Absolute Viscosity of Bitumen

ASTM D2171, IP 222, EN 12596, AASHTOT 202

The ASTM D2171 method covers procedures for the determination of viscosity of asphalt binder (bitumen) by vacuum capillary viscometers at 60°C. It is applicable to materials having viscosities in the range from 0.0036 to over 20,000 Pa-s.

Tamson Vacuum System (TVS) is a digital vacuum controller designed to offer a precise pre-selected negative pressure of 300 mm Hg and used in conjunction with TVM and TV4000 to setup for viscosity of bitumen by vacuum capillary viscometer as per ASTM D2171.

Tamson vaccum system (TVS)

The digital vacuum controller is very quiet and the inside vacuum pump can be switched-off by a single button on the front of the instrument. With this practical button, the low noise of the vacuum pump is eliminated between tests and will increase the lifetime of the vacuum pump. When using small tubing, vacuum almost instantaneous builds up; no need to wait until vacuum is available. Fluid traps prevent fluid to be sucked into the system accidentally.

The TVS offers a range from 20 .. 320 mm Hg [30 .. 430 mBar]. An internal pump provides vacuum which can be set using the up/down key on the front panel. The set point is stored in memory and automatically set after power up. Internal pneumatics regulate the vacuum around this set point.

• Extremely small footprint compared to the few other vacuum systems available in the market, saving important workbench space

• Offers high precision and a feedback regulation on the vacuum. This control keeps the vacuum within 0.5 mm Hg of its set point.

• Low noise pump, long life

• Fitted with two fluid traps

Constant temperature bath

The TV4000MKII is a stainless steel double walled construction thermostatic constant temperature bath having temperature range from ambient to 230°C and offers uniform temperature stability of ±0.01°C. The bath is fitted with baffle plates, booster heaters, bath drain outlet, overflow outlet, over temperature protection and low liquid level warning. Click here for more details.

Tamson Vaccum Manifold (TVM)

The TVM can be easily mounted on our TV4000MKII by using the standard holes in the top plate. The manifold offers four positions and is delivered with 4 mm blue PU-tubing between TVM and TVS. Equipped with dedicated switch of each position (total four switches).