Brookfield DV-III Ultra Rheometer User Manual

Page 39

Brookfield Engineering Laboratories, Inc.

Page 39

Manual No. M98-211-E0912

USING PROGRAMMED SPEEDS WITH A ZERO TIME INTERVAL

Assume the following:

• A speed set has been selected.

• A subset of the speed set has not been selected. (i.e. we will use the entire set of speeds)

• The speed set included a time interval that was equal to zero minutes and zero seconds.

• Print mode has been set to non-continuous mode (i.e. output will be sent to the printer only

when the user presses the

ENTER

key).

With the above items in effect our default display screen will appear as follows after the PROGRAM

steps have been completed:

RPM:112 SPINDLE:31
TEMP:72.1°F PRTN
SET 2 01-12@02 ENTER
TORQUE = 56.3 %

Figure IV-20

Or, if the user had selected the LOCKOUT option, the default screen above would appear as in

Figure IV-21 below:

RPM:112 LK SPDL:31
TEMP:72.1°F PRTN
SET 2 01-12@02 ENTER
TORQUE = 56.3 %

Figure IV-21

Here, the LOCKOUT mode is indicated by the revision to the top line of Figure IV-21 where

“SPINDLE” has been contracted to “SPDL” and the two-letter combo: “LK” is being used to

indicate the “LOCKOUT” condition. Please note that while TORQUE is presently being displayed,

there is nothing to prevent the user from pressing the

SELECT DISP

key to change the data display

item.

The item to note here is the message being displayed on line 3 informing the user that the program is

at speed #02 of the 12 speeds comprising speed set #02. The DV-III Ultra will continue to operate

at 112 RPM until the

ENTER

key is pressed. At that point (pressing the

ENTER

key), two distinct

events will occur:

1. The DV-III Ultra will ramp up (or down) to programmed speed #03 and,

2. Since the printer is On (PRNT), the data corresponding to the last speed (112 RPM) that

existed at the time the

ENTER

key was pressed will be sent to the attached printer.

Thus, if 12 speeds comprised the selected speed set, then the user would be required to press the

ENTER key 12 times to exercise the entire speed set. After the last speed has been executed (i.e.

the user pressed the

ENTER

key for the twelfth time), the viscometer speed will be set at ZERO

RPM and the following message will be displayed:

PROGRAM COMPLETE

PRESS EITHER

ENTER OR PROGRAM RUN

Figure IV-22