The inline fluorescence measurement technology SITA clean line CI is optimal for a continual cleanliness control in cleaning processes. Slight traces of contamination such as oils, greases, cooling lubricants or surfactants cause quality defects in following surface treatment and surface coating processes leading to higher costs. A regular inspection of part surfaces ensures that the required cleanliness levels are maintained. Further actions such as dosing up the cleaning agent components or bath care can be initiated immediately if the part cleanliness decreases.

The measuring system SITA clean line CI can be adjusted to each customer’s unique inspection tasks.

Used with an industrial PC or an SPS with touch panel, the central control unit of the SITA clean line CC allows process-specific system solutions to be realized.

Based on a combined analysis of process and plant, SITA application engineers develop the SITA clean line system solutions to be adapted to each customer’s specific set of criteria.

Typical contamination in industrial manufacturing processes such as oils, greases or surfactants fluoresce when being excited by ultra violet light. The measured intensity of fluorescence radiation increases with the thickness of the contamination layer.

An integrated UV-LED stimulates the excitation of the fluorescence. A photo-diode measures the intensity of the resulting fluorescence radiation. The calibration of the cleanliness takes place on reference parts defined as being 100 % clean.

Reference surfaces with a known contamination amount are used to determine limit values of reliable cleanliness.

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 example: inspection of band steel

High cleanliness standards for the coating of band steel assure a high coating quality in the process. SITA clean line CI measures fluorescence continually and detects even the smallest amounts of contamination.

The cleaning process can immediately be interrupted when cleanliness values fall below defined limit values.

Here you can find application examples [..]