Brookfield DV-III Rheometer User Manual

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III. PROGRAM MODE TESTING

The DV-III can store 10 speed set programs and each program may have up to 25 steps. The program
locations are numbered 0 through 9.

There are two types of test programs:

1) Next Speed Set where the test speeds are programmed, and the operator must signal the DV-

III to change speeds (and therefore take a reading) by pressing the

key.

2) Prog Speed Set where the DV-III will perform the test automatically.

Each step of a program has two variables - speed and hold time. The reading is taken at the end of
the hold time interval in a Prog Speed Set or when the

key is pressed in a Next Speed Set.

If the first step hold time interval is 0 seconds, the program is a Next Speed Set type. If the first step
interval is 1 second or more, the program is a Prog Speed Set type.

III.1

Next Mode Speed Set Program

To create a Next Speed Set Program, proceed as follows:

1) Press the

PROG SPEED

key.

2) Choose and enter an available speed set program from the list on the screen using the numeric

keys to enter the location number. The screen will automatically switch from Figure 9 to
Figure 10. In Figure 9, the available speed sets shown are: 3,4,6,7.

Figure 9

3) Figure 10 indicates speed set 4 was selected. Enter the first step speed using the numeric keys.

The speed must be between 0.1 rpm and 250.0 rpm, in increments of 0.1 rpm.

Figure 10

4) Press the

key to accept the first step speed. The cursor moves to the time field.

5) Enter the first step time by entering all zeros in the field.

6) Press the

key to accept the first step time. The cursor moves back to the first step speed

field.

7) Press the

key again and the first program step is accepted and the screen displays step

number two with cursor waiting for the first entry of the speed field.

8) Enter each new speed (up to a maximum of 25) and press the

key to accept each new speed.