensitive
  • For process analysis and optimisation
  • Documented process quality
  • Flexible system solution to specific customer control tasks
  • Scalable to multi-sensor system
  • Automation solution combinable with robotics

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For sales outside Germany, please contact our international sales partners.

Facts and data

The system solution SITA clean line CI can be customised to the inspection tasks due to its modular hardware and software concept.

The software SITA ProcessControl uses real-time capable automation components for control and data processing. The system can be customised depending on the requirements using different interfaces for integration in the higher-level process control as well as operating and display devices.

The system solution is easily scalable: from compact systems with one sensor to multisensor systems for complex tasks, e.g. several production lines can be monitored centrally.

For integration we cooperate with your automation and robotics partners. In a joint analysis our SITA application engineers develop the SITA clean line system solution to fit your application.

Line Scan
Continual monitoring of band surface Cleanliness with one or more sensors.

Surface Scan
Detecting the cleanliness profile of part surfaces with an X-Y positioning system.

Free Form Scan
Measuring the cleanliness of part surfaces with a 3D positioning system.

Practical examples

  • Cleanliness inspection of wires, pipes and steel strip prior to coating 
  • Inspection for residues of release agent on aluminium die-cast parts prior to adhesive bonding
  • Inspection of functional surfaces after selective cleaning (laser cleaning, ultra-fine plasma cleaning, CO2 snow blasting, …)
  • Monitoring the primer application prior to lamination of plastic profiles
  • Monitoring the application of corrosion protection oil (quantity, distribution)
  • Inspecting large metal parts prior to coating and printing
  • Determining the distribution of contamination on parts surfaces in the production process

The measuring method uses the characteristic of organic substances to fluoresce. UV light is focused and radiated onto the surface. The contamination fluoresces. The intensity of the Fluorescence increases with the layer thickness of the contamination. The intensity is measured in RFU: Relative Fluorescence Unit.

The lower the measuring value in RFU, the cleaner the surface.

Sensor  
Measuring range (0 ... 2,000) RFU (Relative Fluorescence Unit)
Measuring deviation max. 0.5 % of measuring range
Excitation 365 nm, max. 150 mW
Detection 460 nm*
Measuring distance 4.7 mm*
Diameter measuring point 1 mm*
Sample rate up to 100 Hz
Dimensions (HxWxD) 95 mm x 50 mm x 30 mm
Weight 200 g
Interface RS-485
Power supply 24 V
* bei Standardoptik  
Control  
Real-time capable industrial PC in control cabinet  
EtherCAT-based (Software PLC)  
Hardware modules for input and output interfaces  
Optional touch display  
Control of multiple sensors  
Software  
SITA-ProcessControl Data processing and data visualisation
Sensor calibration
Software modules for sensors and interfaces
Software utilities for data analysis and networked storage  

Changes in the sense of the technical advancement reserved.

Individual accessories for contact-free cleanliness measurement, spacers for various part geometries as well as accessories for device checking and cleaning the sensor optics can be found in our brochure.

Brochure for fluorescence accessories

Publications

  • Filmische Verunreinigungen zuverlässig detektieren
  • Hohe Prozesssicherheit für die Bandbeschichtung - Sauberkeitskontrolle inline
  • Grenzwertbildung für hinreichende Bauteilsauberkeit
  • Automatisierte Teilekontrolle

Request publications


Are you interested or have any questions?

Simply get in touch with us. You can find the contact details of our sales and application department under contact persons.
For support in your country, please see our international sales partners.

Alternatively, send an e-mail to info@sita-messtechnik.de, call us at +49 351 288 53-0 or send us a message using the contact form.

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