INTRODUCTION
HS-BST Bekk smoothness Tester is a new type of Test developed by our company according
tothe specification of international standard. The instrument mainly test the smoothness off the
paper or cardboard (by Bekk method).
Bekk  smoothness: time in seconds which under a defined pressure differential is required to draw

a definite quantity of air at atmospheric pressure between the surface of the test piece and a  ring-shaped

plane surface under specified conditions of contact.
The smoothness of a wide range of papers and boards may be measured by this method and it is  especially

ecommended for smooth papers and boards. However , for very smooth samples,  measurement times

may be impractically long.
APPLICATIONS Paper. paper board .
STANDARDS Meets ISO 5627，GB/T 456，QB/T 1665
SPECIFICATIONS
1. Power supply: AC220V±10%  50HZ
2. Precision：0.1s
3. Measuring range: 10±0.05cm2
4. Pressure: 100kpa±2kpa
5. Display: English menu and LCD screen
6. Printer : thermal printing, high speed and no noise.
7. Communication output: standard RS232 interface
8. Ambient conditions: temperature 10~30℃ . Relative humidity<85%
9. External dimensions: Length ×Width × Height＝318mm×362mm×518mm
10.Weight: 35kg
FEATURES
1. Unoiled vacuum pump
2. Choose prepressing time
3. Rapid measurement
4. Better sealed
5. Thermal printer
6. LCD display