JTG 3410-2025 Asphalt Softening Point Tester

1. LRHD-8 typeJTG 3410-2025 Asphalt Softening Point TesterProduct Overview:

The new computerized asphalt softening point tester is based on the global method to determine the softening point of viscous petroleum asphalt. This instrument is suitable for determining the softening point of road petroleum asphalt, polymer modified asphalt, or diluted asphalt, emulsified asphalt residue. It is the preferred instrument for highway, bridge construction, and research institutions.

This instrument complies with the requirements specified in the latest standard of the People's Republic of China (GB/T4507-2014) "Determination of Softening Point of Petroleum Asphalt" and the mandatory industry standard JTG3410-2025 "Test Code for Asphalt and Asphalt Mixtures in Highway Engineering" T0606-2025 "Softening Point Test of Asphalt".

2. The main features of LRHD-8 asphalt softening point tester are:

★ 7-inch LCD touch screen display: rich and centralized clock display, current temperature display, timing display, heating process display, test result display, function selection keyboard, etc., with high integration and simple operation.

★ Microcomputer CPU control, precise heating rate, meeting the requirement of 5 ± 0.5 ℃/min. The heating rate of the instrument is automatically calculated by the CPU and displayed as the rate of water temperature rise per minute, saving the trouble of manual calculation and greatly reducing the workload of the tester. After the test is completed, the equipment automatically displays and records the test results.

★ Laser scanning detection, when the steel ball falls, the instrument will automatically detect and lock the temperature of the steel ball falling to the bottom plate, and automatically calculate the average temperature, avoiding errors caused by manual calculation, making the detection data more accurate and the operation simpler..

The instrument adopts a German imported microcrystalline glass carbon crystal ceramic electric heating plate with magnetic stirring, and the temperature control method adopts the bottom heating of the glass dish, which meets the requirements of the new industry standards. The instrument uses the PID intelligent control mode of the microcontroller to achieve the required temperature rise rate of 5.0 ± 0.5 ℃/min for the experiment

The instrument has two testing modes, high and low temperature, which can be switched through settings.

① When the softening point is ≤ 80 ℃, using water or purified water as the medium requires the heating rate to reach and stabilize at 5 ± 0.5 ℃/min within three minutes

② When the softening point is ≥ 80 ℃, glycerol should be used as the medium. After the test temperature reaches 60 ℃, the heating rate should reach and stabilize at 5 ± 0.5 ℃/min

★ The instrument has a magnetic stirring function to ensure uniform water temperature inside the glass dish, and the stirring speed can be adjusted. The instrument is equipped with a high-precision speed measurement device, which can display the speed of magnetic stirring (r/min) in real time.

★ Printing function: The instrument is equipped with a printer, which can print the temperature and speed of the entire test process, as well as the test results, after the test is completed.

★ Networking function: The instrument has added a network information transmission system, which can upload test information and results in real time through Ethernet cables, making it easy to remotely monitor the test process and results.

3. LRHD-8 typeJTG 3410-2025 Asphalt Softening Point TesterMain technical indicators

★ Voltage frequency: 220V ± 10%, 50Hz;

★ Working environment: Room temperature less than 35 ℃; In situations without direct exposure to strong light.

★ Measurement range: 5-80 ℃ (in aqueous medium); 80-300 ℃ (glycerol, silicone oil or other medium)

★ Temperature accuracy: minimum division of 0.1 ℃;

Time accuracy: minimum division of 1S;

★ Display: 7-inch LCD touch screen display;

★ Detection scanning: laser automatic detection

★ Steel ball: Φ 9.5mmG=3.5 ± 0.05g;

★ Beaker: Glass product with a capacity of not less than 0.8L, a depth of not less than 120mm, and a diameter of not less than 86mm;

★ Blender: The stirring speed is continuously adjustable (using a Japanese Shinano motor for accurate counting and long service life);

★ Stirring element: Φ 8 × L40mm

★ Mixing speed: 0-500r/min (continuously adjustable)

Heating rate: automatically adjusted to 5.0 ± 0.5 ℃/min after three minutes of start-up;

★ Heating power: 1000W;

★ Cooling fan: 12V0.18W (two sets of Taiwan, China Delta axial flow fans are used)

4. LRHD-8 Asphalt Softening Point Tester Instrument Structure:

The instrument control part includes: display screen, heating control, laser detection device, speed control, data transmitter, power supply, front panel and rear panel, etc;

The instrument testing part includes: beaker, heating tube, temperature sensor, sample ring, steel ball positioning ring, etc.

Rear panel: The power interface is connected to a 220V/50Hz AC power supply through a power cord, the heating interface is connected to the heating tube of the tester through a heating wire, the temperature interface is connected to the temperature sensor, and the data transmission network port is connected.