Brookfield DV-III Ultra Rheometer User Manual

Page 49

Brookfield Engineering Laboratories, Inc.

Page 49

Manual No. M98-211-E0912

Programs are run by pressing the “2” key when in Figure IV-32 which presents the user with the

following screen:

B.E.V.I.S. PROGRAMS

RUN PROGRAM #3

PRESS ENTER TO START

Figure IV-36

Here we see that our program is no. “3” and that a press of the

ENTER

key will start it running. As

soon as the program starts executing the user will be presented with:

RUNNING PROGRAM #3

THIS STEP: WTI0330
NEXT STEP: PDN
STEP 02/39 01:00

Figure IV-37

This is a typical display for a given program step. The current step being executed (WTI0330)

is shown as well as the next step to be executed (PDN). The bottom line displays the current

program 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:

RPM:0.0 SPINDLE:31
TEMP:72.1°C PRTN

BEVIS PROG RUNNING

TORQUE = 00.0 %

Figure IV-38

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 IV-37 and Figure IV-38. The program code will automatically switch back to

the program progress screen, Figure IV-37 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 for Viscosity Tests

The DV-III Ultra 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 Ultra 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.