Precautions for the determination of softening point of upgraded asphalt
Asphalt softening point tester is used to determine the softening point of road petroleum asphalt, coal asphalt, liquid petroleum asphalt and emulsified asphalt evaporation residues and other materials.
use
Used to determine the softening point of road petroleum asphalt, coal asphalt, liquid petroleum asphalt and emulsified asphalt evaporation residues and other materials
Instructions for use
Place the sample in the metal ring of the specified size, place the steel ball of the specified size and weight, put it in water (or glycerin), and heat it at a speed of 5 ± 0.5 ℃ / min until the steel ball sinks to 25.4mm At the time, note that the temperature at that time is the softening point of the sample.
Precautions
1. The use and storage of the instrument must be handled with care to avoid damage to the glass products and thermometer
2. After each test, the instrument must be wiped clean
Operating procedure
1. Put 800 ~ 1000ml of distilled water in the beaker. When the indoor temperature is low, you can put less, and when the indoor temperature is high, you can put more.
2. Adjust the temperature in the beaker to 5 ° C by heating or putting in ice water.
3. Put the magnetic stir bar to the middle of the bottom of the beaker.
4. Put the two specimens into the specimen ring and place the two steel balls in the center of the specimen. Put the sample in a beaker with a constant temperature of not less than 15min.
5. Place the beaker in the tester and plug in the power socket.
6. Turn on the power switch, press the "Start" button, and adjust the speed button to adjust the speed of the stirrer to the appropriate position. When heating starts, the speed of the stirrer can be faster. When the water temperature is close to the softening point, it stops rotating.
7. When the sample drops to 25.4mm, the tester sounds, indicating the end of the test.
8. Press the "Result" button to read the average temperature on the temperature display.
Note: It is strictly prohibited to press the "Reset" key during the test.
Verification method
4.1 Use the outer diameter micrometer to measure the three diameters of the steel balls of the asphalt softening point tester that are perpendicular to each other, and then weigh them with an analytical balance.
4.2 Check whether the surface of the steel ball and sample ring of the asphalt softening point tester is rusted or incomplete.
4.3 and the outer diameter micrometer to measure the size of each part of the sample ring.
4.4 Use vernier calipers to measure the distance between the lower edge of the bearing ring of the asphalt softening point tester and the bearing plate.
4.5 Use a steel ruler to measure the size of the heat-resistant glass beaker of the asphalt softening point tester.
main feature
1. The temperature is automatically controlled by the instrument without human error.
2. External temperature probe, sensitive to temperature.
3. Speed ​​is controlled by PID plus fuzzy logic algorithm, linear heating.
4. Comes with backlit blue screen display, more environmentally friendly and intuitive.
5. New appearance, more convenient operation.
6. With magnetic stirring device, the test temperature is more uniform.
7. Automatically and manually record the test results, automatically calculate the average
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