3 PRECAUTIONS AND HAZARDS
Before attempting to operate the TVS read all parts
of this manual carefully to insure smooth operation
and avoid damage to the equipment or its
accessories.
If a malfunction occurs, consult section trouble shooting
page 14 at the end of this manual.
If problem persists, call your supplier or Tamson
Instruments bv. Never operate the equipment if not
correctly installed. The equipment must be operated
only by qualified personnel. Avoid damage to the
equipment or its accessories through incorrect
operation.
4 Set-up
4.1 System Application
The TVS is used in combination with a viscometer bath.
The Tamson vacuum manifold (TVM) p/n 00T0941 has
specifically been designed to fit the TV4000MKII. As
indicated on the picture the vacuum pump is connected
via a four position manifold to a maximum of four
viscometers.
The pressure can be set in small steps offering a
resolution of 1 digit (no decimals) (mBar, PSI or mmHg).
The TVS especially has been designed for measuring
viscosity of bitumen (ASTM D2171 – IP 22 – EN 12596
– AASHTOT202). The system also can be supplied for
manual viscosity testing and conforming to D445 and IP
71 and ISO 3104.
For low viscosity the vacuum can be reduce to just a few
mBar. Sucktion of the sample fluid can be extremely
well controlled and this prevents air bubbles in the
sample. Air bubbles are a serious cause for measuring
error. By using controlled vacuum this completely rules
out this error.
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