the scales and "Reset" on the touch screen.
⑥
Let sample stage go up. Press "Platform rise" on the touch screen. When the bottom of
the platinum plate is 3~5 mm apart from the ethanol liquid level, press the "Platform stop"
on the touch screen.
⑦
Start measuring. Click the "Test"
on the "Platinum plate method" interface. The
sample stage began to rise, and collect data, when after the data collection, instrument
and automatic stop, the tension is the surface tension value at this time
⑧
Continue tests and repeat step
⑥
until the data is basically stable (Usually, we take the
average value of the third, fourth and fifth experimental data in the current test; more tests
are needed for sample of high viscosity).
⑨
Repeat tests. Please clean the plate with slowly running clear water before burning (If
possible, please use the ultrasonic water.) to prevent the plate from being destroyed by
material difficult to burn in the liquid to be tested. Repeat steps
⑤⑥⑦
.
⑩
Change the ethanol into distilled water and repeat steps
③④⑤⑥⑦⑧
.
3.4 Parameter calculation
Check the
Index Table
5.2 or 5.3 according to the current temp, enter the ideal and
measured tension value of distilled water and ethanol and calculate correction coefficient
respectively.
1) Using touch screen
①
Click "Calibration of water", input standard and measured values, then click" Ring
calibration".
②
Click "Calibration of ethanol" , input standard and measured values, then click" Ring
calibration".
