The Automatic Constant Temperature Digital Asphalt Viscometer is designed to accurately measure the viscosity of asphalt and bitumen under controlled temperature conditions. Featuring automatic temperature regulation and a digital display system, it ensures precise, reliable results for laboratory testing, quality control, and road construction applications, in compliance with international standards such as ASTM and EN.

Automatic Asphalt Viscometer

Model:TD621-1

I. Product Introduction

This asphalt standard viscometer is designed and manufactured according to the relevant requirements of T0621 "Standard Viscosity Test of Asphalt" in the People's Republic of China industry standard JTG 3410-2025 "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering". It is suitable for determining the viscosity of liquid petroleum asphalt, coal tar pitch, and emulsified asphalt in a flowing state using this standard method.

This instrument also references international standards such as ASTM D2170 and EN 12595, and features accurate measurement, stable performance, and easy operation. It is widely used in highway engineering, research institutions, and quality testing laboratories.

II. Main Technical Features

1. Employs advanced integrated semiconductor refrigeration and heating technology for rapid heating and cooling with a wide temperature control range;

2. Equipped with a high-precision digital temperature control system, achieving a temperature control accuracy of ±0.1℃, ensuring accurate and reliable test results;

3. Utilizes a digital display timing system, providing high timing accuracy and intuitive readings;

4. Rational structural design, simple operation, and convenient maintenance;

5. Multi-specification flow orifice design to meet testing requirements for different viscosity ranges;

6. Stable overall performance, good repeatability, suitable for long-term continuous testing.

III. Technical Parameters

1. Annular Water Tank: Inner diameter 160mm, depth 116mm;

2. Sample Collection Tubes: A set of 4, with flow orifice sizes of φ10mm±0.025mm; φ5mm±0.025mm; φ4mm±0.025mm; φ3mm±0.025mm;

3. Ball Plug Specifications: A: Ball diameter 12.7mm±0.05mm; Marking height 92mm±0.25mm; B: Ball diameter 6.35mm±0.05mm; Marking height 90.3mm±0.25mm;

4. Temperature control range: 20℃～90℃;

5. Temperature control accuracy: ±0.1℃;

6. Timing resolution: ≤0.1s, maximum timing value 999.9s.

IV. Application Areas

Highway engineering laboratories;

Asphalt production enterprises;

Universities and research institutions;

Third-party testing agencies, etc.