Product Usage

SITA CleanoSpector is a surface cleanliness meter developed by the German company SITA, which can measure the cleanliness of metal surfaces. This method ensures the cleanliness of metal components that require deep processing such as surface coating and surface treatment. This device detects pollutants such as oil stains, grease, cooling lubricant wax, and organic dust on metal surfaces through fluorescence method. The test results can provide reliable information for optimizing the entire cleaning process, including cleaning time, chemical process, and soaking temperature. Ensure the high quality requirements of the product by controlling the quality of metal components during the cleaning process.

Characteristic features:

Cleanliness testing of metal surfaces

△ One click operation

△ High reproducibility

The measurement results are not affected by the ambient temperature

△ Automatic calibration function, calibration can be completed on a clean metal surface

The sensor design is simple and the testing is stable

△ Compact and portable, suitable for laboratories or factory workshops

Technical Specifications：

△ Measurement method: Test by fluorescence emitted by UV light source

△ Measurement value: Cleanliness (%) represents the degree of cleanliness of the surface

△ Detectable pollutants: oil stains, grease, cooling lubricants, wax

△ Calibration: Automatic calibration for cleaning metal surfaces

Reference surface: can be calibrated on different surfaces (steel, copper, aluminum, gold, etc.)

Number of measurement points: The number of measurement points can be adjusted according to the component being measured

△ * Measurement spacing: 4mm

△ Power supply: rechargeable battery or power adapter

△ Weight: 320g (including sensor and handheld accessories)
--------------------------------------------------------------------------------

SITA Surface Cleanliness Meter - Measurement Principle

The CleanoSpector surface cleanliness meter emits a UV light source with a wavelength of * to detect impurities on the metal surface, while the sensor on the other side detects fluorescence intensity, which depends on the number of impurities at the test point. The SITA surface cleanliness meter uses the confocal principle and with the help of a complete UV light source and sensor, the SITA cleanliness meter can achieve the highest sensitivity and compare with numerous laboratory systems, while the probe is also easy to place. In addition, the surrounding light sources, surface temperature, and surface roughness will not affect the test results. The result output is expressed as a percentage, with 100% representing a clean surface.

The fluorescence generated after ultraviolet irradiation is a special form of cold light. When the electrons in fluorescence analysis absorb photons and their energy increases, but this state is not stable, it will immediately return to its initial state and release the absorbed energy again, emitting fluorescence. Due to the conversion of some energy into heat, the energy of the emitted light decreases and the wavelength becomes longer. Due to the fluorescent properties of impurities, the SITA surface cleanliness detector can detect impurities by illuminating with an LED lamp containing ultraviolet light waves. The photodiode in the instrument probe is responsible for measuring the intensity of UV fluorescence. The stronger the UV fluorescence, the greater the degree of pollution, and vice versa, the cleaner it is.

The parameters of the SITA surface cleanliness meter have been designed to be most suitable for the stains and dirt generated during regular cleaning processes. For special inspection requirements, it may also be suitable for the wavelength of LED. Due to the strong self fluorescence characteristics of organic matter excited by UV light, the instrument can detect impurities such as oil, grease, and residual surfactants. In addition, it may also be used to inspect for corrosion or wax layers of known thickness.

The following figure shows the fluorescence spectrum of the cooling lubricating oil excited at a wavelength of 365nm. Due to its strong fluorescence intensity at a wavelength of 460nm, the SITA surface cleanliness meter is the easiest to detect this lubricant contamination at this wavelength.

The measurement principle of SITA surface cleanliness meter is confocal method, which means that the excitation light and the light generated by excitation are on the same parallel radiation trajectory. Therefore, the flexible positioning and online measurement of the probe are easy to achieve. Based on this testing principle, instruments can detect the cleanliness of parts that do not contain or contain slightly fluorescent materials in their composition.