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Operating Procedures for the Asphalt Softening Point Tester
2021-12-02
Operating Procedure for the Asphalt Softening Point Tester:
■ Connect the power cord and press the “Power” button; the indicator light will turn on.
■ Select the measurement range according to the specimen specifications. On the asphalt softening point tester, attach or remove the weight from the pendulum, and adjust the damping handwheel if necessary.
■ Install the corresponding jaws into the upper and lower jaw holders according to the specimen switch and dimensions.
■ Roll and secure the recording paper onto the printer’s dedicated spool.
■ Start the oil pump and open the oil valve to raise the platform by about 10 mm, then close the oil supply valve. If the platform is already in the raised position, there is no need to start the oil pump first; simply close the oil supply valve.
■ Clamp one end of the specimen in the upper jaw. For models equipped with a hydraulic chuck, press the “Tighten” button on the control box to clamp the specimen.
■ With the platform already raised and both the supply and return oil valves closed, adjust the pointer to align with the zero mark on the dial. (Note: This operation should be performed under non-pressurized conditions.)
■ Start the lifting motor to adjust the tensile testing space and securely clamp the specimen vertically. For models equipped with hydraulic grips, press the “Lower Tight” button on the control box to securely clamp the specimen vertically.
■ Lower the drawing pen of the stylus to enter the drawing preparation state.
■ Slowly open the oil supply valve at the loading rate specified in the test requirements to perform the loading test. After the specimen fractures, close the oil valve. If there is a long interval between successive test groups, the asphalt softening point tester should also be used.
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