Brookfield DV-III Rheometer - Manual (Page 36)

Brookfield Engineering Laboratories, Inc. Page 36 Manual No. M/98-211-A0701
step, the total number of steps (02/39) and any time intervals if they are relevant. The WKY
command message could be displayed on the bottom line in lieu of the step and time info. This screen
stays resident until the user presses the
OPTIONS/TAB key which “toggles” back-and-forth between
this screen and an amended default screen shown next:
Figure 56
The user now sees viscosity data and can use the SELECT DISPLAY key to view other viscosity
measurement parameters. Pressing the OPTIONS/TAB key from now on will toggle between the
screens of Figure 55 and Figure 56. The program code will automatically switch back to the
program progress screen, Figure 55 above, if a conditional has been reached, the end of a program
step is reached or user input is required. If no user input is required, the B.E.V.I.S. program proceeds
to the next step without switching back to the progress screen.
IV.4 Choosing the Best Data Collection Method
The DV-III+ offers 3 methods for data collection; Single Speed, DV-III Speed/Time Pairs and
B.E.V.I.S. Programs. The decision of which technique is best should be made considering the
test requirements.
SINGLE SPEED
Single speed measurements may be made by direct speed commands on the DV-III+ keypad.
Viscosity and % Torque are read directly from the display. This technique offers the simplicity of
the Brookfield Dial Viscometer. Multiple data points may be gathered by issuing multiple speed
commands.
This technique is fast and easy. It's well suited to gathering data on samples prior to establish-
ing a test method or for performing single point tests.
DV-III SPEED/TIME PAIRS
DV-III speed/time pairs offers a simple technique to collect multiple data points. Programs can be
created and executed from the DV-III+ keypad. Results can be analyzed or output to a printer.
This technique is useful when multiple data points are required and the test method is simple.
B.E.V.I.S. PROGRAMS
B.E.V.I.S. Programs offer a command set capable of sophisticated rheometer control and data
collection. Programs are created on a PC and executed from the DV-III+ keypad. Results can be
analyzed or output to a printer.
The B.E.V.I.S. Program technique is useful when sophisticated data collection is necessary.