M21-400 REV.1.1 DVPLUS DIGITAL VISCOMETER - OPERATIONAL MANUAL
during the spindle selection process and the speed selection process. The FSR value will change as the selected
speed or spindle is changed and will be displayed in the viscosity measurement units selected by the user in the
Settings Menu (see Section 2.9).
AMETEK Brookfield recommends that viscosity measurements be made only when the instrument’s % torque value
is between 10 and 100. The FSR represents the maximum value that can be measured (i.e., 100% on the Torque
scale). The minimum viscosity that can be measured is 10% of the FSR, which is equivalent to 10 on the Torque scale.
The accuracy of the AMETEK Brookfield Viscometer is expressed as a percentage of the instrument’s Full-scale
Range. When using the standard LV (61-64) and RV (2-7) spindles, the instrument’s accuracy is +/-1% of the Full-
scale Range.
2.8 Display Resolution
The DVPlus Viscometer oers a wide range of viscosity measurements. The data displayed will present a specific
resolution depending upon the magnitude of the data. This resolution is consistent with the stated accuracy of the
AMETEK Brookfield Viscometer. The table below shows the display resolution for viscosity, which will be utilized by
the DVPlus Viscometer.
2.9 Settings
The Settings Menu is accessed by pressing the Settings icon in the top right corner of the screen. The following
settings are found in this scrolling menu:
• Viscosity Units Set the unit of viscosity measurement, cP, Pa•s, mPa•s, P
Unit Abbreviation Unit Equivalency
cP centiPoise 100 cP = 1 P = 100 mPa•s = 0.1 Pa•s
Pa•s Pascal Second 1 Pa•s = 1000 mPa•s = 1000 cP = 10 P
mPa•s milliPascal Second 1 mPa•s = 1 cP = 0.01 P = 0.001 Pa•s
P Poise 1 P = 100 cP = 100 mPa•s = 0.1 Pa•s
• Torque Units Set the unit of torque measurement, %, mNm, dyne•cm
• Temperature Units Set the unit of temperature measurement, °C, °F, K.
• Temperature Oset Set an oset value for the temperature probe (optional).
Note: Temperature measurement requires the use of a DVP-94Y external temperature probe.
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