Ametek BROOKFIELD DVPlus

M21-400 REV.1.1 DVPLUS DIGITAL VISCOMETER - OPERATIONAL MANUAL
Table D-4
PRE-SHEAR SPEEDS (RPM)
Range Increment
0.0 N/A
0.1 to 59.9 0.1
60 to 200 1.0
ZERO STEP SPEEDS (RPM)
RANGE INCREMENT
0.1 to 59.9 0.1
RUN SPEEDS (RPM)
RANGE INCREMENT
0.1 to 59.9 0.1
The shear stress measurement range for the three standard (or supplied) vane spindles at each spring torque is as
follows:
Table D-5
SPINDLE MODEL CODE ON DV-III
ULTRA SCREEN
TK
V-71 LV 0.09375
V-72 LV 0.09375
V-73 LV 0.09375
V-71 RV 1
V-72 RV 1
V-73 RV 1
V-71 HB 8
V-72 HB 8
V-73 HB 8
V-71 5xHB 40
V-72 5xHB 40
V-73 5xHB 40
Where:
θM = Angular rotation of motor shaft (rad)
ω = Rotational speed (rpm)
t = Time of test (seconds)