I. Summary
The instrument is designed and made as per T***1 “Asphalt Standard Viscosity Test” in the Industry Standard of People’s Republic of China JTJ*******0 Specifications and Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering. It is suitable to determine the viscosity of liquid petroleum asphalt, coal pitch and emulsified asphalt at flowing state.

II. Main technical specifications and parameters
1. Power supply: AC **0 V±*0%, *0 Hz
2. Circular trough:
     (1) Inner diameter: **0 mm
     (2) Depth: **6 mm
3. Sample tube: four pieces in a set. The diameter of effuse tube is: φ*0 mm±0.**5 mm, φ5 mm±0.**5 mm, φ4 mm±0.**5 mm and φ3 mm±0.**5 mm.
4. Ball stopper specification:
     A: Diameter of ball: *2.7 mm±0.*5 mm; Sign height: *2 mm±0.*5 mm.
   B: Diameter of ball: 6.*5 mm±0.*5 mm; Sign height: *0.3 mm±0.*5 mm.
5. Temperature controlling range: room temperature～*0 ℃.
6. Temperature controlling accuracy: ±0.1 ℃
7. Time resolution: 0.1 s, maximum time value: **9.9 s
8. Heating type: electric heater. Use a circulation pump circulating water bath liquid to control the temperature in the circular trough. Heating power is **0 W.
9. Ambient temperature: **0℃～*5 ℃
*0. Relative humidity: ≤ *5%
*1. Dimension: length **0 mm, width **0 mm, height **0 mm
*2. Total power consumption: not more than **0 W