V.3 alarms, Alarms – Brookfield DV-III Rheometer User Manual

Page 42

Brookfield Engineering Laboratories, Inc.

Page 42

Manual No. M/98-211-A0701

V.3 Alarms

There are three adjustable alarm settings: LO ALARM %, HI ALARM % and MOTOR OFF %.
The values are set in the Set Alarms mode. Alarms are used to signal the operator that the fluid is
out of the input specification. The alarms are set in % torque values, not Viscosity, Shear Stress or
Shear Rate values. The range of values which may be entered for each alarm and their default values
are:

LO ALARM

HI ALARM

MOTOR OFF

Minimum value: 10%

Minimum value: 0%

Maximum value: 99.9%

Maximum value: 100%

Maximum value: 115%

Default value:

10%

Default value:

99.9%

Default value:

110%

The procedure for entering and enabling alarm values is as follows starting from the main screen:

1) Press the

OPTION/TAB

key to display the Options Menu.

2) Press the

NUMBER 3

key to display the Alarms Options screen.

3) Press the

NUMBER 1

key to View/Set Alarms.

4) Enter the LO ALARM % torque value. The new entry will overwrite the default values.

5) Press the

OPTION/TAB

key to move the cursor to the HI ALARM % field.

6) Enter the HI ALARM % torque value. The new entry will overwrite the default values.

7) Press the

OPTION/TAB

key to move the cursor to the MOTOR OFF % field.

8) Enter the MOTOR OFF % torque value. The new entry will overwrite the default value.

9) Press the

ENTER

key to accept the ALARM values.

10) Press the

NUMBER 3

key to enable (turn on) / disable (turn off) the alarms.

11) Press

ENTER

to accept the ALARM condition.

Note:

The LO ALARM is tripped after the % torque reading falls below the setting.
The beeping may be shut off by either the % torque reading rising above the
alarm setting or by pressing the ESCAPE key.

The HI ALARM is tripped after the % torque reading goes above the alarm
setting. The beeping may be shut off by either the % torque reading falling
below the larm setting or by pressing the

ESCAPE

key.

The MOTOR OFF is tripped after the % torque reading goes above the motor
off setting. The DV-III+ stops rotating and the instrument beeps. Pressing any
key turns off the beep.