Adjust the water temperature in the constant-temperature water bath according to the test temperature requirements. Place a certain amount of asphalt sample into the sample tube. Remove the cork at the bottom of the sample tube and simultaneously press the timer switch to allow the sample to flow into the receiving bottle. The timer stops when the sample reaches the 60ml mark on the receiving bottle.
The Asphalt Saybolt viscometer should be recalibrated no more than three years after use. The calibration procedure includes:
Clean the sample tube thoroughly after each test. If not used for a long time, keep it in a clean water bath to prevent corrosion and use a dust cover.
When switching from water to thermal oil, drain all water from the inner tank to prevent boiling and overflow.
Heating issues may be caused by poor electrical connection, blown fuses, or poor switch contact.