TD604-3 computer digital display asphalt needle penetration tester is based on the People's Republic of China national standard GB/T4509 "petroleum asphalt needle penetration determination method", GB/T269 "grease and petroleum grease cone penetration determination method" and the People's Republic of China traffic industry standard "U052-2000" Highway Engineering asphalt and asphalt mixture test Procedures "one T0604 "Asphalt penetration Test" technical requirements and related regulations designed and manufactured, mainly applicable to the following two types of product measurement:

1, asphalt: sample placed in a constant temperature bath of 25°C±0.1°C, the load is 100 grams ±0.05 grams of standard needle, vertical movement without obvious friction, in 5 seconds vertical penetration into the depth of asphalt sample called asphalt needle entry degree, in order to identify the viscosity of asphalt. The greater the penetration of asphalt, the smaller the viscosity of asphalt, the softer the asphalt.

2, grease: the sample is placed at 25°C±0. Generation of constant temperature bath, load 150 grams of standard cone. In no obvious friction under the vertical movement, in 5 seconds into the depth of grease or oil grease, known as grease or oil grease cone penetration, to identify the soft and hard degree of grease or oil grease.

3, in addition to the two main uses, the instrument can also be used for solid fine grain, powder, colloid, frozen body and other materials, as well as cheese, sugar gum, butter, wheat, cream, fermentation body and other food raw materials testing, in the food industry, traffic highway engineering and other industrial sectors can be widely used.