Brookfield DV-I Viscometer User Manual

Page 18

Brookfield Engineering Laboratories, Inc.

Page 18

Manual No. M/92-021-O604

TIMED TORQUE

SET TORQUE: 00%

Figure II-22

Using the

and

DOWN ARROW

keys, the user enters a value for the torque level which

the viscometer must achieve. This value can be as high as 99%.

NOTE:

The value for torque must be other than zero or you will not be able
to exit this mode.

2. The user presses the

SELECT SPINDLE

key one more time to end the torque input at which

point the viscometer will display the following screen:

TIMED TORQ:PRESS

MOTOR ON OFF

Figure II-23

The time to torque value can be as high as 99 minutes and 59 seconds.

3. At this point, the user need only press the

MOTOR ON/OFF

key to begin the timed torque

operation. Any other key will abort the process and the user will have to begin again by
simultaneously pressing the

SET SPEED

and

SELECT SPINDLE

keys.

4. We will assume that the user pressed the

MOTOR ON/OFF

key to ON and is now presented

with the following display for the duration of the timed torque run:

TORQUE = 24.2%

MIN: 15 SEC: 13

Figure II-24

NOTE:

When this mode has begun, a press of the

MOTOR ON/OFF

key will interrupt the

time to torque operation and return the user to normal operation.

The seconds display will increment from zero (0) to 59 in one (1) second intervals and the
current value of the viscometer torque will be updated continuously. When seconds reach
59, the minutes value will increment by one (1) minute. This will continue until the user
selected torque value is attained at which point the viscometer will display the following
screen:

22M 54S TO 85%

TIMED TORQ DONE

Figure II-25

At this point, the viscometer will stop the motor and continue to display this screen until
the user presses the

DOWN ARROW

keys to view the viscosity that was current at the

Timed Torque completion. The display would appear as follows: