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Receipt:
A continuous roll of paper that allows for printing of multiple data points. The paper stock is available
from AMETEK Brookfield; part number GV-1047 (standard) or GV-1081 (long life).
The Printer Setup is selected by touching the desired configuration, which will result in a blue circle to appear to the
left of the item. The OK command key must be selected to confirm the setting.
AutoZero
AutoZero is an operation performed by the DVNext Rheometer automatically during the power up sequence. This
operation sets the instrument transducer to a correct zero value. The zero value should not shift over time, however,
if the user determines that the zero is not correct, you can force an AutoZero to be performed without powering
down the rheometer. When the AutoZero function is selected, the DVNext is immediately set to AutoZero mode and
the user is presented with the AutoZero screen (see Figure 2-3). Upon completion, the user will be returned to the
Device Setup menu.
Oscillation Check
The Oscillation Check is a check of the performance of the lower bearing of the DVNext. This lower bearing is either
Point and Jewel or Ball Bearing. Correct performance of the lower bearing is essential for proper operation of the
rheometer. A failed lower bearing will normally cause viscosity measurements to be lower than expected. Selecting
Oscillation Check in the Device Setup menu will present the user first with a screen instructing to level the rheometer
and remove the spindle. Confirmation of level and spindle removal will present the user with the Oscillation Check
screen as shown below.
A successful Oscillation Check will show a very smooth decrease of %Torque with a final value within +/-0.3 of 0.0.
Any value above 0.3 % or below -0.3% indicates that a calibration check should be performed (see Appendix F).
The Oscillation Check is not a guarantee of proper calibration. It is only an indication of the performance of the lower
bearing of the rheometer. Calibration can only be verified using a calibration standard such as AMETEK Brookfield
Silicone and Mineral Oil standards.
See Appendix H for additional information.
Technical Support Info
The information contained in the Technical Support Info menu is designed to support AMETEK Brookfield for
problem resolution. When contacting AMETEK Brookfield for support, you may be asked to provide information
contained in one of the menu choices within Technical Support Info. There are no settings within this section and the
performance of the DVNext Rheometer cannot be affected by accessing this section.
About
The About screen is shown during the start-up sequence of the DVNext Rheometer. Selecting About in the Device
Setup menu will show the same information (see Figure V- 6). Information in the About screen includes: Torque Range
(LV, RV, HA, HB), Model Number, Firmware Version, Rheometer Serial Number, TK version (torque table), Spindle
version (spindle table).
M19-2101 REVISION 2.0
Figure 5-5
D V N E X T R H E O M E T E R - O P E R AT I O N A L M A N U A L
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