The HT-4507 automatic asphalt softening point tester complies with the provisions of GB/T4507 “Test Method for Softening Point of Petroleum Asphalt”. It is suitable for determining the softening point of various asphalts such as road petroleum asphalt, coal tar asphalt, and liquid petroleum asphalt. It is also applicable to determine the softening point of residues after distillation of liquid petroleum asphalt or demulsification and evaporation of emulsified asphalt.

An asphalt sample is placed in a copper ring of specified size with a steel ball of specified size and weight. Under specified heating conditions (the temperature rises by 5℃±0.5℃ per minute), the heating temperature when the softened sample moves down to a specified distance (25.4mm) is the softening point of the sample.

Main Features：

1. Color touch LCD display, single-chip microcomputer intelligent temperature control, menu-style input;

2. Adopting PID plus fuzzy logic algorithm control, automatic stirring and linear heating;

3. Using high-temperature resistant quartz square glass cylinder, electronic photoelectric measurement, and uniform stirring of bath liquid;

4. It can test four samples at the same time, with convenient testing, reliable results and high testing efficiency;

5. Automatically detect test results, automatically display and print test results after the test is completed;

6. Powerful storage capacity, storing 500 records, and historical records can be checked at any time;

Main technical indicators：

Display method: Color touch screen display

Temperature control range:

(1) For samples with a softening point below 80℃, distilled water is used as the heating medium, with a range of +5℃～+80℃;

(2) For samples with a softening point above 80℃, glycerin is used as the heating medium, with a range of +32℃～+160℃;

Test samples: 4 pieces

Resolution: 0.01℃

Heating rate: Automatically adjusted to (5.0±0.5)℃/min after three minutes;

Printer: Low-energy thermal printer, paper width 56mm

Temperature measuring element: Precision PT100 platinum resistor

Beaker: Quartz square glass cylinder, effective volume 1000ml;

Operating environment: Recommended room temperature—45℃

Power supply requirement: AC220V±10% 50Hz

Maximum size: 380*310*510 (length*width*height)