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Fast evaluation of surface wettability in manufacturing processes by measuring the contact angle

The SITA SurfaSpector is a new hand-held measuring device for testing the wettability of metal, glass and plastic surfaces, e.g. after surface treatment or cleaning.

The device combines an objective measurement with simple handling and enables a fast evaluation of the surface.

 

Brochure SITA SurfaSpector

Product description

• Automated measuring procedure including drop placement, drop detection and direct determination of the contact angle

• Handy sensor head for measuring at various parts geometries

• Simple operation via touchscreen

• Mobile use without PC directly at the plant or in the process

• Limit value monitoring in measuring profiles usable for various applications

• Optional PC software SITA-SurfaceLog for advanced measurement data visualization and export

Applications

• Quality assurance after parts cleaning

• Wettability inspection

• Testing of surface activation, e.g. after a plasma treatment
and many more applications in surface analysis

Measuring principle


A drop of water is precisely placed at the surface by an automatic dosing unit. The drop is illuminated from the side. A shadow of the drop is projected onto an inclined measuring surface. The projection is recorded from above by a high resolution camera and the picture is corrected for perspective. The drop shape is determined and the contact angle calculated. The lower the contact angle, the higher the wettability.

 

Technical data

Contact angle
Range 5°…175°
Resolution 0.1°
Liquid pure water, refillable,
5 ml for 5,000 measurements
Method
Optical determination of the contact angle of a lying drop
Drop volume 1 μl
Min. sample surface 5 x 5 mm
Operation
Main unit 5“ TFT-display 800 x 480 pixel, capacitive touch,
intuitive grafical user interface
Sensor measurement start button, LED for optical feedback
Power supply / interfaces
Li-Ion battery
2x 6,400 mAh, min. measurement time 6 hours
Power plug 12 V, 2.5 A (max. 17 V, 3 A)
Interfaces, memory, Dimensions and weight
USB USB-C (data transfer, USB-C power delivery)
Speicher 10 GByte
HxWxD / Weight Main unit: 80 x 210 x 130 mm / 1,100 g
Sensor: 117 x 50 x 82 mm /330 g
Accessories

Calibration standard, stand

 

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© SITA Process Solutions 2017

A business unit of SITA Messtechnik GmbH.