Brookfield DV3T Rheometer - Manual (Page 27)

Brookfield Engineering Labs., Inc. Page 27 Manual No. M13-2100
Many samples must be controlled to a specific temperature for viscosity measurement. When
conditioning a sample for temperature, be sure to temperature control the container and spindle
as well as the sample.
Please see our publication, “More Solutions to Sticky Problems”, for more detail relating to
sample preparation.
III.3 Programming
The DV3T Rheometer provides a powerful programming capability for data collection. The interface
in Configure Viscosity Test allows for control of all instrument parameters including Spindle, Speed,
Temperature (optional), End Condition, Data Collection, Instructions, Reports, Density, and QC Limits
(described in the next sections of this chapter). Any collection of these parameters is considered a
Test Step. The DV3T allows you to create multiple steps to better evaluate your sample material.
Several parameters are only active in the first step including Spindle and Instructions.
Multiple steps in a Test can be useful to evaluate the rheology of a sample or to simply aid in data
collection. A multi step Test that has a change in speed in each step can show Newtonian or non
Newtonian flow behavior. A first step with No Data can be useful when pre shearing is required. A
step with No Data can be useful when a temperature change is effected and some time is required
for thermal equilibrium.
The Configure Viscosity Test screen (see Figure III-1) includes several tools for creating Tests with
multiple steps.
Figure III-1
Navigation / Add: Use the to add a new step at the end of the
Test. Use the to navigate to previous steps.
Delete: Delete the current step.
Insert: Insert a new step after the current step.