M19-2101 REVISION 2.0 DVNEXT RHEOMETER - OPERATIONAL MANUAL
Figure 2-2
2.2.1 AutoZero
The DVNext Rheometer must perform an AutoZero prior to making viscosity measurements. This process sets the
zero reading for the measurement system. The AutoZero will be performed every time the instrument is turned on.
Additionally, you may perform an AutoZero at any time through the Settings Menu (see Section V.1).
The AutoZero screen will be presented automatically, after the About screen, during a power up.
The operator must ensure that the rheometer is level (see Section I.4) and remove any attached spindle or coupling.
When the Next button is pressed, the rheometer will operate for approximately 13 seconds. After the AutoZero is
complete and the operator presses the Next button, the rheometer will transition to the Configure Viscosity Test
screen. If the AutoZero was performed from the Settings Menu, then the rheometer will return to the Settings Menu.
TIP: For instruments with Magnetic Coupling System, keep spindle end and other magnetic materials 1-inch away
from the coupling during autozero.
TIP: Do not touch the rheometer during the AutoZero process to ensure the best zero value.
Figure 2-3
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