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6, 10, 12, 20, 30, 50, 60, 100, 200
ZERO STEP SPEEDS (RPM)
RANGE
0.01 to 0.09
0.1 to 0.5
The shear stress measurement range for the three standard (or supplied) vane spindles at each spring torque is as
follows:
SPINDLE
V-71
V-72
V-73
V-71
V-72
V-73
V-71
V-72
V-73
V-71
V-72
V-73
Calculations for Shear Stress in Yield Test
The following equations can be used to calculate the shear stress values after each packet of data is obtained from
the DVNext.
τ
Where:
= Yield Stress (Pascals)
TK
= Model Torque Constant from Table D-2
YMC
= Yield Multiplier Constant from Table D-3
T
= % Torque reading
The following equations can be used to calculate the strain data after each packet of data is obtained from the
DVNext:
M19-2101 REVISION 2.0
PRE-SHEAR SPEEDS (RPM)
Range
0.01 to 0.09
0.1 to 5.0
INCREMENT
0.01
0.1
MODEL CODE ON
DVNext ULTRA SCREEN
LV
LV
LV
RV
RV
RV
HB
HB
HB
5xHB
5xHB
5xHB
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
Table D-4
RUN SPEEDS (RPM)
RANGE
0.01 to 0.09
0.1 to 5.0
Table D-5
TK
09373
.09373
.09373
1
1
1
8
8
8
40
40
40
Increment
0.01
0.1
N/A
INCREMENT
0.01
0.1
SHEAR STRESS RANGE
(Pa)
0.047 - 0.47
0.19 - 1.9
0.94 - 9.4
0.5 - 5
2 - 20
10 - 100
4 - 40
16 - 160
80 - 800
20 - 200
80 - 800
400 - 4000
100
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